André W. Droxler

Professor
Professor of Earth Science

portrait of Dr. André Droxler
  • M.S. University of Neuchatel, Switzerland, 1978
  • Ph.D. University of Miami, 1984
  • Carbonate Sedimentology with emphasis on periplatform carbonate ooze; Paleoceanography and paleoclimatology of the Neogene; Shallow carbonate platforms and deep adjacent environments, evolution, and processes
  • Center for the Study of the Environment and Society

E-mail: andre@rice.edu
Phone: (713) 348-4885
Office: 203B Keith-Wiess Geology Labs

Research Statement

My past and current research programs involve detailed studies of carbonate periplatform sedimentary records and environments. Areas where research has been and is conducted include the Nicaragua Rise and Belize (Caribbean Sea), the Gulf of Mexico, the Bahamas (Northwestern Atlantic Ocean), the Maldives (equatorial Indian Ocean), and the Queensland Plateau/Great Barrier Reef (Southwest Pacific Ocean).

My current students and I are involved in comparative research programs of Holocene, Pleistocene, and Neogene sediments deposited in deep environments surrounding shallow carbonate platforms. We are focusing our studies on:

(1) processes related to recent carbonate sedimentation and

(2) the understanding of variations through time of carbonate mineralogy, micropaleontology and geochemistry in periplatform sediments with direct global and regional implications with respect to paleoceanography, paleoclimatology, and paleoecology.

Another objective of our research is to better understand the Cenozoic, especially Neogene, evolution of modern carbonate platforms by means of bathymetric and high resolution seismic surveys, coring and dredging, as well as drilling. In the past ten years, I have been directly involved with the Ocean Drilling Program (ODP) and have participated as sedimentologist at four ODP Legs, Leg 101 in the Bahamas (1985), Leg 115 in the Maldives (1987), Leg 133 in Northeast Australia (1990), and Leg 165 in the Caribbean (1996). With my current graduate students, I am working on:

The transition from a passive to an active margin is of great geological significance and interest. During this transition, local tectonics and therefore basin subsidence rates and relative sea level fluctuations are modified, and, as a consequence, the origin and the distribution pattern of sediments become altered. Northwestern Venezuela exemplifies such a scenario whereby its Cretaceous passive margin was disturbed and modified by the collision of the Caribbean and South American plates beginning in the Late Cretaceous and peaking in the Paleocene-Eocene time frame. The geological evolution of the Lake Maracaibo region was subsequently modified from a passive to an active continental margin. Therefore, I propose for my Masters? research to integrate structural, sedimentological, and geophysical data in order to enhance our understanding of the transitional evolution of Lake Maracaico region from a passive to an active continental margin.

Initially, I am proposing to carry out a thorough structural interpretation using the 242 km2 of a 3D seismic cube from La Concepciun field in the Maracaibo basin of northwest Venezuela. Then, based on complete well log suites of about 10 wells and possibly cutting samples, I am proposing to develop a sequence stratigraphic framework for the Tertiary section, with a particular focus on the Paleocene mixed siliciclastic-carbonate of the Guasare Formation. I am proposing to establish the stacking patterns of individual sedimentary bodies and compare those pattern with the lateral and vertical distribution of the Guasare Fm. seismic facies. The ultimate goal of my proposed study will be to establish the relationship(s) between the sedimentology and the petrophysical characterization of the rocks to develop some reservoir characterization of the Guasare Fm. and place them in the context of the transitional evolution of Lake Maracaico region from a passive to an active continental margin.

This proposal, related to oil recovery from the ?La Concepcion? oil field has distinct objectives: the analyses of the carbonates deposits of the Cogollo Group (Mid Cretaceous) This objective will enhance the recovery of known but undeveloped oil and gas reserves from the Cogollo Group. The proposed research will focus on establishing the sequence stratigraphy framework in the available 3D seismic data sets to study the stacking of the sedimentary bodies and the lateral and vertical distribution of the seismic facies. The proposed research will focus on establishing the sequence stratigraphy framework in the available 3D seismic data sets to study the stacking of the sedimentary bodies and the lateral and vertical distribution of the seismic facies. The research will also focus on in relationship between the sedimentology and the petrophysical characterization of the rocks and the oil production potential

Some of the gas reservoirs in the northern Andaman Sea consist of isolated carbonate platforms developed on a volcanic high, in the Gulf of Martaban). The Indian plate is plunging below the Eurasian plate and the Gulf of Martaban is a back-arc basin. The commercial hydrocarbon reservoirs are developed above the volcanic arc. The seismic data available show two main carbonate episodes (Upper and Lower Burman, Limestone ) with an intermediate regional transgressive event, very similar to the broad sketch of the Maldives. Carbonates were finally drowned and covered by siliciclastics during Mid-Miocene time. For the Yadana structure, the Upper Burman limestone was studied in detail for economic reasons. Five wells partly cored by MOGE and four cored wells by Total Myanmar were studied. Two field excursions onshore Myanmar tried to ty a coeval analogue but failed to prove similar environments. The Maldives model was compared to the Yadana data and used to describe and to understand the general sedimentological model of the field. The quality of the Myanmar data and the results obtained from the Maldives data by A. Droxler and his PhD. students indicate that a detailed review of all the available seismic is required. This review should encompass the entire interval from the basement to the seal. It will provide a better understanding of the Oligocene/Miocene sea-level fluctuations, in the Yadana area calibrated to the sequence stratigraphy scheme developed in the Maldives. Then this general knowledge will be applied for the exploration program within the Tertiary interval from the Indian Ocean to the South China Sea. Particularly, this calibrated interpretation would be applied to scattered seismic data from the West Coast of India and the Pakistan.

Although numerous studies have examined carbonate preservation and dissolution in pelagic sediments greater than 2500 m water depth, there have been very few studies about such processes at intermediate water depths (500-2500 m). We are establishing high-resolution paleoceanographic records of Quaternary sediments recovered from ODP Leg 165 Sites 999 and 1000 in the Caribbean Sea to determine long-term variations in carbonate sediment preservation and to investigate the relationships between carbonate preservation/dissolution and intermediate water circulation. The Caribbean basin affords a unique opportunity to investigate these relationships because it plays an important role in global ocean circulation and because western Atlantic waters filling the basin are intermediate in origin, restricted by an 1800 m maximum sill depth. The ultimate objective of this research project is to examine these carbonate preservation records to determine if there are any long-term cyclical patterns. Bassinot, et al. (1994) and Yatsuda, et al. (1993) proposed an oscillation in Quaternary carbonate preservation and dissolution in the Indian and Pacific Oceans with a periodicity of 425-550 kyr. The mechanism(s) for such an oscillation are still conjectural and difficult to constrain. The high-resolution records from ODP Sites 999 and 1000 will determine if a similar pattern is observed in the Caribbean Sea.

The middle to late Miocene has been regarded as a time of extensive ice-sheet growth (Serravallian, 14.8-11.2 Ma) followed by a period of ice-sheet stability (Tortonian, 11.2-7.1 Ma). Sea level curves created using sequence stratigraphy along with oxygen isotope records serving as ice volume proxies have been the main evidence for this. Paired Mg/Ca and delta-18O measurements of benthic foraminifera present an alternative method for determining ice volumes. This method derives paleotemperatures using Mg/Ca temperature calibrations for calcite. The calculated paleotemperatures can be used to correct oxygen isotope records for temperature effects. The result is a record that should be solely dependent upon ice volume. If deep-water temperatures and ice-sheet growth/decay vary with one another, then the temperature and ice volume curves produced using paired Mg/Ca and delta 18-O measurements should be parallel. This study proposes to produce ice volume and deep-sea temperature curves for a period covering ~13-9.5 Ma (late Serravallian to mid Tortonian) using paired Mg/Ca and delta-18O measurements of benthic foraminifera from the equatorial Indian Ocean. The benthic foraminifera will be taken from cores of the Ocean Drilling Program (ODP) site 714A (2042 meters water depth) near the Maldives. A previous study done by Billups and Schrag (2001) has produced ice volume and deep-sea temperature curves for the Miocene using paired Mg/Ca and ?O18O measurements of benthic foraminifera from the Kerguelen Plateau in the Southern Ocean. They found discrepancies between deep-sea temperatures and ice volume during the Serravallian-Tortonian transition (~11.2 Ma) and the late Tortonian (~8.5 Ma). Deep-sea temperatures on the Kerguelen Plateau actually rose during periods of Antarctic ice-sheet expansion. The result was that the ice volume curve showed more extensive glaciations at ~11.2 and ~8.5 Ma than is seen in oxygen isotope records. We hypothesize that our ice volume and deep-sea temperature curves will have discrepancies similar to those seen by Billups and Schrag (2001). If this is the case, then the results found by those authors will be shown to be global in nature, and not simply a consequence of a anomalous regional water mass. Some evidence for major sea level regressions during the middle to late Miocene already exists at the Maldives from seismic sequence stratigraphy and planktonic oxygen isotope records. We believe that the more robust ice volume determinant of paired Mg/Ca and delta 18O measurements will verify these regressions as major glacial events. In conclusion, the proposed study has these aims: 1) Produce ice volume and deep-sea temperature curves for parts of the mid/late Miocene (~13-9.5 Ma). 2) Verify the applicability of paired Mg/Ca and delta 18O measurements to determine ice volume in the Neogene. 3) Determine the stability of the mid/late Miocene ice-sheet.

During a late June 2002 transit from Panama to Cancun on the R/V Marion Dufresne, a spectacular 37.6 m-long piston core MD02-2532 was retrieved from a water depth of 333 m at 3 km in front of the central Belize Barrier Reef. The core penetrated the distal part of a seismic wedge, made up of five distinctive subunits, and the upper part of an underlying seismic unit characterized by sub-parallel seismic reflectors. The age of the oldest sediment at the bottom of the core ranges, based upon nannofossil assemblage, between 720 and 450 kyr. Moreover, nannostratigraphy analyses at 1.5 m sample intervals yield three nannofossil age markers, LAD of Pseudoemiliania lacunosa, FAD and the Acme zone of Emiliania huxleyi were identified between 22.5-24.0 m, 12.0-10.5 m, and 4.5-3.0 m, respectively. Early interpretation of shipboard color reflectance and magnetic susceptibility data sets, in addition to visual core description and smear slide observations, seem to identify in the upper 24 m of the core five distinct light subunits characterized by low magnetic susceptibility separated by four darker subunits characterized by high magnetic susceptibility. In contrast the lower 13 m of the core are characterized by calcareous oozes rich in angular quartz and lithogenic grains, and a magnetic susceptibility signature clearly distinct from the upper 24 m of the core. The five subunits in the upper 24 m of the core are interpreted to consist of distal barrier reef deposits and correspond to late Quaternary interglacial marine isotope stages 11, 9, 7, 5, and 1. Those five subunits overlie an early Brunhes mixed siliciclastic-carbonate unit representing a deep open continental shelf.

Future research on MD02-2532 will the a suite of analyses, including carbonate content and mineralogy, planktic oxygen and carbon stable isotopes, Mg/Ca ratio for sea surface water paleo-temperature estimates from planktic foraminifers, and macro and micro fauna identification, establishment of integrated stratigraphy based on oxygen isotope-stratigraphy, nannostratigraphy and foraminifers stratigraphy.

This research program on the origin of the Belize Barrier Reef has far reaching global implication. The establishment of the Australian Great Barrier Reef was recently dated to be Brunhes in age and was given an age of 600 +/- 280 ka. Moreover the coralgal Key Largo limestone overlying quartz-rich early Pleistocene shelf deposits in the Florida Keys was estimated to late Pleistocene age. The initial analyses of core MD02-2532 associated with results of earlier research along the Belize margin point out, therefore, that, as for other modern barrier reefs offshore Northeast Australia, and South Florida, the Belize Barrier Reef represents young (late Pleistocene) and thin carbonate sedimentary deposits covering a series of late Pliocene and early Pleistocene lowstand prograding siliciclastic paleo coastlines (deltas and possibly beach ridges). According to our model, these extraordinary findings can be explained by two unique, global, and systematic floodings of early Pleistocene lowstand tropical paleo fluvial plains during the onset of interglacial marine isotope stages 11 and 9. These two exceptionally high amplitude (more than 100 m) sea level transgressions are the first such transgressions since the onset of the main northern Hemisphere glaciations 2.8 Ma. Moreover, those mid-Brunhes high amplitude sea level transgressions and high-sea-level intervals dramatically contrast with the late Pliocene and early Pleistocene overall lowering of the marine base level tied to the establishment and the expansion of the northern hemisphere major continental ice sheets.

Southern and Baker Banks are currently drowned coralgal reefs about 40 to 50 m-thick on the edge of the South Texas Shelf 55 km offshore Corpus Christi. They are interpreted to have grown during the first half of last sea level transgression on top of topographic highs occurring along a Last Glacial Maximum lowstand siliciclastic paleo coastline. Contemporaneous and similar coral reef establishment, growth, and demise have been reported along the Mississippi-Alabama shelf margin. We are proposing to drill and analyze nine 60 to 100 m - deep boreholes along the edge of the South Texas and Mississippi-Alabama continental shelves. Although this drilling proposal is submitted based upon its sole scientific merit, this drilling program should be also considered as an exemplary scientific drilling activity in shallow water conditions to promote alternate drilling platform as being a full part of IODP. This drilling program could also be used as a feasibility test in using the highly maneuverable, 190-ft-long R/V Seaprobe I of Fugro-McClelland as an alternate drilling platform to drill coralgal edifices in water depths shallower than 120 m.

The detailed description of the different lithologies and depositional environments, the borehole logs, the geochemical analyses, and U/Th and 14C AMS dating of these nine cored sedimentary sequences will allow us to develop the following objectives:

(a) The drilled material will shed some new light on the enigmatic findings that coralgal edifices flourished on the edge of the South Texas and Mississippi-Alabama shelves during the first part of last deglaciation, an interval of time when conditions of sea surface temperature were and sea surface salinity were expected to be lower in the Gulf of Mexico, and rates of eustatic sea-level rise much faster than they are today;

(b) The drilled material will improve the resolution of the last deglacial sea-level history from late Glacial to the Younger Dryas, including the interval of the melt-water pulse 1A, from a passive margin environment less influenced by discontinuous tectonic activity as in the offshore Barbados,

(c) The drilled material will help us to better understand the sedimentary and biological processes involved with the origin (initial establishment), growth, and demise of carbonate reef tracts along the edge of siliciclastic shelves.

(d) The latest Pleistocene transgressive coralgal reefs on the edge of the South Texas Shelf can be studied as recent analogs for reefal reservoirs buried in siliciclastic shelves.

The Maldive Archipelago, an intra-oceanic tectonically relatively undisturbed carbonate system in the Central Indian Ocean, contrasts with the Bahamas and the Northeast Australia modern shallow-water tropical carbonate established along passive continental margins. The physiography of the Maldives stands out by its very large dimensions (over 800 km in length and 130 km in width) and its unique double chain of atolls separated by the shallow Maldive Inner Sea, a central basin not exceeding 600 m in water depth. Due to its location on a rigid part of the Indian Plate, minimum synsedimentary tectonic activity has been observed in the Maldive carbonate system since the Oligocene. In this proposal (No 514-Full3), we propose to drill an array of seven sites (MLA-1 to MLA-7) along a 21 km-long segment of a Shell SM89-E130 MCS line. This line is part of a dense (line spacing ranging from 2 to 4.5 km) 1989 2D grid (6000 km of seismic lines), acquired by Royal Dutch Shell in 1989 in the Maldive Inner Sea. This seismic grid is groundtruthed by ARI-1, a 3365 m-deep well that penetrated the entire Inner Sea sedimentary package. This comprehensive industrial MCS grid and ARI-1 well form an invaluable and unique data set to identify the Oligocene/Miocene sedimentary sequences and interpret their geometries, lateral variations, and vertical shifts, in a sequence stratigraphic framework. The site transect is proposed to be drilled across a seismically well imaged late Oligocene backstepping carbonate platform margin which evolved, after being almost completely drowned in the early Miocene, into a well-developed middle Miocene prograding platform margin. This drilling proposal will greatly help to compare and contrast existing high resolution benthic Oligocene-Miocene open marine ?O18O records, the best available sea level proxies, with the timing, amplitudes, and, therefore, rates of late Oligocene and Miocene eustatic sea level fluctuations established in a sequence stratigraphic framework. This proposal offers the unique opportunity to test the existence of the major !?30 Ma!? sea level fall of the Haq et al. (1987) eustatic chart at the early/late Oligocene boundary in nannofossils zone NP 24 and the subsequent dramatic sea level transgression in the late Oligocene and early Miocene. Moreover, the proposal will tie existing high resolution benthic Miocene delta18O records with 3th-to-4th-order prograding sedimentary sequences in order to define the timing and amplitude of the middle Miocene sea level fluctuations, a time interval characterized by a systematic growth of the Antarctic ice sheet.

Publications

Andresen, N., Reijmer, J.J.G., and Droxler, A.W. "Timing and Distribution of Calci-turbidites around a Deeply Submerged and Seismically Active Carbonate Platform (Pedro Bank, Northern Nicaragua Rise, Caribbean Sea)." International Journal of Earth Science (Geol. Rundschau) (in review).

A. W. Droxler (1), A. Belopolsky (2), and G. Camoin "Mid Brunhes origin of modern atolls: a model developed in the Maldives and Moruroa atolls." Geophysical Research Abstracts, 7 (Vienna, Austria): 10414.

Kameo, K., Shearer, M.C., Droxler, A.W., Mita., L., Watanabe, R., and Sato., T. "Glacial-interglacial surface water variations in the Caribbean Sea during the last 300 ky based on calcareous nannofossil analysis." Palaeogeography, Palaeoclimatology, Palaeoecology, 212, Is. 1-2 (Sept 2004): 65-76.

Andre W. Droxler and Belopolsky, A.V. "Maldives Miocene carbonate sequence stratigraphy pattern and oxyen isotope records as sea level proxy." Abstract Book (Postdam, Germany).

Brooke Olson, Andre Droxler, Gerald Dickens, and Luc Beaufort "Controls on Carbonate Platform and Reef Development II." Technical Program Abstract Book (June 19-22, 2005).

Gianni Mallarino, Andre W. Droxler, and Richard Fitton. "Timing of Turbidite Input and Late Quaternary Sea Level: Comparison Between Siliciclastic (Western Gulf of Mexico), Carbonate (Northern Nicaragua Rise), and Mixed Carbonate-Siliciclastic (Pandora Trough, Coral Sea) Systems High-Resolution Stratigraphy of Deep-Water Deposits I." AAPG Annual Convention Technical Program Abstract Book June 19-22, 2005.

Dipanjan Mitra, Andre W. Droxler, Philippe Lapointe, and Arthur H. Saller ". Late Oligocene and Early Miocene Evolution of the Carbonate System in the Gulf of Martaban (Northern Andaman Sea): Comparison with the Maldives. Controls on Carbonate Platform and Reef Development II." Technical Program (June 19-22, 2005).

B.E. Carson, J.M. Francis, R.M. Leckie, A.W. Droxler, G.R. Dickens, S.J. Jorry, S.J. Bentley, L.C. Peterson, B.N. Opdyke "Benthic foraminiferal response to sea level change in the mixed siliciclastic-carbonate system of southern Ashmore Trough (Gulf of Papua)." Journal of Geophysical Research-Earth Surface (2008).(In Press)

B.E. Carson, J.M. Francis, R.M. Leckie, A.W. Droxler, G.R. Dickens, S.J. Jorry, S.J. Bentley, L.C. Peterson, B.N. Opdyke "Benthic foraminiferal response to sea level change in the mixed siliciclastic-carbonate system of southern Ashmore Trough (Gulf of Papua)." Journal of Geophysical Research-Earth Surface (2008).

S.J. Jorry, A.W. Droxler, G. Mallarino, G.R. Dickens, S.J. Bentley, L. Beaufort, L.C. Peterson, B.N. Opdyke "Bundled turbidite deposition in the central Pandora Trough (Gulf of Papua) since Last Glacial Maximum: linking sediment nature and accumulation to sea-level fluctuations at millennial time-scale." Journal of Geophysical Research-Earth Surface (2008).

S.J. Jorry, A.W. Droxler, G. Mallarino, G.R. Dickens, S.J. Bentley, L. Beaufort, L.C. Peterson, B.N. Opdyke "Bundled turbidite deposition in the central Pandora Trough (Gulf of Papua) since Last Glacial Maximum: linking sediment nature and accumulation to sea-level fluctuations at millennial time-scale." Journal of Geophysical Research-Earth Surface (2008).

Tcherepanov, E. N., A. W. Droxler, P. Lapointe, and K. Mohn, Carbonate seismic stratigraphy of the Gulf of Papua mixed depositional system: Neogene stratigraphic signature and eustatic controlstratigraphic signature and eustatic, Basin Research, 20 Issue 2, Pages 185 - 209, Blackwell Publishing

J.M. Francis, J. Daniell, A.W. Droxler, G.R. Dickens, S.J. Bentley, L.C. Peterson, B.N. Opdyke, L. Beaufort "Deep-water geomorphology of the mixed siliciclastic-carbonate system, Gulf of Papua." Journal of Geophysical Research-Earth Surface (2008).(In Press)

J.M. Francis, J. Daniell, A.W. Droxler, G.R. Dickens, S.J. Bentley, L.C. Peterson, B.N. Opdyke, L. Beaufort "Deep-water geomorphology of the mixed siliciclastic-carbonate system, Gulf of Papua." Journal of Geophysical Research-Earth Surface (2008).

Fulthorpe, C. S., K. G. Miller, A. Droxler, S. Hesselbo, G. Camoin, and M. Kominz, Drilling to decipher long-term sea-level changes and effects, 2008, Scientific Drilling, No.6, p. 19-28

Z. Muhammad, S.J. Bentley, L.A. Febo, A.W. Droxler, G.R. Dickens, L.C. Peterson, B.N. Opdyke "Excess 210Pb inventories and fluxes along the continental slope and basins of the Gulf of Papua." Journal of Geophysical Research-Earth Surface (2008).(In Press)

Z. Muhammad, S.J. Bentley, L.A. Febo, A.W. Droxler, G.R. Dickens, L.C. Peterson, B.N. Opdyke "Excess 210Pb inventories and fluxes along the continental slope and basins of the Gulf of Papua." Journal of Geophysical Research-Earth Surface (2008).

L.A. Febo, S.J. Bentley, J.H. Wrenn, A.W. Droxler, G.R. Dickens, L.C. Peterson, B.N. Opdyke "Late Pleistocene and Holocene sedimentation, organic-carbon delivery, and paleoclimatic inferences on the continental slope of the northern Pandora Trough, Gulf of Papua." Journal of Geophysical Research-Earth Surface (2008).(In Press)

L.A. Febo, S.J. Bentley, J.H. Wrenn, A.W. Droxler, G.R. Dickens, L.C. Peterson, B.N. Opdyke "Late Pleistocene and Holocene sedimentation, organic-carbon delivery, and paleoclimatic inferences on the continental slope of the northern Pandora Trough, Gulf of Papua." Journal of Geophysical Research-Earth Surface (2008).

E.N. Tcherepanov, A.W. Droxler, P. Lapointe, G.R. Dickens, S.J. Bentley, L. Beaufort, L.C. Peterson, J. Daniell, B.N. Opdyke "Neogene evolution of the mixed carbonate-siliciclastic system in the Gulf of Papua, Papua New Guinea." Journal of Geophysical Research-Earth Surface (2008).(In Press)

E.N. Tcherepanov, A.W. Droxler, P. Lapointe, G.R. Dickens, S.J. Bentley, L. Beaufort, L.C. Peterson, J. Daniell, B.N. Opdyke "Neogene evolution of the mixed carbonate-siliciclastic system in the Gulf of Papua, Papua New Guinea." Journal of Geophysical Research-Earth Surface (2008).

Camoin, G., A. Droxler, K. G. Miller, and C. S. Fulthorpe, Quaternary sea-level changes: Records and processes, Global and Planetary Change, 2008

A.W. Droxler and Carson, B.E. "Contemporaneous Re-flooding Recorded on the Slopes of Great Bahama Bank and Central Belize Barrier Reef ." (2007).

A.W. Droxler, G. R. Dickens, J. M. Francis, B. E. Carson, S.J. Jorry, G.Malarino, L. Beaufort, and B. Opdyke "Late Quaternary Sediment Delivery to Offshore Shelf Edges, Slopes, and Basins, in the Gulf of Papua: Testing the Basic Principles of Sequence Stratigraphy during the last glacial-interglacial sea level cycle ." (2007).

Jorry SJ, Droxler AW, Beaufort L, Dickens GR, and Bentley SJ, "Late Quaternary sediment delivery in Ashmore and Pandora Trough (Gulf of Papua): testing principles of sequence stratigraphy." Marine Geology (2007).(Submitted)

Francis, J.M., Daniell, J.,Droxler A.W., Dickens, G.R., Bentley, S. "Mass Transport on the Gulf of Papua Continental Slope: Physiographic Controls on Deposition ." (2007).

B.E. Carson and A.W. Droxler "Mid-Brunhes First High Amplitude Transgression (s): Platform Top and Shelf Contemporaneous Re-flooding Recorded on the Slopes of Great Bahama Bank and Central Belize Barrier Reef ." (2007).

Droxler, A.W. "Past Earth Climate Change in the Context of Current and Future Global Warming." (2007).

Pirmez, C, Prather, B E., Droxler, A.W., O'Hayer, W "Sediment Flux from Source to Sink in the Brazos-Trinity Depositional System." (2007).

Francis, J.M., Dunbar, G.B., Dickens, G.R., Sutherland, I.A., and Droxler, A.W. "Siliciclatic sediment across the North Queensland Margin (Australia): A Holocene perspective on reciprocal versus coeval deposition in tropical mixed siliciclastic carbonate systems." Journal of Sedimentary Research, v. 77 (2007): 572-586.

Pohlman E, Droxler AW, Jorry SJ (2006) Occurrence, frequency, and nature of calci-turbidites in the Northeast Nicaragua Rise: Testing the highstand shedding model for the last four 100 ky interglacial-glacial cycles. American Geophysical Union, Joint Assembly, 23-26 May 2006, Baltimore, USA

Droxler AW, Dickens GR, Francis J, Olson B, Mallarino G, Jorry SJ, Bentley SJ, Febo L, Muhammad Z, Patterson L, Peterson LC, McFadden M, Opdyke B, Beaufort L "Variable mixed carbonate-siliciclastic sedimentary sinks during last sea level cycle in Ashmore, Pandora, and Moresby Troughs, and on Eastern Plateau (Gulf of Papua)." Conference Proceedings (2006).

Upper most Pleistocene and Early Transgressive Relict Barrier Reefs on LGM Coastal Siliciclastic Deposits (Gulf of Papua) Author(s) Name: André Droxler1, Gianni Mallarino2, Jason M. Francis1, Bradley Opdyke3, Luc Beaufort4, James Daniell5, Samuel Bentley6, Jerry Dickens1, and Larry Peterson7

Bradford E. Prather, Carlos Pirmez, Ciaran J. O'Byrne, Charles Winker, Ggianni Mallarino, Andre W. Droxler, Peter Flemings, Jan Behrmann, Cedric John, and IODP Expedition 308 Shipboard Scientific Party "Stratigraphic Evolution of Linked Basins within the Brazos-Trinity Slope System: Western Gulf of Mexico." (2006).

Francis, J. M., G. B. Dunbar, G. R. Dickens, I. A. Sutherland, and A. W. Droxler "Siliciclastic sediment across the North Queensland Margin (Australia): A Holocene perspective on reciprocal versus coeval deposition in tropical mixed siliciclastic-carbonate systems." Journal of Sedimentary Research (2006).(In Press)

Dickens, Gerald R. , Andre W. Droxler, Samuel J. Bentley, Larry C. Peterson,Bradley N. Opdyke, Luc Beaufort, James Daniell, Lawrence A. Febo, Jason Francis, Peter T. Harris, Stephan Jorry, Gianni Mallarino, Melany McFadden, Zahid Muhammad, Brooke Carson, Luke Patterson, Eugene Tcherepanov and Carlos A. Zarikian "Sediment accumulation on the shelf edges, adjacent slopes, and basin floors of the Gulf of Papua: A preliminary late Quaternary view of sedimentary sinks in the Papua New Guinea Source-to-Sink focus area." Margins, Newsletter,, No 16 (2006): 1-5, 38.

Muhammad, Zahid , Samuel Bentley, Andre Droxler, Gerald Dickens, Bradley Opdyke, and Larry Peterson "Sediment Flux to the Gulf of Papua Continental Slope Using Pb-210 Geochronology, Source to Sink Papua New Guinea Focus Area." (2006).

Mallarino, Gianni , Rick T. Beaubouef, Andre W. Droxler, Vitor Abreu, and Laurent Labeyrie "Sea level influence on the nature and timing of a minibasin sedimentary fill (northwestern slope of the Gulf of Mexico) ." AAPG Bulletin, 90 (2006): 1089-1119.

Opdyke, Bradley, Gianni Mallarino, Jason M Francis, Andre Droxler, Samuel Bentley, "A spectacular core yields important clues to the transgressive origin of barrier reefs on top of lowstand linear beach ridges in mixed carbonate-siliciclastic systems." (2006).

Olson, B., A.W. Droxler, G.R. Dickens, L. Beaufort "Brunhes evolution of the Belize mixed siliciclastic-carbonate margin: Sedimentary processes and MAR variations linked to glacial-interglacial sea level fluctuations." Abstract Book, Publ., 55 (2006): 143-144.

Jorry SJ, Mallarino G, Droxler AW, Beaufort L, Dickens GR, Bentley SJ, Peterson LC "Bundled turbidite deposition in the Central Pandora Trough (Gulf of Papua) during last glacial-interglacial cycle: a potential link to millennial time scale climatic variations and sea level fluctuations." (2006).

Jorry SJ, Mallarino G, Droxler AW, Beaufort L, Dickens GR, Bentley SJ, Peterson LC "Bundled turbidite deposition in the Central Pandora Trough (Gulf of Papua) during last glacial-interglacial cycle: a potential link to millennial time scale climatic variations and sea level fluctuations." (2006).

Jorry SJ, Droxler AW, Mallarino G, Dickens GR, Bentley SJ, Beaufort L, Peterson, LC, Opdyke, BN "Bundled turbidite deposition in the Central Pandora Trough (Gulf of Papua) since Last Glacial Maximum: Linking sediment nature and accumulation to sea-level fluctuations at millennial time scale." Journal of Geophysical Research (2006).(In Revision)

Francis, J. M., J. Daniell, A. W. Droxler, G. R. Dickens, S. J. Bentley, L. C. Peterson, B. N. Opdyke, and L. Beaufort "Deepwater geomorphology and sediment pathways of the mixed siliciclastic-carbonate system, Gulf of Papua." Journal of Geophysical Research (2006).(Submitted)

Droxler, Andre, Gianni Mallarino, Jason M. Francis, Jerry Dickens, Luc Beaufort, Samuel Bentley, Larry Peterson, and Bradley Opdyke "Early Part of Last Deglaciation: A Short Interval Favorable for the Building of Coralgal Edifices on the Edges of Modern Siliciclastic Shelves (Gulf of Papua and Gulf of Mexico)." (2006).

André Droxler, Gianni Mallarino, Jason M. Francis, Jerry Dickens, Bradley Opdyke, Luc Beaufort, James Daniell, Samuel Bentley, and Larry Peterson "Early Transgressive Establishment of Relict Upper most Pleistocene Barrier Reefs on LGM Coastal Siliciclastic Deposits in the Gulf of Papua: Clue to Understand the Mid Brunhes Global Origin of Modern Barrier Reefs." (2006).

Droxler, A. W., G. Mallarino, J.M. Francis, G. J. Dickens, B. N. Opdyke, L. Beaufort, J. Daniell, S. J. Bentley, and L. C. Peterson, "Early Transgressive Establishment of Relict Uppermost PLeistocene Barrier Reefs on LGM Coastal Siliciclastic Deposits in the Gulfd of Papua and Mexico: Clue to Understand the Mid-Brunhes Origin of Modern Barrier Reefs." Abstract book, Publ., 55 (2006): 37-38.

Muhammad, Zahid, S.J. Bentley, L.A. Febo, A.W. Droxler, G.R. Dickens, B.N. Opdyke, and L.C. Peterson "Excess 210Pb inventories and fluxes along the continental slope and basins of the Gulf of Papua." (2006).

Muhammad, Zahid, S.J. Bentley, L.A. Febo, A.W. Droxler, G.R. Dickens, B.N. Opdyke, and L.C. Peterson "Excess 210Pb inventories and fluxes along the continental slope and basins of the Gulf of Papua." Journal of Geophysical Research-Earth Surface (2006).(Submitted)

Carson, B, R. M. Leckie, J.M. Francis, A.W. Droxler, G.R. Dickens, S. Bentley, L. "Foraminiferal populations of the southern Ashmore Trough (Gulf of Papua) mixed siliciclastic-carbonate system over the past 85 kyrs." Journal of Geophysical Research (2006).(Submitted)

Francis, J. M., B. Olson, G. R. Dickens, A. W. Droxler, L. Beaufort, T. de Garidel-Thoron, S. Bentley, L. Peterson, and B. Opdyke "High Siliciclastic Flux During the Last Sea Level Transgression, Ashmore Trough, Gulf of Papua." (2006).

McFadden, Melany A., Larry C. Peterson, Samuel J. Bentley, Gerald Dickens, Andre Droxler, and Bradley Opdyke "Role of Paleoclimate and Paleoceanography in Sediment Delivery to the Gulf of Papua over the Last ~300kyrs Based on Foraminiferal and Organic Matter Stable Isotope Records ." (2006).

Tcherepanov, E. N. , and A. W. Droxler "Role of Neogene Sea-Level Changes in the Evolution of the Mixed Carbonate-Siliciclastic System in the Gulf of Papua." Abstract book, Publ., 55 (2006): 185-186.

Febo, Lawrence A. , Samuel J. Bentley, Gerald R. Dickens, André W. Droxler, Larry C. Peterson, and Bradley N. Opdyke "Recent-to-Late Pleistocene Sedimentary Organic Matter in the Gulf of Papua, Papua New Guinea ." (2006).

Jorry SJ, Droxler AW, and Pohlman E "Re-Flooding of Carbonate Bank-Tops: Timing and Processes during the Late Quaternary." Geology (2006).(Submitted)

Patterson, Luke J., Samuel J. Bentley, Darrell Henry, Gerald R. Dickens, Andre W. Droxler, Larry C. Peterson, and Bradley N. Opdyke "Petrological and Geochemical Investigations of Deep Sea Turbidite Sands in the Pandora and Moresby Troughs, Source to Sink Papua New Guinea Focus Area." (2006).

Tcherepanov, E. N. , A. W. Droxler, G. R. Dickens, S. J. Bentley, L. C. Peterson, and L. Beaufort "Neogene Sources and Sinks of Carbonates and Siliciclastics in the Gulf of Papua, Papua New Guinea." (2006).

Tcherepanov, E. N. , A. W. Droxler, G. R. Dickens, S. J. Bentley, L. Beaufort, L. C. Peterson, J. Daniell, and B. N. Opdyke "Neogene Evolution of the Mixed Carbonate-Siliciclastic System in the Gulf of Papua, Papua New Guinea." Journal of Geophysical Research-Earth Surface (2006).(Submitted)

Jorry SJ, Mallarino G, Droxler AW, Beaufort L, Dickens GR, Bentley SJ, and Peterson LC "Nature, timing, and frequency of gravity flow deposition linked to millennial time scale sea level/climate fluctuations during last glacial/interglacial cycle: an example from the Central Pandora Trough (Gulf of Papua)." Abstract Book, Publ., 55 (2006): 98-99.

Luke J. Patterson, Samuel J. Bentley, Darrell J. Henry, André Droxler, Gerald Dickens, Brad Opdyke, Larry Peterson "Multiple source areas for turbidite sands reaching deep basins in the Gulf of Papua." Journal of Geophysical Research-Earth Surface. (2006).(Submitted)

Jorry SJ, Droxler AW, Mallarino G, Dickens GR, Bentley SJ, Beaufort L, Peterson, LC, Opdyke, BN "Linking Sediment Nature and Accumulation to Millennial Scale Sea-Level Fluctuations." Nature (2006).(Submitted)

McFadden, M A, Peterson, L C, Bentley, S, Dickens, G, Droxler, A , and Opdyke, B "Late Quaternary Variations in Carbonate and Siliciclastic Sedimentation From the Gulf of Papua New Guinea Based on Elemental Records." (2006).

Febo, Lawrence A. , Samuel J. Bentley, John H. Wrenn, André W. Droxler, Gerald R. Dickens, Larry C. Peterson, and Bradley N. Opdyke "Late Pleistocene to Recent Sedimentation, Organic Carbon Delivery, and Paleoclimatic Inferences in the Mid Slopes of the Northern Pandora Trough, Gulf of Papua." Journal of Geophysical Research-Earth Surface. (2006).(Submitted)

Francis, J. M., B. Olson, A. W. Droxler, G. R. Dickens, T. de Garidel-Thoron, L. Beaufort, S. Bentley, L. Peterson, B. Opdyke "High siliciclastic flux in response to sea level fluctuations and climate change on a mixed carbonate-siliciclastic margin, Ashmore Trough, Gulf of Papua." Abstract Book, Publ., 55 (2006): 51-53.

Maria Mutti, Andre Droxler and Andy Cunnigham "Oligo-Miocene Evolution of the Nicaraguan Rise: constraints on drowning mechanisms." (2005).(In Press)

Belopolsky, A.V. and Droxler, A.W. "Seismic Expressions of Prograding Carbonate Bank Margins: Middle Miocene Progradation in the Maldives, Indian Ocean." Atlas on Seismic Carbonate Reservoirs, AAPG Memoir 81 (2004): 267-290.

Belopolsky, Andrei V. and Droxler, Andre W "Seismic Expressions and Interpretation of Carbonate Sequences: The Maldives Platform, Equatorial Indian Ocean." Atlas on Seismic Carbonate Reservoirs (2004): 46 pgs.

Joy M. Roth, Andre W. Droxler, Koji Kameo "The Caribbean Carbonate Crash at the middle to late Miocene transition: Linkage to the establishment of the modern global ocean conveyor." Proceeding of the Ocean Drilling Program, Scientific Results: College Station, TX (Ocean Drilling Program), 165 (2000): 249-273.

Andrew D. Cunningham, Andre W. Droxler "Synthetic seismogram generation and seismic facies to core lithology correlation for ODP Sites 998, 1000 and 1001." Proceeding of the Ocean Drilling Program, Scientific Results: College Station, TX (Ocean Drilling Program), 165 (2000): 205-217.

Droxler, A.W. and Farrell, J.W. "Marine Isotope Stage 11 (MIS 11):new insights for a warm future ." Global and Planetary Change, 24/1 (2000): 1-5.

Droxler, A.W. and Farrell, J.W. eds. "A Special Issue of Marine Isotope Stage 11 (MIS 11):new insights for a warm future. Special Issue." Global and Planetary Change, 24/1 (2000): 1-78.

Andre W. Droxler, Richard Poore, Llyod Burckle "Data on Past Climate Warmth May Lead to Better Model of Warm Future." Eos, Transactions, American Geophysical Union, 80, 26 (1999): 289-290.

Andrei V. Belopolsky, Andre W. Droxler "Uppermost Pleistocene Transgressive Coralgal Reefs on the Edge of the South Texas Shelf: Analogs for Reefal Reservoirs Buried in Siliciclastic Shelves." GCSEPM Foundation 19th Annual Research Conference Advanced Reservoir Characterization, December 5-8, 1999 (1999): 41-50.

David S. Duncan, Albert C. Hine, Andre W. Droxler "Tectonic controls on carbonate sequence formation in an active strike-slip setting: Serranilla Basin, Northern Nicaragua Rise, Western Caribbean Sea." Marine Geology, 160 (1999): 355-382.

C. Elmer Ferro, Andre W. Droxler, John B. Anderson, David Mucciarone "Late Quaternary shift of mixed siliciclastic-carbonate environments induced by glacial eustatic sea-level fluctuations in Belize." SEPM Special Publication, 62 (1999).

Andre W. Droxler "Documenting the past to model the future: MIS Stage 11." JOI/USSAC Newsletter, 12/1 (1999): 6-7.

Droxler, A.W., Burke, K., Cunningham, A.D., Hine, A.C., Rosencrantz, E., Duncan, D., Hallock, P., and Robinson, E "Caribbean Constraints on Circulation Between Atlantic and Pacific Oceans Over the Past 40 Million Years. In Tectonic Boundary Conditions for Climate Reconstructions." (1998): 160-191.

Wallace S. Broecker, Elizabeth Clark, Droxler, A. "Shell weights from intermediate depths in the Caribbean Sea." Geochemistry, Geophysics, and Geosystems.(Submitted)

Z. Muhammad, S. Bentley, A. Droxler, G. Dickens, B. Opdyke, L. Peterson, 'Sediment Flux to the Gulf of Papua Continental Slope Using Pb-210 Geochronology, Source to Sink Papua New Guinea Focus Area.' AAPG Handbook, AAPG, 2006.

Mallarino, G., Droxler A. et al "Sea Level Influence on the Nature and Timing of a Mini-Basin Sedimentary Infill (Northwestern Slope of the Gulf of Mexico)." AAPG Bull.(Submitted)

B. E. Prather, C. Pirmez, C. J. O'Byrne, C. Winker, G. Mallarino, A. W. Droxler, P. Flemings, J. Behrmann, C. John, S. "Scientific Party: Stratigraphic Evolution of Linked Basins within the Brazos-Trinity Slope System: Western Gulf of Mexico."

M. A. McFadden, L. C. Peterson, S. J. Bentley, G. Dickens, A. Droxler, B. Opdyke "Role of Paleoclimate and Paleoceanography in Sediment Delivery to the Gulf of Papua over the Last ~300kyrs Based on Foraminiferal and Organic Matter Stable Isotope Records."

L. A. Febo, S. J. Bentley, G. R. Dickens, A. W. Droxler, L. C. Peterson, B. N. Opdyke "Recent to Late Pleistocene Sedimentary Organic Matter in the Gulf of Papua, Papua-New Guinea."

Jorry, S. J., A.W. Droxler, E.Pohlman "Re-Flooding of Carbonate Bank-Tops and Initiation of Calci-Turbidite Deposition: Timing and Processes during Late Quaternary Deglacial Transitions."

Fulthorpe, C. S., G. Camoin, K. G. Miller, and A. Droxler, Pre-Quaternary sea-level changes: Records and processes, Basin Res., 20, 161-162

L. J. Patterson, S. J. Bentley, D. Henry, G. R. Dickens, A. W. Droxler, L. C. Peterson, B. N. Opdyke "Petrological and Geochemical Investigations of Deep Sea Turbidite Sands in the Pandora and Moresby Troughs, Source to Sink Papua New Guinea Focus Area."

E. N. Tcherepanov, A. W. Droxler, G. R. Dickens, S. J. Bentley, L. C. Peterson, L. Beaufort "Neogene Sources and Sinks of Carbonates and Siliciclastics in the Gulf of Papua, Papua New Guinea."

S. J. Bentley, Z. Muhammad, L. Patterson, A. Droxler, G. Dickens, L. Peterson, B. Opdyke "Modern and Pleistocene Turbidite Sedimentation in the Gulf of Papua S2S Study Area: Implications for Modulation of Sediment Sources by Oceanic and Climatic Processes."

Hayward, B., Kawagata, S., Grenfell, H.R., Droxler, A.W., and M.C. Shearer "Mid-Pleistocene extinction of bathyal benthic foraminifera in the Caribbean." Micropaleontology.(Submitted)

Droxler, A. W., R.Z. Poore, and L. Burckle, eds. "Marine Isotope Stage 11: An Extreme Interglacial."

J. M. Francis, B. Olson, G. R. Dickens, A. W. Droxler, L. Beaufort, T. De Garidel-Thoron, S. Bentley, L. C. Peterson, B. Opdyke "High Siliciclastic Flux during the Last Sea Level Transgression, Ashmore Trough, Gulf of Papua."

Mutti, Maria, Droxler, Andre W., and Cunnigham, Andrew D "Evolution of the Northern Nicaragua Rise during the Oligocene-Miocene: Drowning by Environmental Factors." Sedimentary Geology, 175: 237-258.

A. Droxler, G. Mallarino, J. M. Francis, J. Dickens, L. Beaufort, S. Bentley, L. Peterson, B. Opdyke "Early Part of Last Deglaciation: A Short Interval Favorable for the Building of Coralgal Edifices on the Edges of Modern Siliciclastic Shelves (Gulf of Papua and Gulf of Mexico)."

Belopolsky, A.V. and Droxler, A.W., "Cenozoic Evolution of the Maldive Carbonate System: Seismic Images of the Tectonic and Eustatic Influence on Carbonate Sedimentary Sequences." AAPG

Tcherepanov, E. N., A. W. Droxler, P. Lapointe, and K. Mohn, Carbonate sequence stratigraphy of the Gulf of Papua mixed depositional system: Neogene stratigraphic signature and eustatic control, Basin Research,

S. J. Jorry, G. Mallarino, A. W. Droxler, L. Beaufort, G. R. Dickens, S. J. Bentley, L. C. Peterson "Bundled Turbidite Deposition in the Central Pandora Trough (Gulf of Papua) during Last Glacial-Interglacial Cycle: a Potential Link to Millennial Time Scale Climatic Variations and Sea Level Fluctuations."

Belopolsky, A.V.and Droxler A.W. "3D Interpretation and PotentialReservoir Implication of a Middle Miocene Progradation Complex in the Maldive Inner Sea (Equatorial Indian Ocean)." AAPG Special Publication on Carbonate Reervoirs and 3D.

Presentations

"Tectonics, Circulation, and Climate in the Caribbean Gateway JOI/USSSP-sponsored IODP Workshop." Austin, Texas. (March 30-April 1, 2006)

"SealAix'06,." International Conference on SEA LEVEL CHANGES: Records, Processes, and Modeling, Giens, France. (25-29 September, 2006)

"Basin IV (Northern Central Gulf of Mexico: Chronostratigraphic framework based on planktonic foraminiferal biostratigraphy, oxygen isotope stratigraphy, and tephrochronology in Piston Cores collected by the R/V Marion Dufresne:." IODP Expedition 308 Post Cruise Meeting, Granada, Spain. (October 6-8, 2006) With Gianni Mallarino, Carlos Pirmez, and Walter OHayer.

"MIS 12-to-11 transgression in the context of a Mid-Brunhes Sea Level Re-organization: Records in Carbonates and Mixed Systems." INQUA-Morss Workshop on MIS 11, Woods Hole, Mass. (Jan. 29-31 2007)

"SWITCH IN CARBONATE-SILICICLASTIC SEDIMENT DISPERSAL AND ACCUMULATION DURING THE LAST GLACIAL SEA LEVEL CYCLE, GULF OF PAPUA SHELF EDGE AND ADJACENT BASINS." 2008 Ocean Sciences Meeting, Orlando, Florida, USA. (2-7 March 2008) With Droxler, A W; Francis, J; Jorry, S; Carson, B; Dickens, J; Beaufort, L.

"Sequence Stratigraphy Pattern and Oxygen isotope Records as Sea level Proxy: A Happy Reconciliation." Vail Symposium, Rice University Campus. (March 2002) With Belopolsky, A. V., Billups, K., and Vincent, E.

A clear Miocene pattern (Figure 1) emerges in the interpretation of a Shell 2-D seismic grid correlated to two industrial wells and three ODP sites in the Maldive Inner Sea and close vicinity. The basin-wide and synchronous backstepping of the Maldive carbonate bank margins in the early Miocene evolved into spectacular aggradations of those margins in the late part of the early Miocene (Burdigalian; 20.5-16.4 Ma) and earliest part of the middle Miocene (Langhian; 16.4-14.8 Ma). Then, following a systematic downward shift in the sedimentary deposition during the early part of the middle Miocene (early part of the Serravallian; 14.8 - 14.5 Ma), basin-wide synchronous progradations of the Maldive bank margins in the middle Miocene (Serravallian; 14.5 ? 11.2 Ma) are interpreted to represent five complete sea level cycles during an interval of falling sea level. The last cycle is characterized by unique massive gravity-flow deposits accumulated at the toe of the slope probably linked to a significant sea level drop at that time. The following late Miocene sequence (early Tortonian; 11.2 - 7.1 Ma) overlies the entire middle Miocene prograding complexes as well as the latest Burdigalian and Langhian bank margins. This sequence is interpreted as a major sea level transgression and flooding. This Miocene sequence stratigraphy pattern correlates well with ice volume variations estimated based upon a planktic oxygen isotope record at Site 714 (equatorial Indian Ocean) and a benthic oxygen isotope record, corrected for temperature by Mg/Ca, at Site 747 (Southern Ocean; Billups and Schrag, 2002) and the Haq et al. 1987 curve. The lightest oxygen isotope values in both records occurred between 17.5-14.5 Ma and 10.8- 9.5 Ma. In the planktic isotope record as in the benthic oxygen isotope record, corrected for temperatures, the 14.5-11 Ma interval is characterized by several ice volume cycles that show a systematic increase of the heaviest values of each cycle, with a maximum ice volume at 11 Ma. Between 14.5 and 13 Ma, the benthic foraminiferal record displays a clear ice volume increase. Although benthic foraminiferal oxygen isotope values do not support a further increase in ice-volume between 13-11 Ma, the seawater oxygen curve displays a series of maximum values, with the highest value linked to a sea-level regression at ~11 Ma. This maximum sea-level lowstand is followed by a major sea level transgression and minimum continental ice between 10.8-9.5 Ma, a trend not observed in the benthic isotope curve.

"Upper most Pleistocene Deglacial Establishment of Relict Barrier Reefs on Last Glacial Maximum Shelf Edge Mixed Siliciclastic/Carbonate Coastal Deposits (Gulf of Papua): Clues to Explain the Origin of Modern Barrier Reefs." Dr. Phil Symonds, Geoscience Australia, Canberra, Australia. (Feb 15 2006)

"Evolution of the Belize Barrier Reef: from an Isolated Carbonate Platform to a Rimmed Mixed Carbonate Siliciclastic Shelf.Evolution of the Belize Barrier Reef: from an Isolated Carbonate Platform to a Rimmed Mixed Carbonate Siliciclastic Shelf." AAPG Annual Meeting, Houston. (March 2002) With Ferro, C.E.

The northeastern translation of the Caribbean plate and its interaction with the Yucatan margin in the late Paleocene, produced a series of sub-parallel NNE-SSW-oriented ridges and troughs. In the Oligocene, neritic carbonates were deposited on the crests of the highest ridges forming four distinct offshore isolated platforms, referred to as Camels Hump, Turneffe, Glovers, and Lighthouse. Middle/late Miocene tectonic reactivation along the Belize margin triggered the shedding of platform-derived gravity flow deposits in Gladden Basin, whereas massive deposition of siliciclastic sediments, eroded from the Maya Mountains, partially filled up the Camels Basin. In the early Pliocene, siliciclastic sediments in Camels Basin prograded over Camels Hump, except for the northern part of this platform which remained high. Then, the coastline migrated eastwards into the northern part of Camels Basin and along the southeastern margin of the exposed Camels Hump platform, responding to a late Pliocene and early Pleistocene long-term sea-level fall. During the five late Quaternary transgressions and highstands, the shoreline shifted a considerable distance towards the west, re-flooding the Camels Hump platform and promoting the establishment of coral reefs over paleo-beach ridges and elongate coastal deposits formed during the late Pliocene and early Pleistocene long-term sea level lowstand. During the late Quaternary lowstands, the shorelines shifted in front of the barrier reef where sediments were reworked by longshore currents. During these lowstands, the southern lagoon became a fluvial plain where the drainage ran mostly parallel and behind the exposed and karstified barrier reef.

"Late Quaternary Sediment Delivery to Offshore Shelf Edges, Slopes and Basins, in the Gulf of Papua: Testing the Basic Principles of Sequence Stratigraphy during the last Glacial-Interglacial Sea Level Cycle." Chevron,, San Ramon, CA. (February 8, 2007)

"Origin of Modern Atolls: A Direct Response to Sea Level Fluctuations in the Last 3 Million of Years. Revisiting Darwin's Theory on Atoll and Barrier Reef Formation linked to Subsidence of Volcanic Edifice." Dr. Bradley Opdyke, Australian National University, Canberra, Australia. (Feb 17, 2006)

"Miocene Carbonate Sequence Stratigraphy Pattern in the Maldives Reconciled with Foraminiferal Oxygen Isotope Records Used as Proxies for Ice Volume Variations." AAPG, AAPG Annual Meeting. (March 2002) With Belopolsky, A.V., Billups, K., Vincent, E.

Basin-wide aggradations of the carbonate bank margins between 18.5 and 15 Ma in the Maldives evolved into well-developed margin progradations between 14.5-11 Ma, representing five sea-level cycles generated during an overall regression. The last cycle is characterized by massive gravity-flow deposits triggered by a unique sea-level fall at ~11 Ma. The subsequent late Miocene sequence (11.0-9.5 Ma), flooding the prograding complexes and the earliest middle Miocene bank margins, was deposited during a major sea-level transgression. This Miocene sequence stratigraphy pattern correlates well with ice volume variations estimated based upon a planktic oxygen isotope record at Site 714 (equatorial Indian Ocean) and a benthic oxygen isotope record, corrected for temperature by Mg/Ca, at Site 747 (Southern Ocean; Billups and Schrag, in press). The lightest oxygen isotope values occurred between 18.5-14.5 Ma and 11.0-9.5 Ma. In the planktic isotope record, the 14.5-11 Ma interval is characterized by several ice volume cycles that show a systematic increase of the heaviest values of each cycle, with a maximum ice volume at 11 Ma. Between 14.5 and 13 Ma, the benthic foraminiferal record displays a clear ice volume increase. Although benthic foraminiferal oxygen isotope values do not support a further increase in ice-volume between 13-11 Ma, the seawater oxygen curve displays a series of maximum values, with the highest value linked to a sea-level regression at ~11 Ma. This maximum sea-level lowstand is followed by a major sea level transgression and minimum continental ice between 11.0-9.5 Ma.

"CENOZOIC EVOLUTION OF THE MIXED CARBONATE - SILICICLASTIC SYSTEM IN THE GULF OF PAPUA (PAPUA NEW GUINEA),A SEQUENCE STRATIGRAPHIC APPROACH." Dr. Stanley Pono, Dept. of Energy and Petroleum, Port Moresby, Papua New Guinea. (Feb. 20 2006)

"Observing Cambrian Stromatolites: Floating Down the Llano River (Central, Texas)." Chevron, San Ramon. (February 9, 2007)

"Controls on the Oligo-Miocene Isolated Carbonate Platform Evolution in the Indian Ocean and South-East Asia." AAPG, AAPG Annual Meeting. (March 2002) With Belopolsky, A. V.

Isolated carbonate platforms flourished in the Far East during the Oligocene and Miocene. Many trapped hydrocarbons and represent important regional exploration plays. These platforms formed in various settings and their development, although controlled by local factors, was influenced by similar carbonate-producing fauna and affected by eustatic sealevel fluctuations. The large isolated platform of the Maldives (equatorial Indian Ocean) evolved since the late early Oligocene in a stable tectonic setting. The platform became exposed at the very beginning of the late Oligocene. An overall backstepping and partial drowning in the late Oligocene and early Miocene was followed by aggradation in the outskirt of the carbonate system during the latest early Miocene and earliest middle Miocene. Bi-directional middle Miocene progradations are interpreted as a result of high frequency/high amplitude sea-level fluctuations. In the earliest late Miocene, the prograding complexes were flooded and the carbonate margins backstepped and aggraded in response to a significant sea-level transgression. Several smaller isolated platforms in the Far East were studied and their evolution was compared with the Maldives. Malampaya and Camago buildups, offshore Palawan (Philippines) aggraded and backstepped during the late Oligocene and early Miocene, and drowned during the late early Miocene. The Yadana platform in Andaman Sea, offshore Myanmar, aggraded during the late Oligocene and early Miocene and drowned in the ealiest (?) middle Miocene. The Segitiga Platform in the East Natuna Sea, Indonesia, originated in the early Middle Miocene, prograded and coalesced in the middle-late Miocene, and backstepped in the late Miocene and early Pliocene.

"Late Quaternary Sediment Delivery to Offshore Shelf Edges, Slopes and Basins,in the Gulf of Papua: Testing the Basic Principles of Sequence Stratigraphy during the last Glacial-Interglacial Sea Level Cycle." University of Hamburg, Hamburg, Germany. (March 6, 2007)

"Stratigraphy Core Group Sea Level Influence on the Nature and Timing of a Mini basin Sedimentary Infill (Northwestern Slope of the Gulf of Mexico) and IODP APL-664." ExxonMobil Exploration Hydrocarbon Systems Resources, Houston, TX. With G. Mallarino.

"The Gulf of Papua Mixed Carbonate Siliciclastic System: Today and as far back as the Miocene." Prof. Hugh Davis, University of Papua New Guinea. (Feb 22, 2006)

"Droxler, A.W. and Cunningham, A.C.: Neogene Evolution of the Pedro Channel Carbonate System, Northern Nicaragua Rise." University of Texas Institute for Geophysics, Austin, TX. (September 2002) With Cunningham, A.C.

Neogene Evolution of the Pedro Channel Carbonate System, Northern Nicaragua Rise By Cunningham, Andrew David* Presented by Droxler, Andre (Rice University) Pedro Channel is the deepest, central-most seaway on the northern Nicaragua Rise. A revised bathymetric map illustrates a seafloor dissected by numerous canyons and gullies as well as portions of a drowned carbonate bank with keep-up bank morphology. The 3.5 kHz echogram data interpretation in Pedro Channel indicates the banks provide both a line and point source of sediment to the channel floor. Concentric facies belts along the bank margins illustrate the line source concept. Localized zones of coarser-grained deposits at the bases of canyons along the bank margins depict the point source concept. The synthetic seismograms for ODP Site 1000 have low correlation coefficients (0.321). Visual correlation of the synthetic seismogram with SCS data indicates a good correlation of seismic facies with various lithologic intervals. An interpretation of SCCS and MCS data reveals that periplatform sedimentation has dominated Pedro Channel from the early Miocene to recent. Dredge haul analysis suggests that a neritic carbonate bank drowned partially in the middle Oligocene and finally in the early Miocene. Erosion affects the edges of this drowned bank in the middle Miocene. Faults in Pedro Channel illustrate characteristics typical of sinistral strike-slip faults including vertical to sub-vertical faults, faults that splay upward, forced folds, and linear fault traces in map view. *From PhD Dissertation at Rice University, 1998, 378 p.

"Neogene Evolution of the Mixed Carbonate/Siliciclastic Margin of the Gulf of Papua: Preliminary Results of Spring 2004 PANASH Cruise on the R/V Melville." Anadarko, The Woodlands, Texas.

"Increased Atmospheric CO2 concentration, Global Warming, and Modern Coral Reefs: a Geological Point of View of Current and Future Challenges for Coral Reefs." Kinkaid Middle School (7th Grade), Houston, TX.

"Mid-Brunhes First High Amplitude Transgression(s): Platform Top and Siliciclastic Shelf Contemporaneous Re-flooding Recorded on the Slopes of Great Bahama Bank and Central Belize Barrier Reef." 11th International Coral Reef Symposium, Fort Lauderdale, Florida. (July 7-11, 2008) With André Droxler and Brooke E. Carson.

Schriftenr. Dt. Geol. Ges., 58, 49

"Caribbean constraints on circulation between Atlantic and Pacific oceans over the past 40 million years." Tectonics, Circulation, and Climate in the Caribbean Gateway, Austin, TX. (March, 30-2006) With Kevin Burke.

"Late Quaternary Sediment Delivery to Offshore Shelf Edges, Slopes and Basins, in the Gulf of Papua: Testing the Basic Principles of Sequence Stratigraphy during the last Glacial-Interglacial Sea Level Cycle." Petrobras, Buenos Aires (Argentina). (July 2007)

"Miocene Carbonate Sequence Stratigraphy Pattern and Oxygen isotope Records as Sea level Proxy." ESF Workshop: carbonate Systems during the Oligocene-Miocene Climatic Transition, Potsdam, Germany.

"Early Part of Last Deglaciation: A Short Interval Favorable for the Building of Coralgal Edifices on the Edges of Modern Siliciclastic Shelves (Gulf of Papua and Gulf of Mexico)." AAPG 2006 Annual Meeting, Houston, Texas. (April 10, 2006) With Andre Droxler, Gianni Mallarino, Jason M. Francis, Jerry Dickens, Luc Beaufort, Samuel Bentley, Larry Peterson, and Bradley Opdyke.

"Past, Present, and Future Rice University studies in the Gulf of Papua." Fugro, Perth, Australia. (July 2007)

"The Academic Test in last 25 years of The Vail Sea-Level Curve: the bias point of view of carbonates." Sequence Stratigraphy and Global Changes in Sea Level Symposium honoring Prof. Peter R. Vail; Co-sponsored by The Franklin Institute and the Department of Earth and Environmental Science of The University of Pennsylvan, University of Pennsylvania.

"Mid-Brunhes High Amplitude Transgression(s): Platform Top and Shelf Contemporaneous Re-flooding Recorded on the Slopes of Great Bahama Bank and Central Belize Barrier Reef." XXVII INQUA Congress, Cairns, Australia. (28th July - 3rd August, 2007) With B.E. Carlson.

"Origin of Modern Atolls: A Direct Response to Sea Level Fluctuations in the Last 3 Million of Years: Revisiting Darwin's Theory on Atoll and Barrier Reef Formation linked to Subsidence of Volcanic Edifice." Weekly Seminar Series University of Delaware, University of Delaware.

"Upper most Pleistocene Deglacial Establishment of Relict Barrier Reefs on Last Glacial Maximum Shelf Edge Mixed Siliciclastic/Carbonate Coastal Deposits (Gulf of Papua): Clues to Explain the Origin of Modern Barrier Reefs." ExxonMobil, Dr. Jim Weber, Houston, Texas. (May 3, 2006)

"Late Quaternary Sediment Delivery to Offshore Shelf Edges, Slopes, and Basins, in the Gulf of Papua:Testing the Basic Principles of Sequence Stratigraphy during the last glacial-interglacial sea level cycle." XXVII INQUA Congress, Cairns, Australia . (28th July - 3rd August, 2007.) With G.R. Dickens, J.M. Francis, B.E. Carson, S.J. Jorry, G. Malarino, L. Beaufort, and B. Opdyke.

"Mid Brunhes origin of modern atolls: a model developed in the Maldives and Moruroa atolls." EGU meeting Vienna, Special session on the honor of Wolfgang Schlager, Vienna, Austria.

"Upper most Pleistocene Deglacial Establishment of Relict Barrier Reefs on Last Glacial Maximum Shelf Edge Mixed Siliciclastic/Carbonate Coastal Deposits (Gulf of Papua): Clues to Explain the Origin of Modern Barrier Reefs." Drs. Larry Peterson and Gregor Eberli, RSMAS, Uinversity of Miami, Miami, Florida. (May 9, 2006)

"Modern Barrier Reefs and Atolls: Possible Link to A Global Carbonate Dissolution Event during the Mid Brunhes (MIS 11; approx. 400 kya)." Geologisches Institut ETH Zentrum, Dr. Judith MacKenzie, Zurich, Switzerland. (June 14, 2006)

"Evaluation of Reciprocal Sedimentation during the Last Glacial Sea Level Cycle on a Tropical Mixed Siliciclastic-Carbonate Margin, Ashmore Trough, Gulf of Papua." 2008 Joint Annual Geological Society of America Meeting, Houston, TX, USA. (5-9 Oct. 2008 ) With Jason M. Francis, Brooke E. Carson, Stephen J. Jorry, André W. Droxler, Gerald R. Dickens.

"Global Neogene Carbonate Sequence Stratigraphy Signature: Record of Sea Level Eustatic Fluctuations." Workshop Towards an Integrated Data-Modeling Perspective of Miocene Climate Change - co-conveners Drs.Torsten Bickert, M. Schulz, and J. Zachos, Research Center Ocean Margins, University of Bremen, Bremen, Germany. (June 19-22, 2006)

"Slope Sediment Accumulation Over the Last 850 Ky on the Belize Tropical Mixed Siliciclastic-Carbonate Margin." 2008 Joint Annual Geological Society of America Meeting, Houston, TX, USA. (5-9 Oct. 2008) With Brooke E. Carson, André W. Droxler, Gerald R. Dickens, R. Mark Leckie, Luc Beaufort.

"Source to Sink Research Program in the Gulf of Papua at different time scales." Shell New Ventures,, Rijswijk, The Netherlands. (June 26, 2006)

Scholar-in-Residence. "The Future of Coral Reefs in a Warming Earth & Current Earth Climate Warming: Clues & Assessment from the Past." Episcopal High School, Houston, TX. (November 9, 2007)

"Carbonate-Siliciclastic Interactions in the Cenozoic Mixed Depositional System of the Gulf of Papua. (Papua New Guinea)." 2008 Joint Annual Geological Society of America Meeting, Houston, TX, USA. (5-9 Oct. 2008) With Evgueni N. Tcherepanov, André W. Droxler, Philippe Lapointe and Kenneth Mohn Mohn,.

"Evolution of the Maldives and future climate warming or A Long Tale of Sea Level Changes." Marine Research Centre, Malø, Republic of Maldives . (November 28, 2007)

"The Origin of Modern Barrier Reefs. A lesson from the evolution of the Belize margin and the Gulf of Papua." Shell Carbonate Research Group,, Rijswijk, The Netherlands. (June 26, 2006)

"Early Sea Level Transgressions in the Past 4 MY, Optimum Times for Neritic Carbonate Global Establishment/Growth on Low Latitude Siliciclastic Shelf Edges." 2008 Joint Annual Geological Society of America Meeting, Houston, TX, USA. (5-9 Oct. 2008) With Andre W. Droxler.

"Neogene Evolution of the Mixed Carbonate Siliciclastic System of the Gulf of Papua." BP Exploration Operating Co Ltd, Dr. Andrei Belopolsky, Sunbury-on-Thames, UK. (June 28, 2006)

"Sediment Delivery to Offshore Shelf Edges, Slopes & Basins PART II Gulf of Papua Source to Sink Initiative." NSF-Funded MARGINS Source-to-Sink Theoretical Institute: Teleconnections Between Source and Sink in Sediment Dispersal Systems, Eureka, California. (Sept. 19, 2006) With Dr. Sam Bentley, PANASH and Pecten Scientific Shipboard Parties.

"Early Transgressive Establishment of Relict Upper most Pleistocene Barrier Reefs on LGM Coastal Siliciclastic Deposits in the Gulf of Papua and the Gulf of Mexico: Clue to Understand the Mid Brunhes Global Origin of Modern Barrier Reefs." SealAix'06, SEA LEVEL CHANGES: Records, Processes, and Modeling, Giens, France. (Sept.27, 2006) With Gianni Mallarino, Jason M. Francis, Jerry Dickens, Bradley Opdyke, Luc Beaufort, James Daniell, Samuel Bentley, and Larry Peterson.

"Source to Sink Research Program in the Gulf of Papua; Preliminary results." Internal Conference, TOTAL La Defense, Dr. Christian Blanpied, Paris, France. (October 2, 2006) With Stephan Jorry, Jason Francis, Brooke Carlson, and Eugene Tcherepanov.

"Evolution of the Gulf of Papua at different time scales. Preliminary results." TOTAL Internal Conference, TPau OTAL Research Center, Dr. Philippe Lapointe, Pau, France. (October 3, 2006) With Stephan Jorry, Jason Francis, Brooke Carlson, and Eugene Tcherepanov.

"Early Sea Level Transgressions in the Past 4 MY, Optimum Times for Neritic Carbonate Global Establishment/Growth on Low Latitude Siliciclastic Shelf Edges." Houston Geological Society General Luncheon Meeting, Petroleum Club of Houston, Houston, TX, USA. (November 19, 2008) With Andre W. Doxler.

"Current Earth Climate Warming: Clues & Assessment from the Past." Foundation for Contemporary Theology, Houston, TX, USA. (May 16, 2008) With Andre W. Droxler.

"Response of Coral Reefs to Climate Change: Past Evolution to Forecast the Future." Hanscom Sigma Xi, The Scientific Research Society Dr. Rainer Dressler, Hanscom Conference Center, Hanscom AFB, MA. (Nov. 18, 2006)

"Past and Future Atmospheric CO2 and Global Temperature Increases:Could Sea Level Rise Out Of Control?." River Oaks Breakfast Country Club, Houston, TX, USA. (July 1, 2008) With Andre W. Droxler.

"Upper most Pleistocene Deglacial Establishment of Relict Barrier Reefson Last Glacial Maximum Shelf Edge Mixed Siliciclastic/Carbonate Coastal Deposits (Gulf of Papua): Clues to Explain the Origin of Modern Barrier Reefs." Weekly Departmental Seminar Department of Geosciences University of Massachusetts, Amherst, MA. (November 17, 2006)

"Late Quaternary Sediment Delivery to Offshore Shelf Edges, Slopes and Basins, in the Gulf of Papua: Testing the Basic Principles of Sequence Stratigraphy." University of Geneva, Sciences de la Terre Dr. Eric Davaud, Geneva, Switzerland. (Dec. 18, 2006) With PANASH and PECTEN Scientific Shipboard Parties.

"Carbonates and mixed carbonates sea-level records from millennial to million year time scales." Drilling to Decipher Long-term Sea-level Changes and Effects Workshop, Salt Lake, Utah. (October 7, 2007)

"The Sedimentary Record: Realistic Reference for Assessing Future Global Sea-Level Rise." 2008 Joint Annual Geological Society of America Meeting, Houston, TX, USA. (5-9 Oct. 2008) With André W. Droxler.

"Past Earth Climate Change in the Context of Current and Future Global Warming: Facts and Implications." Houston Geological Society , Lunchon Petroleum Club of Houston, Houston, Texas. (October 31, 2007)

"Re-Flooding of Carbonate Bank-Tops and Initiation of Calci-Turbidite Deposition." 2007 AAPG Meeting, Long Beach, CA. (April 2007) With S.J., Jorry and E. Pohlman.

"Mass Transport on the Gulf of Papua Contiental Slope: Physiographic and Gradient Controls on Deposition." 2007 GSA Annual Meeting, Denver, CO. (October 31, 2007) With J.M. Francis, J. Daniell, G.R. Dickens, S.J. Bentley.

"High Frequency/High Magnitude Middle Miocene Sea Level Cycles Recorded in Carbonate Bank Margins in the Maldives." AGU Spring Meeting, Boston. (May 2001) With Belopolsky, A. V.

"The Marine Carbonate System in the Mid-Brunhes: Clear Case of Basin to shelf Fractionation." Lecture at ETH, Zurich, Switzerland. (June 1998)

"The Paradox of Coral Reef Occurrence on the South Texas Shelf During the Last Deglaciation (18-11 ky BP)." AGU Ocean Meeting, San Antonio. (January 2000) With Belopolsky, A.V.

"~ 0.5 MA Oscillations in Carbonte Preservation and Dissolution." PRCP '99, Paleoceanography of Reefs and Carbonate Platforms, Modern to Miocene, Aix en Provence, France. (September 27-30, 1999) With Michelle C. Shearer.

"The Caribbean Carbonate Crash at the Middle to Late Miocene Transition: Linkage to the Establishment of the Modern Global Ocean Conveyor." AGU Spring Meeting, Boston. (May 2001) With Roth, J. M.

"The Caribbean Carbonate Crash: Middle to Late Miocene Transition." The VIth International Conference of Paleoceanography, Lisbon. (August 1998) With Roth, J.M. and Cameo, K.

"The origin and Cenozoic evolution of the Belize Barrier Reef and Offshore Atolls." AAPG Annual Meeting, New Orleans. (April 2000) With With Ferro, C.E. and Morrice, S.

"Timing, Distribution and Composition of Calciturbidites." PRCP '99, Paleoceanography of Reefs and Carbonate Platforms, Modern to Miocene, Aix en Provence, France. (September 27-30, 1999) With Nils Andresen, John J.G. Reijmer .

"Linkage Between Carbonate Bank Foundering (Northern Nicaragua Rise Rise), Late Middle Miocene Establishment of the Caribbean Current, and the Initiation of NADW production." AGU 98 Spring Meeting, Boston. (Spring, 1998) With Cunningham, A.D., Roth, J.M., and Kameo, K.

"Rapid Response of Neritic Carbonates to Sea Level Fluctuations." PRCP '99, Paleoceanography of Reefs and Carbonate Platforms, Modern to Miocene, Aix en Provence, France. (September 27-30, 1999) With Invited Talk.

"Similarities Between a Sequence Stratigraphy Pattern Common to the Maldives and the Bahamas, and a Planktic Oxygen Isotope Record from the Equatorial Indian Ocean in the Miocene (19-9 Ma)." AGU Spring Meeting, Boston. (May 2001) With Belopolsky, A. V.and Vincent E.

"The Last 500,000 Years: New Insights for a Warm Future." Baker Conference on Global Warming: Science and Policy, Rice University,Houston, TX. (September 2000)

"Late Brunhes Sea Level-Induced Formation of Modern Atolls in the Maldive Archipelago (Equatorial Indian Ocean)." AAPG Meeting Annual Meeting, Invited Contribution for a special session on 'Selected Outstanding Presentations from around the World', Denver. (June 2001) With Belopolsky, A. V. and Aubert, O.

"Latest Pleistocene Transgressive Coralgal Reefs on the Edge of the South Texas Shelf: Analogs for Reefal Reservoirs Buried in Siliciclastic Shelves." GCSSEPM Foundation 19th Annual Research Conference "Advanced Reservoir Characterization", Houston, TX. (December 5-8, 1999) With Andrei V. Belopolsky.

"Rapid response of neritic carbonates to sea level fluctuations at Milankovitch frequencies and longer timescale: Oligocene to late Quaternary case studies." AAPG Annual Meeting, New Orleans. (April 2000)

"Testing the global Nature of Neogene Sea Level events, Using Sequence Stratigraphy and Computer Simulationsi." AAPG Annual Meeting, Salt Lake City, Utah. (May, 1998) With Sen, A., Kendall, C.G., and Belopolsky, A.

"High Resolution Seismic Image of Southern bank Offshore Corpus Christi (TX). One among several Coralgal Reefs Established Along the Southern Texas Shelf as Potential Roots for Barrie Reef Development." AAPG Annual Meeting, Salt Lake City, Utah. (May 1998) With Belopolsky, A., Mucciarone, D.A., and Marsset, B.F.

"High-Resolution Study of the MIS 11 Maximum Dissolution Interval at Subthermoclinal Depth in Pedro Channel (Northern Nicaragua Rise, Caribbean Sea)." AGU 1999 Fall Meeting, San Francisco, CA. (December 13-17, 1999) With Kate Zeigler, James Schwartz, Michelle C. Shearer.

"The Obliquity Cycle of Nutricline Variations during the last 300,000 years in the Caribbean and the Bahama Bank ? The linkage to the High Latitude Climate." 7th International Conference on Paleoceanography, Sapporo, Japan . (September 2001) With Kameo, K., Watanabe, R., Mita, I., Shearer, M.C., and Sato, T.

"Timing and amplitudes of sea level fluctuations extracted from carbonate sequence geometries: an Eocene-middle Miocene case study in the Maldives (Indian Ocean)." AAPG Annual Meeting, New Orleans. (April 2000) With With Belopolsky, A.V.

"Eocene to Late Miocene (55-10 Ma) Evolution of the Maldive Carbonate Platform: Is the Benthic Oxygen Isotope Record an Adequate Sea Level Proxy." AGU 1999 Fall Meeting, San Francisco, CA. (December 13-17, 1999) With Andrei V. Belopolsky.

"Etablissement des Barrieres Recifales Modernes et Submergance des Plates-Formes Carbonates Existantes durant la periode du Mid-Brunhes: Transfer des Carbonates du Domaine Pelagique aux Environements Neritiques." Universite de Provence, Aix-en-Provence, France. (June 1998)

"Late Brunhes Sea Level-Induced Formation of Modern Atolls in the Maldive Archipelago (Equatorial Indian Ocean)." AAPG International Meeting, Bali, Indonesia. (October 2000) With With Belopolsky, A.V. and Aubert, O.

"Temperature and Hydrological Changes in the Western Caribbean during the Last Glacial Cycle." 7th International Conference on Paleoceanography, Sapporo, Japan. (September 2001) With Schmidt, M.W., Spero, H.J., Lea, D.W.

"Late Quaternary Lateral and Vertical Successions of Carbonate and Siliciclastic Sediments Along Continental Margins: The Success Story of a Mixed Marriage." VIII Sequence Stratigraphy Luncheon, BP-Amoco, Houston, TX. (October 21, 1999) With Invited Speaker.

"Tectonic and Eustatic Control on the Evolution of the Maldives Carbonate Platform from Eocene to Present." AAPG International Meeting, Bali, Indonesia. (October 2000) With With Belopolsky, A. V.

"Unusual Warm Climates During the Mid-Brunhes (Interglacial Stages 9 and 11)." Invited Speaker, The VIth International Conference of Paleoceanography, Lisbon. (August, 1998)

"Mid-Brunhes (Marine Isotope Stage 11)Unusually Warm Climate and Modern Barrier Reefs." Texas A&M Oceanography DepartmentWeekly Seminar, College Station,Texas. (September 25, 2000)

"Mid-Brunhes Intense CaCO3 Dissolution in the Caribbean Sea From Subthermocline Levels to Below Sill depth: High Flux of AAIW Tied to Maximum NADW Production." The VIth International Conference of Paleoceanography, Lisbon. (August 1998)

"Rapid Response of Neritic Carbonates to Sea Level Fluctuations at Milankovitch Frequencies and Longer Time Scale: Oligocene to Late Quarternary Case Studies." Shell US Internal Seminar, Bellaire, TX. (August 16, 1999)

"DARWIN and the Voyage of the BEAGLE:Revisiting Darwin's Arguments for his Subsidence Theory on Atoll and Barrier Reef Formation." Rice University Continuing Studies and The Houston Museum of Natural Science, Houston,TX. (November 7, 2000)

"Intense mid-Brunhes carbonate dissolution in Caribbean Quaternary sediments: Neritic carbonate Golden Age and maximum NADW production." AAPG Annual Meeting, San Antonio, TX. (April 11-14, 1999) With Michelle C. Shearer.

"Unusually Warm Climates during the Mid-Brunhes: Golden Ages for Carbonate Production." Invited Speaker, Weekly Seminar Series Dept. of Geology and Geophysics, Rice University. (October 1998)

"Oligocene and Miocene Sea Level Record: New Insights From the Maldives." AAPG Annual Meeting, San Antonio, TX. (April 11-14, 1999) With Andrei Belopolsky.

"Unusually Warm Climates during the Mid-Brunhes: Golden Ages for Carbonate Production." Invited Speaker, Weekly Seminar Series Dept. of Earth and Marine Siences, University of South Carolina. (October, 1998)

"Neogene Evolution of the Pedro Channel Carbonate System, Northern Nicaragua Rise." AAPG Annual Meeting, San Antonio, TX. (April 11-14, 1999) With Andrew D. Cunningham.

"Carbonate Bank Response to Middle Miocene Sea Level Fluctuations in the Maldives (Equatorial Indian Ocean)." PRCP '99, Paleoceanography of Reefs and Carbonate Platforms, Modern to Miocene, Aix en Provence, France. (September 27-30, 1999) With Andrei V. Belopolsky.

"Sixth EPSP IODP Meeting." Geosciences-Azur, Observatoire Oceanologique de Villefranche sur Mer, Villefranche sur Mer, France. (June 22-23, 2006)

"Modern Analogs from Source to Sink." SEPM, Houston, TX. (April 9-12, 2006 )

"TEMPORAL AND SPATIAL PATTERNS OF CARBONATE AND SILICICLASTIC SEDIMENTATION ACROSS A TROPICAL CONTINENTAL MARGIN." 2008 Ocean Sciences Meeting, Orlando, Florida, USA. (Meeting ø 2-7 March 2008) With McFadden, M A; Peterson, L C; Bentley, S J; Dickens, G; Droxler, A; Opdyke, B.

"A new view of the Neogene to Quaternary evolution of the Maldives carbonate platform (Indian Ocean)." European Geosciences Union General Assembly 2008, Vienna, Austria. (13 – 18 April 2008) With Betzler, C., H|bscher, C., L|dmann, T., Reijmer, J.J.G., Droxler, A., Lindhorst, S., Rvmer, M., Jaramillo, D., F|rstenau, J. & Shipboard Scientific Party Cruise M74/4.

"Switch in Carbonate-Siliciclastic Sediment Delivery and Accumulation During the Last 130 Ky, Gulf of Papua Shelf Edge and Adjacent Basins." 2008 AAPG Annual Convention & Exhibition, San Antonio, Texas. (April 20-23, 2008) With A. W. Droxler, J. Francis, S. Jorry, B. Carson, J. Dickens and L. Beaufort.

"Late Pliocene/Pleistocene Siliciclastic Influx and Resulting Burial of a Tertiary Carbonate System in the Gulf of Papua." 2008 AAPG Annual Convention & Exhibition, San Antonio, Texas. (April 20-23, 2008 ) With E. Tcherepanov, A. Droxler, P. Lapointe, and K. Mohn.

"Mid-Brunhes First High Amplitude Transgression (s): Platform Top and Shelf Contemporaneous Re-flooding Recorded on the Slopes of Great Bahama Bank and Central Belize Barrier Reef." SEPM Carbonate Research Group, 2007 AAPG Annual Meeting, Long Beach, CA. (April 2007) With B.E. Carson.

"Youthful Belize Barrier Reef: Strengthening the Model for a Mid-Brunhes Global Establishment of Modern Barrier Reefs." American Geophysical Union, San Francisco. (December 2002) With Beaufort, L., and Labeyrie, L.

Youthful Belize Barrier Reef: Strengthening the Model for a Mid-Brunhes Global Establishment of Modern Barrier Reefs Andre W. Droxler, andre@rice.edu, Rice University, Dept. of Earth Science, MS-126, P.O. Box 1892, Houston, TX 77251 United States Luc Beaufort, beaufort@cerege.fr, CEREGE, Domaine de l?Arbois, Les Milles, BP 80, Aix en Provence, 13545 France Laurent Labeyrie, Laurent.Labeyrie@lsce.cnrs-gif.fr, Laboratoire des Sciences du Climat et de l?Environnement, CNRS, av. de la Terrasse , Gif/Yvette, 91198 France During a late June 2002 transit from Panama to Cancun on the R/V Marion Dufresne, a spectacular 37.6 m-long piston core MD02-2532 was retrieved from a water depth of 333 m at 3 km in front of the central Belize Barrier Reef. The core penetrated the distal part of a seismic wedge, made up of five distinctive subunits, and the upper part of an underlying seismic unit characterized by sub-parallel seismic reflectors. The age of the oldest sediment at the bottom of the core ranges, based upon nannofossil assemblage, between 720 and 450 kyr. Moreover, nannostratigraphy analyses at 1.5 m sample intervals yield three nannofossil age markers, LAD of Pseudoemiliania lacunosa, FAD and the Acme zone of Emiliania huxleyi were identified between 22.5-24.0 m, 12.0-10.5 m, and 4.5-3.0 m, respectively. Early interpretation of shipboard color reflectance and magnetic susceptibility data sets, in addition to visual core description and smear slide observations, seem to identify in the upper 24 m of the core five distinct light subunits characterized by low magnetic susceptibility separated by four darker subunits characterized by high magnetic susceptibility. In contrast the lower 13 m of the core are characterized by calcareous oozes rich in angular quartz and lithogenic grains, and a magnetic susceptibility signature clearly distinct from the upper 24 m of the core. The five subunits in the upper 24 m of the core are interpreted to consist of distal barrier reef deposits and correspond to late Quaternary interglacial marine isotope stages 11, 9, 7, 5, and 1. Those five subunits overlie an early Brunhes mixed siliciclastic-carbonate unit representing a deep open continental shelf. The establishment of the Australian Great Barrier Reef was recently dated to be Brunhes in age and was given an age of 600 +/- 280 ka. Moreover the coralgal Key Largo limestone overlying quartz-rich early Pleistocene shelf deposits in the Florida Keys was estimated to late Pleistocene age. The initial analyses of core MD02-2532 associated with results of earlier research along the Belize margin point out, therefore, that, as for other modern barrier reefs offshore Northeast Australia, and South Florida, the Belize Barrier Reef represents young (late Pleistocene) and thin carbonate sedimentary deposits covering a series of late Pliocene and early Pleistocene lowstand prograding siliciclastic paleo coastlines (deltas and possibly beach ridges). According to our model, these extraordinary findings can be explained by two unique, global, and systematic floodings of early Pleistocene lowstand tropical paleo fluvial plains during the onset of interglacial marine isotope stages 11 and 9. These two exceptionally high amplitude (more than 100 m) sea level transgressions are the first such transgressions since the onset of the main northern Hemisphere glaciations 2.8 Ma. Moreover, those mid-Brunhes high amplitude sea level transgressions and high-sea-level intervals dramatically contrast with the late Pliocene and early Pleistocene overall lowering of the marine base level tied to the establishment and the expansion of the northern hemisphere major continental ice sheets.

Schriftenr. Dt. Geol. Ges., 58, 205

Schriftenr. Dt. Geol. Ges., 58, 105

"Sedimentation patterns in the Neogene of the Maldives (Northern Indian Ocean)." 9th Nederlands Aardweten-schappelijk Congres, Velhoven, Netherlands. (18-19 March, 2008) With Paul, A., Reijmer, J., Førstenau, J., Betzler, C., Høbscher, C., Lødmann, T. & Droxler, A.

"Late Quaternary Paleoceanography, Productivity, and Sedimentation in the Western Tropical Pacific, Gulf of Papua." AGU 2008 Fall Meeting, San Francisco, California, USA. (15-19 December 2008) With McFadden, M. A., Peterson, L. C., Droxler, A. W., Dickens, G. R., Opdyke, B. N. and Bentley, S. J.

"Linking Variations at Millennial Time Scale of Sediment Nature and Accumulation to Sea-Level Fluctuations, Since Last Glacial Maximum, Along a Core Transect Across Central Pandora Trough (Gulf of Papua)." AGU 2006 Fall Meeting, San Francisco. (Dec 12, 2006) With Stiphan Jorry, Emilie Capron, Lucie Minabriaz, Gianni Mallarino, Gerald Dickens, Samuel Bentley, Larry Peterson, Bradley Opdyke, Luc Beaufort .

"L'øpanouissement au mid Brunhes des barriøres røcifales et plates-formes carbonatøes: Globale influence sur les carbonates océaniques et le CO2 atmosphérique?." Laboratoire døEtudes en Géophysique et Océanographie Spatiale (LEGOS), Centre National d'Etudes Spatiales (CNES)., Toulouse, France. (June 25, 2008) With Andre W. Droxler.

"Reef Formation and Male' Reef Slope Failure Mapping." Environmental Research Center, Ministry of Environment, Energy, and Water, Republic of Maldives, Male, The Maldives. (August 21, 2008) With Andre Droxler, David Naar, and Brian Donahue.

"The Sedimentary Record: Realistic Reference for Assessing Future Global Sea-Level Rise (en frangais)." Universite de Geneve, Section des Sciences de la Terre, Geneve, Switzerland. (November 27, 2008) With Andre W. Droxler.

"Modern Analogs from Source to Sink." SEPM, Houston, TX. (12 April 2006 )

Session Conveneer and co-chair with Mark Deptuck (Shell). "Modern Analogs from Source to Sink (SEPM)." American Association of Petroleum Geologists 2006 Annual Meeting, Houston, TX. (April 11-12, 2006)

"Session 134 Toward Integrating Source-to-Sink Field Studies of Sediment Dispersal Systems." 2008 Ocean Sciences Meeting, Orlando, Florida, USA. (2-7 March 2008) With Clark Alexander, Andre Droxler, Alan Orpin, John Swenson .

"Poster Session: Mixed Carbonate Siliciclastic Margins: Short- and Long-Time-Scale Evolution." 2008 AAPG Annual Convention & Exhibition, San Antonio, Texas, USA. (April 20-23, 2008) With Andre Droxler, Gregor Eberli and Eberhard Gischler.

"T32. Mixed Siliciclastic-Carbonate Systems: Mixing through Time and Space." 2008 Joint Annual Geological Society of America Meeting, Houston, TX, USA. (5-9 Oct. 2008) With Jason Francis and Andre Droxler.

Theses

Andrew Cunningham, Doctoral. "Neogene Evolution of the Pedro Channel Carbonate System, Northern Nicaragua Rise." (1998).

Vitor Abreu, Doctoral. "Geologic Evolution of Conjugate margins: Pelotas Basin (Brazil) and Offshore Namibia (Africa); Implications for Global Sea Level Changes." (1998).

Joy M. Roth, Masters. "The Caribbean Carbonate Crash at the Middle to Late Miocene Transition and the Establishment of the Modern Global Thermohaline Circulation." (1998).

Andrei V. Belopolsky, Doctoral. "Tectonicand Eustatic Controls on the Evoution of the Maldive Carbonate Platform." (2000).

Carlos Elmer Ferro, Doctoral. "The Cenozoic Tectonostratigraphic Evolution of the Belize Margin, the Origin of the Belize Barrier Reef and Sequence Stratigraphy of the Late Quaternary Mixed Silicilastic-Carbonate System." (2001).

Lisa Oaks Fretwell, Ph.D. "Reconstructing the glacial history of Marguerite Bay, Antarctic Peninsula, since the Last Glacial Maximum: A combined geomorphologic and sedimentologic approach." (2005).(Committee Member)

Jessica Kneupper Maddox, M.S. "Holocene Evolution of the Matagorda/Lavaca Bay Complex, Central Texas Coast." (2005).(Committee Member)

Jason Michael Francis, Ph. D. "Late Quaternary Sediment Dispersal and Accumulation on Slopes of the." (2007).(Co-Director)

Brooke Elizabeth Carson, Ph. D. "LATE QUATERNARY SEDIMENT ACCUMULATIONS AND." (2007).(Co-Director)

Walter O'Hayer, Master's. "High Resolution Record of Millennial Time Scale Climate Oscillations in the Gulf of Mexico during the Penultimate Deglaciation." (2008).(Co-Director)

Evgueni N. Tcherepanov, Ph.D. "Cenozoic Evulation of the Mixed Carbonate-Silicilastic Depositional System in the Gulf of Papua, Papua New Guinea." (2008).(Thesis or Dissertation Director)

Evgueni N. Tcherepanov, Ph. D. "Cenozoic Evolution of the Mixed Carbonate-Siliciclastic Depositional System in the Gulf of Papua, Papua New Guinea." (2008).(Thesis or Dissertation Director)

Walter O'Hayer, Master's. "High Resolution Record of Millennial Time Scale Climate Oscillations in the Gulf of Mexico during the Penultimate Deglaciation." (2008).(Co-Director)

Carmen Fraticelli, "Member, Thesis Committee."

David Heroy, "Member, Thesis Committee."

Andre Klein, "Member, Thesis Committee."

Amanda Mosola, "Member, Thesis Committee."

Jaime Perez, "Member, Thesis Committee."

Andrei Belopolsky, "No Title."

Elmer Ferro, "No Title."

Michelle Shearer, "No Title."

Awards

2009 Papadopoulos Fellow, The Kinkaid School, Houston, TX, USA. (April 21, 2009).

Outreach Activities

External Professional Services iSSP Member Liaison to the Interim Planning Committee (iPC) iSSP Member Liaison to the Interim Pollution Prevention and Safety Panel (iPPSP)

External Professional Services Vail Symposium and Fest (March 6-9, 2002). Co Conveners: A. W. Droxler and Abreu V. The Symposium gathered about 350 geoscientists from Academic Institutions and Oil and Gas Exploration and Production Companies from all over the world.

External Professional Services Steering Committee Member for future GeoScan Workshop. Hosted meeting of the Steering Committee at Rice on October 18, 2002 (Oct. 2002)