Rajdeep Dasgupta - Publications

Peer-reviewed Articles

Dasgupta, R., Jackson, M. G. & Lee, C-T. A. (in press). Major element chemistry of ocean island basalts - conditions of mantle melting and heterogeneity of mantle source. Earth and Planetary Science Letters.

Dasgupta, R., Buono, A., Whelan, G. & Walker, D. (2009). High-pressure melting relations in Fe-C-S systems: implications for formation, evolution, and structure of metallic cores in planetary bodies. Geochimica et Cosmochimica Acta 73, 6678-6691. doi:10.1016/j.gca.2009.08.001

Lord, O. T., Walter, M. J., Dasgupta, R., Walker, D. & Clark, S. M. (2009). Melting in the Fe-C system to 70 GPa. Earth and Planetary Science Letters 284, 157-167. doi:10.1016/j.epsl.2009.04.017

Dasgupta, R., Hirschmann, M. M., McDonough, W. F., Spiegelman, M. & Withers, A. C. (2009). Trace element partitioning between garnet lherzolite and carbonatite at 6.6 and 8.6 GPa with applications to the geochemistry of the mantle and of mantle-derived melts. Chemical Geology 262, 57-77. doi:10.1016/j.chemgeo.2009.02.004

Hirschmann, M. M. & Dasgupta, R. (2009). The H/C ratios of Earth’s near-surface and deep reservoirs, and consequences for deep Earth volatile cycles. Chemical Geology 262, 4-16. doi:10.1016/j.chemgeo.2009.02.008

Jackson, M. G. & Dasgupta, R. (2008). Compositions of HIMU, EM1, and EM2 from global trends between radiogenic isotopes and major elements in ocean island basalts. Earth and Planetary Science Letters 276, 175-186. doi:10.1016/j.epsl.2008.09.023

Dasgupta, R. & Walker, D. (2008). Carbon solubility in core melts in a shallow magma ocean environment and distribution of carbon between the Earth's core and the mantle. Geochimica et Cosmochimica Acta 72, 4627-4641. doi:10.1016/j.gca.2008.06.023

Dasgupta, R., Hirschmann, M. M. & Smith, N. D. (2007). Partial melting experiments of peridotite + CO₂ at 3 GPa and genesis of alkalic ocean island basalts. Journal of Petrology 48, 2093-2124. doi:10.1093/petrology/egm053

Dasgupta, R. & Hirschmann, M. M. (2007). A modified iterative sandwich method for determination of near-solidus partial melt compositions. II. Application to determination of near-solidus melt compositions of carbonated peridotite. Contributions to Mineralogy and Petrology 154, 647-661. doi:10.1007/s00410-007-0214-8

Hirschmann, M. M. & Dasgupta, R. (2007). A modified iterative sandwich method for determination of near-solidus partial melt compositions. I. Theoretical considerations. Contributions to Mineralogy and Petrology 154, 635-645. doi:10.1007/s00410-007-0213-9

Dasgupta, R., Hirschmann, M. M. & Smith, N. D. (2007). Water follows carbon: CO₂ incites deep silicate melting and dehydration beneath mid-ocean ridges. Geology 35, 135-138. doi:10.1130/G22856A.1

Dasgupta, R. & Hirschmann, M. M. (2007). Effect of variable carbonate concentration on the solidus of mantle peridotite. American Mineralogist 92, 370-379. doi:10.2138/am.2007.2201

Dasgupta, R. & Hirschmann, M. M. (2006). Melting in the Earth's deep upper mantle caused by carbon dioxide. Nature 440, 659-662. doi:10.1038/nature04612

Dasgupta, R., Hirschmann, M. M. & Stalker, K. (2006). Immiscible transition from carbonate-rich to silicate-rich melts in the 3 GPa melting interval of eclogite+CO₂ and genesis of silica-undersaturated ocean island lavas. Journal of Petrology 47, 647-671. doi:10.1093/petrology/egi088

Dasgupta, R., Hirschmann, M. M. & Dellas, N. (2005). The effect of bulk composition on the solidus of carbonated eclogite from partial melting experiments at 3 GPa. Contributions to Mineralogy and Petrology 149, 288-305. doi:10.1007/s00410-004-0649-0

Dasgupta, R., Hirschmann, M. M. & Withers, A. C. (2004). Deep global cycling of carbon constrained by the solidus of anhydrous, carbonated eclogite under upper mantle conditions. Earth and Planetary Science Letters 227, 73-85. doi:10.1016/j.epsl.2004.08.004

Edited Volume

Volatiles and volatile-bearing melts in the Earth's interior (2009). Dasgupta, R. and Dixon, J. E (Eds). Chemical Geology special volume 262, issue 1-2, pages 1-120.

Other articles and commentaries

Dasgupta, R. & Dixon, J. E. (2009). Volatiles and volatile-bearing melts in the Earth's interior (Ediotorial). Chemical Geology 262, 1-3. doi:10.1016/j.chemgeo.2009.04.006

Carbon's conductivity conundrum - Are carbonates responsible for high electrical conductivity in the mantle? EARTH Magazine interview by Brian Fisher Johnson on Gaillard et al. (2008)'s Science paper titled "Carbonatite Melts and Electrical Conductivity in the Asthenosphere". PDF

Extended Abstracts

Dasgupta, R.*, Whelan, G., Buono, A. & Walker, D. (2009). High pressure, near liquidus phase relations in Fe-C-S systems and implications for composition, structure, and processes of formation of metallic cores in planetary bodies. Lunar and Planetary Science XL, Abstract No. 2008.

Dasgupta, R.*, Withers, A. C. & Hirschmann, M. M. (2003). Generation of carbonatitic melt through partial melting of carbonated eclogite under mantle conditions (extended abstract). 4th EUROCARB Workshop, Canary Islands, Abstract Volume 16-18.

Conference Abstracts

Dasgupta, R.* (2009). Major element and volatile heterogeneity in the Earth’s mantle and generation of oceanic basalts. Geochimica et Cosmochimica Acta 73, A265. [KEYNOTE]

Dasgupta, R.* (2009). Volatile-induced metasomatic melting in terrestrial planets. Geochimica et Cosmochimica Acta 73, A265. [INVITED]

Dasgupta, R.*, Jackson, M. G. & Lee, C. T. A. (2008). Global systematics of major elements in OIBs - the relative contribution of source heterogeneity and conditions of melting. EOS Trans. AGU 89(53) Fall Meet. Suppl. V43F-2197.

Jackson, M. G.* & Dasgupta, R. (2008). Compositions of HIMU, EM1, and EM2 from global trends between radiogenic isotopes and major elements in ocean island basalts. EOS Trans. AGU 89(53) Fall Meet. Suppl. V41F-03.

Dasgupta, R.* & Jackson, M. G. (2008). Compositions of HIMU, EM1, and EM2 from global trends between radiogenic isotopes and major elements in ocean island basalts. AGU Chapman Lherzolite Conference, Mt. Shasta, CA.

Dasgupta, R.*, Hirschmann, M. M. McDonough, W. F., Spiegelman, M. & Withers, A. C. (2008). The role of minute carbonatitic melt in mantle geochemistry. AGU Chapman Lherzolite Conference, Mt. Shasta, CA.

Dasgupta, R.*, Whelan, G., Buono, A. & Walker, D. (2008). High-pressure melting relations in Fe-C-S systems: implications for metallic cores in planetary bodies. Geochimica et Cosmochimica Acta 72, A199. [INVITED]

Dasgupta, R.* & Walker, D. (2007). Carbon solubility in core melts in shallow magma ocean environment and its bearing on distribution of carbon between deep Earth reservoirs. EOS Trans. AGU 88(52) Fall Meet. Suppl. DI33A-1121.

Dasgupta, R.*, Withers, A. C., McDonough, W. F. & Hirschmann, M. M. (2007). Geochemical consequence of extraction of CO₂-rich melts from Earth's deep upper mantle. EOS Trans. AGU 88(52) Fall Meet. Suppl. U12A-06. [INVITED]

Hirschmann, M. M.* & Dasgupta, R. (2007). Carbonatite-mantle interaction in the formation of highly alkalic ocean island basalts. Geochimica et Cosmochimica Acta 71, A408.

Hirschmann, M. M.* & Dasgupta, R. (2006). Modified Iterative Sandwich Experiments (MISE) for determination of small-degree partial melt compositions: An example for carbonated peridotite at 6.6 GPa. EOS Trans. AGU 87(52) Fall Meet. Suppl. MR43C-1108.

Dasgupta, R.*, Hirschmann, M. M. & Smith, N. D. (2006). Carbonated silicate melting induced dehydration of mantle peridotite beneath mid-ocean ridges. EOS Trans. AGU 87(52) Fall Meet. Suppl. V54A-06.

Hirschmann, M. M.*, Dasgupta, R., Withers, A. C. & Aubaud, A. C. (2006). Volatiles and deep melting of the upper mantle. EMPG–XI Symposium Abstracts, 32.

Dasgupta, R.* & Hirschmann, M. M. (2006). Melting induced extraction of C-O-H volatiles at mid-ocean ridges. Geochimica et Cosmochimica Acta 70, A4. doi:10.1016/j.gca.2006.06.271. [INVITED]

Dasgupta, R.*, Hirschmann, M. M. & Withers, A. C. (2006). Earth’s deep carbon cycle constrained by partial melting of mantle peridotite and eclogite. EOS Trans. AGU 86(36) Jt. Assem. Suppl. V34A-01.

Dasgupta, R.*, Hirschmann, M. M. & Withers, A. C. (2005). Global cycling of carbon constrained by partial melting experiments of carbonated mantle peridotite and eclogite. EOS Trans. AGU 86(47) Fall Meet. Suppl. V51F-03.

Smith, N. D., Dasgupta, R.* & Hirschmann, M. M. (2005). Melting interval of natural carbonated lherzolite at 3 GPa and genesis of alkalic OIBs. EOS Trans. AGU 86(47) Fall Meet. Suppl. MR13A-0078.

Hirschmann, M. M. & Dasgupta, R.* (2005). Effect of variable carbonate concentration on the solidus of mantle peridotite. EOS Trans. AGU 86(47) Fall Meet. Suppl. V41A-1418.

Dasgupta, R.*, Hirschmann, M. M. & Withers, A. C. (2005). Near-solidus melt compositions from natural carbonated lherzolite. Geochimica et Cosmochimica Acta 69, A101.

Dasgupta, R.*, Stalker, K. & Hirschmann, M. M. (2004). Immiscible transition from carbonate-rich to silicate-rich melts in eclogite+CO₂ and genesis of ocean island melilitite. EOS Trans. AGU 85(47) Fall Meet. Suppl. F1855, V31C-1444.

Dasgupta, R., Stalker, K., Withers, A. C.* & Hirschmann, M. M. (2004). The transition from carbonate-rich to silicate-rich melts in eclogite: partial melting experiments of carbonated eclogite at 3 GPa. EMPG–X Symposium Abstracts, Lithos 73, S23.

Dasgupta, R.*, Withers, A. C. & Hirschmann, M. M. (2003). Stability of carbonated eclogite in the upper mantle: Experimental solidus from 2 to 9 GPa. EOS Trans. AGU 84(47) Fall Meet. Suppl. F1603, V42E-06.

Dellas, N., Dasgupta, R.* & Hirschmann, M. M. (2003). The effect of carbonate composition and concentration on the solidus of carbonated eclogite: An experimental study at 3 GPa. EOS Trans. AGU 84(47) Fall Meet. Suppl. F1495, V12C-0604.

* designates presenter

as of November 13, 2009