Early Earth and Deep Time

Grewal et al., 2019 GCA

Grewal, D.S.*, Dasgupta, R., Homes, A.+, Costin, G., Li, Y.^, Tsuno, K.^ (2019). The fate of nitrogen during core-mantle separation on Earth. Geochimica et Cosmochimica Acta 251: 87-115. doi:10.1016/j.gca.2019.02.009

Fuentes et al., 2019 EPSL

Fuentes, J., Crowley, J., Dasgupta, R., Mitrovica, J. (2019). The influence of plate tectonic style on melt production and CO2 outgassing flux at mid-ocean ridges. Earth and Planetary Science Letters 511: 154-163. doi:10.1016/j.epsl.2019.01.020

Grewal et al., 2019 Sci Adv

Grewal, D.S.*, Dasgupta, R., Sun, C.^, Tsuno, K.^, Costin, G. (2019). Delivery of carbon, nitrogen, and sulfur to the silicate Earth by a giant impact. Science Advances 5: eaau3669. doi: 10.1126/sciadv.aau3669

Lee et al., 2019 CUP

Lee, C-T. A., Jiang, H., Dasgupta, R. & Torres, M. (accepted). A framework for understanding whole Earth carbon cycling. In Orcutt, B., Daniel, I., and Dasgupta, R. (Eds.) Deep Carbon: Past to Present. Cambridge University Press.

Tsuno et al., 2018 GCA

Tsuno, K.^, Grewal, D.S.*, Dasgupta, R. (2018). Core-mantle fractionation of carbon in Earth and Mars: The effects of sulfur. Geochimica et Cosmochimica Acta 238: 477-495. doi: 10.1016/j.gca.2018.07.010

Carter & Dasgupta, 2018 CG

Carter, L.B.* & Dasgupta, R. (2018). Decarbonation in the Ca-Mg-Fe carbonate system at mid-crustal pressure as a function of temperature and assimilation with arc magmas – Implications for long-term climate. Chemical Geology 492: 30-48. doi:10.1016/j.chemgeo.2018.05.024

Saha et al., 2018 G-Cubed

Saha, S.*Dasgupta, R.Tsuno, K.^ (2018). High pressure-temperature phase relations of a depleted peridotite fluxed by CO2-H2O-bearing siliceous melts and the origin of mid-lithospheric discontinuity. Geochemistry, Geophysics, Geosystems 19 (3): 595-620. doi:10.1002/2017GC007233

Li et al., 2017 JGR

Li, Y.^, Dasgupta, R. & Tsuno, K.^ (2017). Carbon contents in reduced basalts at graphite saturation: Implications for the degassing of Mars, Mercury, and the Moon. Journal of Geophysical Research - Planets 122, doi:10.1002/2017JE005289.

Duncan et al., 2017 EPSL

Duncan, M. S.*, Dasgupta, R.Tsuno, K.^ (2017). Experimental determination of CO2 content at graphite saturation along a natural basalt-peridotite melt join: Implications for the fate of carbon in terrestrial magma oceans. Earth and Planetary Science Letters 466, 115-128. doi:10.1016/j.epsl.2017.03.008

Duncan & Dasgupta, 2017 Nature Geoscience

Duncan, M. S.* & Dasgupta, R. (2017). Rise of Earth's atmospheric oxygen controlled by efficient subduction of organic carbon. Nature Geoscience 10, 387-392. doi:10.1038/NGEO2939

Ding & Dasgupta, 2017 EPSL

Ding, S.* & Dasgupta, R. (2017). The fate of sulfide during decompression melting of peridotite – implications for sulfur inventory of the MORB-source depleted upper mantle. Earth and Planetary Science Letters 459, 183-195. doi:10.1016/j.epsl.2016.11.020

Carter & Dasgupta, 2016 G-Cubed

Carter, L. B.* & Dasgupta, R. (2016). Effect of melt composition on crustal carbonate assimilation – Implications for the transition from calcite consumption to skarnification and associated CO2 degassing. Geochemistry, Geophysics, Geosystems 17, 3893-3916. doi:10.1002/2016GC006444

Li et al., 2016 Nature

Li, Y.^, Dasgupta, R.Tsuno, K.^, Monteleone, B. & Shimizu, N. (2016). Carbon and sulfur budget of the silicate Earth explained by accretion of differentiated planetary embryos. Nature Geoscience 9, 781-785. doi:10.1038/ngeo2801

Carter & Dasgupta, 2015 EPSL

Carter, L. B.* & Dasgupta, R. (2015). Hydrous basalt-limestone interaction at crustal conditions: implications for generation of ultracalcic melts and outflux of CO2 at volcanic arcs. Earth and Planetary Science Letters 427, 202-214. doi:10.1016/j.epsl.2015.06.053

Li et al., 2015 EPSL

Li, Y.^, Dasgupta, R. & Tsuno, K.^ (2015). The effects of sulfur, silicon, water, and oxygen fugacity on carbon solubility and partitioning in Fe-rich alloy melt-silicate melt systems at 3 GPa and 1600 °C – Implications for core-mantle differentiation and degassing of magma oceans and reduced planetary mantles. Earth and Planetary Science Letters 415, 54-66. doi:10.1016/j.epsl.2015.01.017

Chi et al., 2014 GCA

Chi, H.*, Dasgupta, R., Duncan, M. S.* & Shimizu, N. (2014). Partitioning of carbon between Fe-rich alloy melt and silicate melt in a magma ocean – implications for the abundance and origin of volatiles in Earth, Mars, and the Moon. Geochimica et Cosmochimica Acta 139, 447-471. doi:10.1016/j.gca.2014.04.046

Lee et al., 2013 Geosphere

Lee, C-T. A., Shen, B., Slotnik, B. S., Liao, K., Dickens, G. R., Yokoyama, Y., Lenardic, A., Dasgupta, R., Jellinek, M., Lackey, J., Schneider, T. & Tice, M. (2013). Continent-island arc fluctuations, growth of crustal carbonates, and long-term climate change. Geosphere 9, 21-36. doi:10.1130/GES00822.1

Dasgupta et al., 2013 GCA

Dasgupta, R., Chi, H.*, Shimizu, N., Buono, A. & Walker, D. (2013). Carbon solution and partitioning between metallic and silicate melts in a shallow magma ocean: implications for the origin and distribution of terrestrial carbon. Geochimica et Cosmochimica Acta 102, 191-202. doi:10.1016/j.gca.2012.10.011