Zobrazeno 1 - 10 of 141 pro vyhledávání: '"Marc M. Hirschmann"'
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Iron-wüstite revisited: A revised calibration accounting for variable stoichiometry and the effects of pressure
Autor: Marc M. Hirschmann
Publikováno v: Geochimica et Cosmochimica Acta. 313:74-84
We present thermodynamic and empirical calculations for the iron-wustite (IW) buffer applicable from 100 kPa to 100 GPa and from 1000 to 3000 K. The thermodynamic calculation self-consistently accounts for changing stoichiometry of iron-saturated wus
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9a9485dde25df50aed2898a9ad4a9c6d
https://doi.org/10.1016/j.gca.2021.08.039
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3
Raman spectroscopy study of C-O-H-N speciation in reduced basaltic glasses: Implications for reduced planetary mantles
Autor: Celia Dalou, Marc M. Hirschmann, Charles Le Losq, Steven D. Jacobsen
Publikováno v: Geochimica et Cosmochimica Acta. 265:32-47
To better understand the solution of volatile species in a reduced magma ocean, we identify via Raman spectroscopy the nature of C-O-H-N volatile species dissolved in a series of reduced basaltic glasses. The oxygen fugacity (ƒO2) during synthesis v
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::414aa9dda852e87ad1a38ca8e27bfbfb
https://doi.org/10.1016/j.gca.2019.08.029
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4
Carbon storage in Fe-Ni-S liquids in the deep upper mantle and its relation to diamond and Fe-Ni alloy precipitation
Autor: Marc M. Hirschmann, Zhou Zhang, Anne Pommier, Tian Qin
Publikováno v: Earth and Planetary Science Letters. 520:164-174
To better understand the role of sulfide in C storage in the upper mantle, we construct a thermodynamic model for Fe-Ni-S-C sulfide melts and consider equilibrium between sulfide melts, mantle silicates, Fe-Ni alloy, and diamond. The sulfide melt mod
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::74b907fca21ae85dc9d66361b7fca8c6
https://doi.org/10.1016/j.epsl.2019.05.039
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5
'Earth Cousins' Are New Targets for Planetary Materials Research
Autor: Razvan Caracas, Edwin S. Kite, Marc M. Hirschmann, Laura Kreidberg, Laura Schaefer
Publikováno v: Eos, Transactions American Geophysical Union
Eos, Transactions American Geophysical Union, American Geophysical Union (AGU), 2021, 102, ⟨10.1029/2021EO159473⟩
Eos, Transactions American Geophysical Union, 2021, 102, ⟨10.1029/2021EO159473⟩
International audience; “Cousin” worlds—slightly bigger or slightly hotter than Earth—can help us understand planetary habitability, but we need more lab and numerical experiments to make the most of this opportunity.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ebf7e13be5414bca443fd2a0cc4846fd
https://hal.archives-ouvertes.fr/hal-03408627
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6
Early volatile depletion on planetesimals inferred from C-S systematics of iron meteorite parent bodies
Autor: Jie Li, Edwin A. Bergin, Fred J. Ciesla, G. A. Blake, Marc M. Hirschmann
Publikováno v: Proceedings of the National Academy of Sciences of the United States of America
During the formation of terrestrial planets, volatile loss may occur through nebular processing, planetesimal differentiation, and planetary accretion. We investigate iron meteorites as an archive of volatile loss during planetesimal processing. The
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15694bf056458da79c1ec8e34d62a316
http://arxiv.org/abs/2104.02706
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10
Earth's carbon deficit caused by early loss through irreversible sublimation
Autor: Marc M. Hirschmann, Fred J. Ciesla, Geoffrey A. Blake, Jie Li, Edwin A. Bergin
Publikováno v: Science advances. 7(14)
Carbon is an essential element for life but its behavior during Earth's accretion is not well understood. Carbonaceous grains in meteoritic and cometary materials suggest that irreversible sublimation, and not condensation, governs carbon acquisition
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6de63903a1c9d58dd245b8d743c673bd
https://pubmed.ncbi.nlm.nih.gov/33811069
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