Generation of methane in the Earth's mantle: in situ high pressure-temperature measurements of carbonate reduction

Proceedings of the National Academy of Sciences of the United States of America
Henry P ScottSorin Bastea

Abstract

We present in situ observations of hydrocarbon formation via carbonate reduction at upper mantle pressures and temperatures. Methane was formed from FeO, CaCO(3)-calcite, and water at pressures between 5 and 11 GPa and temperatures ranging from 500 degrees C to 1,500 degrees C. The results are shown to be consistent with multiphase thermodynamic calculations based on the statistical mechanics of soft particle mixtures. The study demonstrates the existence of abiogenic pathways for the formation of hydrocarbons in the Earth's interior and suggests that the hydrocarbon budget of the bulk Earth may be larger than conventionally assumed.

References

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Citations

Feb 10, 2011·Nature Communications·Mal-Soon Lee, Sandro Scandolo
Sep 8, 2011·The Journal of Chemical Physics·Sorin Bastea
Dec 23, 2016·Journal of Chemical Theory and Computation·Lucas KoziolNir Goldman
May 10, 2008·The Journal of Chemical Physics·Sorin Bastea, Laurence E Fried
Aug 5, 2017·Astrobiology·Dorothy Z Oehler, Giuseppe Etiope
Apr 14, 2005·Angewandte Chemie·Hermann Weingärtner, Ernst Ulrich Franck
Jun 7, 2006·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Thomas Cavalier-Smith
Jun 13, 2017·Nature Communications·Fang HuangDimitri A Sverjensky
Jul 20, 2017·Scientific Reports·E MukhinaV Kutcherov
Jun 1, 2019·Science Advances·Michael W FörsterStephan Buhre
Nov 23, 2016·Reports on Progress in Physics·Guoyin Shen, Ho Kwang Mao
Jul 5, 2017·Proceedings of the National Academy of Sciences of the United States of America·Daniel R ColmanJohn R Spear
Mar 14, 2020·Scientific Reports·Aleksandr Serovaiskii, Vladimir Kutcherov
Dec 16, 2020·The Journal of Chemical Physics·Cong Huy PhamNir Goldman
Apr 1, 2021·Nature Communications·Umbertoluca RanieriLivia E Bove

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