Melting of the Fe‐C‐H System and Earth's Deep Carbon‐Hydrogen Cycle
Melting of the Fe‐C‐H System and Earth's Deep Carbon‐Hydrogen Cycle
复制标题
Fe-C-H系统的熔化和地球深层碳-氢循环
DOI:
10.1029/2022gl098919
复制
发表时间:
2022
影响因子:
5.2
通讯作者:
Chen, Bin
中科院分区:
文献类型:
--
作者:
Lai, Xiaojing;Zhu, Feng;Gao, Jing;Greenberg, Eran;Prakapenka, Vitali B.;Meng, Yue;Chen, Bin
The occurrences and cycling of slab‐originated carbon and hydrogen are considered to be controlled by their reactions with metallic iron from mantle disproportionation and slab serpentinization, to form Fe alloys containing carbon and hydrogen. Here we show experimental results on the phase relations and melting of the Fe‐C‐H system using laser‐heated diamond anvil cell and X‐ray diffraction techniques up to 72 GPa. The incorporation of hydrogen was found to lower the eutectic melting temperatures of Fe‐C alloy by ∼50–178 K at 20–70 GPa, facilitating the formation of metallic liquids in the deep mantle and thus enhancing the mobility and deep cycling of subducted carbon and hydrogen. Hydrogen also substitutes with carbon in Fe‐C metal to form hydride and diamond at relatively high‐temperature conditions (e.g., 42.6 GPa, >1885 K and 71.8 GPa, >1798 K). The hydrogen‐carbon‐enriched metallic liquids provide the necessary fluid environment for superdeep diamond growth.
登录
查看更多内容
影响因子:
2.5
作者:
A. Serovaiskii;E. Mukhina;L. Dubrovinsky;Aleksey Chernoutsan;D. Kudryavtsev;C. McCammon;G. Aprilis;I. Kupenko;A. Chumakov;M. Hanfland;V. Kutcherov
通讯作者:
V. Kutcherov
影响因子:
5
作者:
K. Tsuno;D. Grewal;R. Dasgupta
通讯作者:
K. Tsuno;D. Grewal;R. Dasgupta
影响因子:
2.5
作者:
Jing Yang;Y. Fei;Xiaojun Hu;E. Greenberg;V. Prakapenka
通讯作者:
Jing Yang;Y. Fei;Xiaojun Hu;E. Greenberg;V. Prakapenka
影响因子:
5.3
作者:
Fei, Yingwei;Brosh, Eli
通讯作者:
Brosh, Eli
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
通讯作者:
--