A comment on "Experimental determination of carbon isotope fractionation between iron carbide melt and carbon: 12C-enriched carbon in the Earth's core?" by M. Satish-Kumar, H. So, T. Yoshino, M. Kato, Y. Hiroi [Earth Planet. Sci. Lett. 310 (2011) 340-348]

被引：3

作者：

Reutsky, V. N. ^{[1
]}

Borzdov, Yu. M. ^{[1
]}

机构：

[1] Sobolev Inst Geol & Mineral SB RAS, Novosibirsk 630090, Russia

来源：

EARTH AND PLANETARY SCIENCE LETTERS | 2013年 / 368卷

关键词：

carbon isotopes; carbon solution in metal melt; isotope fractionation; experiment; high pressure; high temperature; DIAMOND CRYSTAL-GROWTH; SYNTHETIC DIAMOND; HIGH-PRESSURE; C SYSTEM; MANTLE; GPA;

D O I：

10.1016/j.epsl.2013.03.028

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Accounting for the behavior of metastable and stable phases in the Fe-C system at HPHT allows a reconsideration of the results of Satish-Kumar et al. (2011). The occurrence of a metastable Fe-Gr eutectic explains the "lowering of the phase boundaries" as well as the presence of melt in experiments below the Fe-Fe3C eutectic temperature. Overall, the data reported evidence for graphite interaction with carbon dissolved in the iron melt which does not represent an "iron carbide melt". The results are in good agreement with previously published data on carbon isotope effect between crystalline carbon and carbon solution in metal melt. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：219 / 221

页数：3