Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1919930117 |
The carbon content of Earth and its core | |
Fischer, Rebecca A.1,2,3; Cottrell, Elizabeth2; Hauri, Erik4; Lee, Kanani K. M.5,6; Le Voyer, Marion2 | |
2020-04-21 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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ISSN | 0027-8424 |
出版年 | 2020 |
卷号 | 117期号:16页码:8743-8749 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Earth's core is likely the largest reservoir of carbon (C) in the planet, but its C abundance has been poorly constrained because measurements of carbon's preference for core versus mantle materials at the pressures and temperatures of core formation are lacking. Using metal-silicate partitioning experiments in a laser-heated diamond anvil cell, we show that carbon becomes significantly less siderophile as pressures and temperatures increase to those expected in a deep magma ocean during formation of Earth's core. Based on a multistage model of core formation, the core likely contains a maximum of 0.09(4) to 0.20(10) wt% C, making carbon a negligible contributor to the core's composition and density. However, this accounts for similar to 80 to 90% of Earth's overall carbon inventory, which totals 370(150) to 740(370) ppm. The bulk Earth's carbon/sulfur ratio is best explained by the delivery of most of Earth's volatiles from carbonaceous chondrite-like precursors. |
英文关键词 | carbon metal-silicate partitioning core formation light elements |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000528260600017 |
WOS关键词 | FE-RICH ALLOY ; MAGMA OCEAN ; SILICATE MELT ; VOLATILES ; SOLUBILITY ; ACCRETION ; EVOLUTION ; SULFUR ; DIFFERENTIATION ; FRACTIONATION |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/249546 |
专题 | 地球科学 |
作者单位 | 1.Harvard Univ, Dept Earth & Planetary Sci, 20 Oxford St, Cambridge, MA 02138 USA; 2.Smithsonian Inst, Natl Museum Nat Hist, Dept Mineral Sci, Washington, DC 20560 USA; 3.Univ Calif Santa Cruz, Dept Earth & Planetary Sci, Santa Cruz, CA 95064 USA; 4.Carnegie Inst Sci, Dept Terr Magnetism, Washington, DC 20015 USA; 5.Yale Univ, Dept Geol & Geophys, POB 6666, New Haven, CT 06511 USA; 6.Lawrence Livermore Natl Lab, Phys Div, Livermore, CA 94550 USA |
推荐引用方式 GB/T 7714 | Fischer, Rebecca A.,Cottrell, Elizabeth,Hauri, Erik,et al. The carbon content of Earth and its core[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2020,117(16):8743-8749. |
APA | Fischer, Rebecca A.,Cottrell, Elizabeth,Hauri, Erik,Lee, Kanani K. M.,&Le Voyer, Marion.(2020).The carbon content of Earth and its core.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,117(16),8743-8749. |
MLA | Fischer, Rebecca A.,et al."The carbon content of Earth and its core".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 117.16(2020):8743-8749. |
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