Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41561-019-0375-x |
Earth's volatile element depletion pattern inherited from a carbonaceous chondrite-like source | |
Braukmueller, Ninja1,2; Wombacher, Frank1,2; Funk, Claudia1,2; Muenker, Carsten1,2 | |
2019-07-01 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2019 |
卷号 | 12期号:7页码:564-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Germany |
英文摘要 | Earth's volatile element abundances (for example, sulfur, zinc, indium and lead) provide constraints on fundamental processes, such as planetary accretion, differentiation and the delivery of volatile species, like water, which contributed to Earth becoming a habitable planet. The composition of the silicate Earth suggests a chemical affinity but isotopic disparity to carbonaceous chondrites-meteorites that record the early element fractionations in the protoplanetary disk. However, the volatile element depletion pattern of the silicate Earth is obscured by core formation. Another key problem is the overabundance of indium, which could not be reconciled with any known chondrite group. Here we complement recently published volatile element abundances for carbonaceous chondrites with high-precision sulfur, selenium and tellurium data. We show that both Earth and carbonaceous chondrites exhibit a unique hockey stick volatile element depletion pattern in which volatile elements with low condensation temperatures (750-500 K) are unfractionated from each other. This abundance plateau accounts for the apparent overabundance of indium in the silicate Earth without the need of exotic building materials or vaporization from precursors or during the Moon-forming impact and suggests the accretion of 10-15 wt% CI-like material before core formation ceased. Finally, more accurate estimates of volatile element abundances in the core and bulk Earth can now be provided. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000473104300015 |
WOS关键词 | TRACE-ELEMENTS ; CHEMICAL-COMPOSITION ; CORE FORMATION ; PRIMITIVE METEORITES ; SIDEROPHILE ELEMENTS ; ISOTOPIC COMPOSITION ; ACCRETION ; SELENIUM ; ORIGIN ; MANTLE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/184810 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Univ Cologne, Inst Geol & Mineral, Cologne, Germany; 2.Univ Bonn, Steinmann Inst Geol Mineral & Palaontol, Bonn, Germany |
推荐引用方式 GB/T 7714 | Braukmueller, Ninja,Wombacher, Frank,Funk, Claudia,et al. Earth's volatile element depletion pattern inherited from a carbonaceous chondrite-like source[J]. NATURE GEOSCIENCE,2019,12(7):564-+. |
APA | Braukmueller, Ninja,Wombacher, Frank,Funk, Claudia,&Muenker, Carsten.(2019).Earth's volatile element depletion pattern inherited from a carbonaceous chondrite-like source.NATURE GEOSCIENCE,12(7),564-+. |
MLA | Braukmueller, Ninja,et al."Earth's volatile element depletion pattern inherited from a carbonaceous chondrite-like source".NATURE GEOSCIENCE 12.7(2019):564-+. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论