Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1907592116 |
A unifying model for the accretion of chondrules and matrix | |
van Kooten, Elishevah M. M. E.1; Moynier, Frederic1; Agranier, Arnaud2 | |
2019 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2019 |
卷号 | 116期号:38页码:18860-18866 |
文章类型 | Article |
语种 | 英语 |
国家 | France |
英文摘要 | The so far unique role of our Solar System in the universe regarding its capacity for life raises fundamental questions about its formation history relative to exoplanetary systems. Central in this research is the accretion of asteroids and planets from a gas-rich circumstellar disk and the final distribution of their mass around the Sun. The key building blocks of the planets may be represented by chondrules, the main constituents of chondritic meteorites, which in turn are primitive fragments of planetary bodies. Chondrule formation mechanisms, as well as their subsequent storage and transport in the disk, are still poorly understood, and their origin and evolution can be probed through their link (i.e., complementary or noncomplementary) to fine-grained dust (matrix) that accreted together with chondrules. Here, we investigate the apparent chondrule-matrix complementarity by analyzing major, minor, and trace element compositions of chondrules and matrix in altered and relatively unaltered CV, CM, and CR (Vigarano-type, Mighei-type, and Renazzo-type) chondrites. We show that matrices of the most unaltered CM and CV chondrites are overall Cl-like (Ivuna-type) (similar to solar composition) and do not reflect any volatile enrichment or elemental patterns complementary to chondrules, the exception being their Fe/Mg ratios. We propose to unify these contradictory data by invoking a chondrule formation model in which Cl-like dust accreted to so-called armored chondrules, which are ubiquitous in many chondrites. Metal rims expelled during chondrule formation, but still attached to their host chondrule, interacted with the accreted matrix, thereby enriching the matrix in siderophile elements and generating an apparent complementarity. |
英文关键词 | complementarity chondrules secondary alteration LA-ICPMS |
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:000486388400024 |
WOS关键词 | EARLY SOLAR-SYSTEM ; CARBONACEOUS CHONDRITES ; ISOTOPIC EVIDENCE ; CONSTRAINTS ; ORIGIN ; METAL ; CV |
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/205176 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Paris, CNRS, UMR 7154, Inst Phys Globe Paris, F-75238 Paris, France; 2.Univ Bretagne Occidentale, Inst Univ Europeen Mer, CNRS, Lab Domaines Ocean,UMR 6538, Technopole Brest Iroise, F-29280 Plouzane, France |
推荐引用方式 GB/T 7714 | van Kooten, Elishevah M. M. E.,Moynier, Frederic,Agranier, Arnaud. A unifying model for the accretion of chondrules and matrix[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2019,116(38):18860-18866. |
APA | van Kooten, Elishevah M. M. E.,Moynier, Frederic,&Agranier, Arnaud.(2019).A unifying model for the accretion of chondrules and matrix.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,116(38),18860-18866. |
MLA | van Kooten, Elishevah M. M. E.,et al."A unifying model for the accretion of chondrules and matrix".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 116.38(2019):18860-18866. |
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