Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.2005235117 |
Chondrules reveal large-scale outward transport of inner Solar System materials in the protoplanetary disk | |
Curtis D. Williams; Matthew E. Sanborn; Céline Defouilloy; Qing-Zhu Yin; Noriko T. Kita; Denton S. Ebel; Akane Yamakawa; Katsuyuki Yamashita | |
2020-09-08 | |
发表期刊 | Proceedings of the National Academy of Science |
出版年 | 2020 |
英文摘要 | Dynamic models of the protoplanetary disk indicate there should be large-scale material transport in and out of the inner Solar System, but direct evidence for such transport is scarce. Here we show that the ε50Ti-ε54Cr-Δ17O systematics of large individual chondrules, which typically formed 2 to 3 My after the formation of the first solids in the Solar System, indicate certain meteorites (CV and CK chondrites) that formed in the outer Solar System accreted an assortment of both inner and outer Solar System materials, as well as material previously unidentified through the analysis of bulk meteorites. Mixing with primordial refractory components reveals a “missing reservoir” that bridges the gap between inner and outer Solar System materials. We also observe chondrules with positive ε50Ti and ε54Cr plot with a constant offset below the primitive chondrule mineral line (PCM), indicating that they are on the slope ∼1.0 in the oxygen three-isotope diagram. In contrast, chondrules with negative ε50Ti and ε54Cr increasingly deviate above from PCM line with increasing δ18O, suggesting that they are on a mixing trend with an ordinary chondrite-like isotope reservoir. Furthermore, the Δ17O-Mg# systematics of these chondrules indicate they formed in environments characterized by distinct abundances of dust and H2O ice. We posit that large-scale outward transport of nominally inner Solar System materials most likely occurred along the midplane associated with a viscously evolving disk and that CV and CK chondrules formed in local regions of enhanced gas pressure and dust density created by the formation of Jupiter. |
领域 | 地球科学 |
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/294048 |
专题 | 地球科学 |
推荐引用方式 GB/T 7714 | Curtis D. Williams,Matthew E. Sanborn,Céline Defouilloy,et al. Chondrules reveal large-scale outward transport of inner Solar System materials in the protoplanetary disk[J]. Proceedings of the National Academy of Science,2020. |
APA | Curtis D. Williams.,Matthew E. Sanborn.,Céline Defouilloy.,Qing-Zhu Yin.,Noriko T. Kita.,...&Katsuyuki Yamashita.(2020).Chondrules reveal large-scale outward transport of inner Solar System materials in the protoplanetary disk.Proceedings of the National Academy of Science. |
MLA | Curtis D. Williams,et al."Chondrules reveal large-scale outward transport of inner Solar System materials in the protoplanetary disk".Proceedings of the National Academy of Science (2020). |
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