气候变化领域集成服务门户(CCPortal): Isotopic signatures as tools to reconstruct the primordial architecture of the Solar System

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DOI	10.1016/j.epsl.2020.116705
	Isotopic signatures as tools to reconstruct the primordial architecture of the Solar System
	Render J.; Brennecka G.A.
发表日期	2021
ISSN	0012821X
卷号	555
英文摘要	The significant reorganization of the early Solar System due to giant planet migration has hampered our understanding of where planetary bodies formed. Previously employed proxies for reconstructing the primordial planetary architecture, such as water content or oxidation state, are complicated by post-accretionary processes. Here we investigate basaltic achondrites for their nucleosynthetic isotope signatures in the elements neodymium (Nd) and zirconium (Zr) and show that they are—similar to previously investigated chondritic meteorites—characterized by a relative deficit in isotopes produced by the s-process of nucleosynthesis. Importantly, these data are well correlated with nucleosynthetic signatures observed in other elements, demonstrating that s-process matter was heterogeneously distributed throughout the early Solar System. By comparing these isotopic signatures with potential proxies for Solar System reconstruction and computer modeling, we here argue that this isotopic heterogeneity in bulk meteoritic materials is linked to the original heliocentric distance of formation. Such scaling of nucleosynthetic signatures with heliocentric distance could permit reconstruction of the primordial architecture of the Solar System by ‘cosmolocating’ the accretion orbits of meteoritic parent bodies as a function of incorporated s-process matter. © 2020 Elsevier B.V.
关键词	achondrites early Solar System neodymium nucleosynthetic anomalies zirconium
英文关键词	Computer architecture; Isotopes; Meteorites; Nucleosynthesis; Orbits; Chondritic meteorites; Computer modeling; Early solar systems; Giant planet migrations; Heliocentric distances; Isotope signatures; Isotopic signatures; System reconstruction; Earth (planet); achondrite; chondrite; neodymium isotope; reconstruction; solar system; zirconium; Trachinotus falcatus
语种	英语
来源期刊	Earth and Planetary Science Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/203266
作者单位	Institut für Planetologie, University of Münster, Wilhelm-Klemm-Straße 10, Münster, 48149, Germany; Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA, United States
推荐引用方式 GB/T 7714	Render J.,Brennecka G.A.. Isotopic signatures as tools to reconstruct the primordial architecture of the Solar System[J],2021,555.
APA	Render J.,&Brennecka G.A..(2021).Isotopic signatures as tools to reconstruct the primordial architecture of the Solar System.Earth and Planetary Science Letters,555.
MLA	Render J.,et al."Isotopic signatures as tools to reconstruct the primordial architecture of the Solar System".Earth and Planetary Science Letters 555(2021).