globalchange  > 气候变化与战略
DOI: 10.1016/j.epsl.2020.116705
论文题名:
Isotopic signatures as tools to reconstruct the primordial architecture of the Solar System
作者: Render J.; Brennecka G.A.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2021
卷: 555
语种: 英语
中文关键词: 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
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165644
Appears in Collections:气候变化与战略

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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

Recommended Citation:
Render J.,Brennecka G.A.. Isotopic signatures as tools to reconstruct the primordial architecture of the Solar System[J]. Earth and Planetary Science Letters,2021-01-01,555
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