Redistribution of Sr and rare earth elements in the matrices of CV3 carbonaceous chondrites during aqueous alteration in their parent body
作者： Kaori Jogo , Motoo Ito , Tomoki Nakamura , Sachio Kobayashi , Jong Ik Lee
DOI: 10.1186/S40623-018-0809-5
关键词: Matrix (mathematics) 、 Parent body 、 Analytical chemistry 、 Rare-earth element 、 Massif 、 Formation and evolution of the Solar System 、 Meteorite 、 Chondrite 、 Aqueous solution
摘要: We measured the abundances of Sr and rare earth elements (REEs) in matrices five CV3 carbonaceous chondrites: Meteorite Hills (MET) 00430, MET 01070, La Paz ice field (LAP) 02206, Asuka (A) 881317 Roberts Massif (RBT) 04143. In 00430 01074 matrices, Sr/CI light REE (LREE, La–Nd)/CI ratios positively correlate with amounts Ca-rich secondary minerals, which formed during aqueous alteration chondrite parent body. contrast, LAP 02206 RBT 04143 although LREE/CI vary independently from any minerals. This suggests that these were produced prior to body alteration, probably solar nebula. The reveal mixing process matrix minerals accretion degrees might be different between two matrices. Because solid materials would mixed over time according radial diffusion model a turbulent disk, consisting incorporated into their timing.
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