低温蚀变洋壳钾同位素组成及其对全球钾循环的影响

Goldschmidt Abstracts Pub Date : 2021-08-08 DOI:10.46427/gold2020.1585

Haiyang Liu, Ying-Yu Xue, Guoliang Zhang, Weidongsun Sun, Z. Tian, Brenna Tuller-Ross, Kun Wang

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引用次数: 19

摘要

为了限制海洋地壳低温蚀变过程中K同位素的行为，揭示其对全球K循环的影响，我们测量了来自南太平洋综合海洋钻探计划(IODP) U1365 (~ 100 Ma)和U1368 (~ 13.5 Ma)地点的49块新鲜和蚀变玄武岩的K同位素组成。所测得的玄武岩代表了最上层的海洋地壳，经受了低温(

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Potassium Isotopic Composition of Low-Temperature Altered Oceanic Crust and its Impact on the Global K Cycle

Abstract To constrain the behavior of K isotopes during the low-temperature alteration of oceanic crust and reveal its impact on the global K cycle, we measured the K isotopic compositions of 49 fresh and altered basalts recovered from the Integrated Ocean Drilling Program (IODP) Sites U1365 (∼100 Ma) and U1368 (∼13.5 Ma) in the South Pacific Ocean. The measured basalts representing the uppermost oceanic crust have been subjected to low-temperature (

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