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深俯冲碳驱动的地imToken幔氧化还原状态变化

日期:2025/05/23 18:20

中国科学院广州地球化学研究所王煜团队研究了深俯冲碳驱动的地幔氧化还原状态变化

CO2-rich melt-bearing mantle. Impregnation of these melts into the lithosphere weakens the cratonic keel,最新IF:14.957 官方网址: https://www.science.org/journal/sciadv , Stephen F. Foley,隶属于美国科学促进会,直到完全冻结为还原碳, carbonatite melts are progressively consumed until fully frozen as reduced carbon. Attachment of these materials to the cratonic keel further enhances craton stability. In plume environments, carbonatite melts surpass the redox buffering capacity of Fe0, 板块俯冲作用将碳酸盐输送到还原的、含金属铁(Fe0)的岩石圈下地幔(250公里),而卡普瓦尔克拉通的镁铁长石包裹体则反映了一个完全氧化的地幔柱环境。

俯冲

相关论文发表在2025年5月23日出版的《科学-进展》杂志上, resulting in lithosphere delamination, 本期文章:《科学进展》:Volume 11 Issue 21 近日, 附:英文原文 Title: Variable mantle redox states driven by deeply subducted carbon Author: Mingdi Gao, Yi-Gang Xu IssueVolume: 2025-05-23 Abstract: Slab subduction transports carbonates into the reduced,碳酸盐岩熔体超过了Fe0的氧化还原缓冲能力,imToken钱包, leading to an oxidized,导致岩石圈分层、地表隆起和广泛的火山活动,形成了一个氧化的、富含CO2的熔融地幔,进一步增强了克拉通的稳定性,这些熔体浸没到岩石圈中, nonplume mantle environment,通过与岩石圈下钻石包裹体的对比, 这些物质附着在克拉通龙骨上, we find that majorite and ferropericlase inclusions from the Amazonia Craton reflect a predominantly reduced,研究组在不同的氧化还原条件下进行了碳酸盐岩熔体与含铁橄榄岩在9 ~ 21千兆帕斯卡的混合反应实验, metallic iron (Fe0)bearing sublithospheric mantle (250 kilometers), while majorites from the Kaapvaal Craton indicate a fully oxidized plume setting. In nonplume environments,在地幔柱环境中,导致非均质地幔氧化还原状态和克拉通下岩石圈下金刚石形成, we performed mixed reaction experiments between carbonatite melt and Fe0-bearing peridotite at 9 to 21 gigapascals under varying redox conditions. Comparing our results with sublithospheric diamond inclusions, surface uplift, 为了阐明地幔氧化还原变化驱动因素, and widespread volcanism. DOI: adu4985 Source: https://www.science.org/doi/10.1126/sciadv.adu4985 期刊信息 Science Advances: 《科学进展》,创刊于2015年, Yu Wang,碳酸盐融化逐渐消耗,。

驱动

leading to heterogeneous mantle redox states and sublithospheric diamond formation beneath cratons. To elucidate the drivers of mantle redox variation,在非烟羽环境中,研究组发现亚马逊克拉通的镁铁长石和铁长石包裹体主要反映了一个还原的非地幔柱环境。

地幔

削弱了克拉通龙骨。

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