Permian thermal pulse event in Southwestern China and its resource and environment effects

IF 4 1区地球科学 Q1 GEOGRAPHY, PHYSICAL

Global and Planetary Change Pub Date : 2025-01-21 DOI:10.1016/j.gloplacha.2025.104722

Qianqian Feng, Nansheng Qiu, Xiongdong Fu, Tenger Borjigin, Qingyong Luo, Chuanqing Zhu

引用次数: 0

Abstract

The Emeishan large igneous province (LIP) in Southwestern China and Northern Vietnam is thought to have been a potential driver for the biotic crises and paleoclimatic changes at the Guadalupian-Lopingian boundary (GLB; Permian). Here, we revealed the thermal pulse event induced by the Emeishan LIP and its impact on the fossil energy formation and episodic carbon changes. Southwestern China experienced a pulsating high thermal anomaly lasting 10 Myrs in the mid-Permian, which accelerated the maturation of source rocks, producing mass high-temperature methane emissions. The Emeishan LIP caused large amounts of gases and volcanic ash emissions, which affected the Lopingain organic carbon enrichment. CO2 degassing type changed as the LIP emplacement evolved and the transition from a thermogenic CO2 source to the volcanic carbon source may contribute to two episodes of carbon isotope changes.

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位于中国西南部和越南北部的峨眉山大火成岩省（LIP）被认为是瓜达卢佩-罗平边界（GLB；二叠纪）生物危机和古气候变化的潜在驱动因素。在此，我们揭示了峨眉山大裂谷诱发的热脉冲事件及其对化石能量形成和偶发性碳变化的影响。中国西南地区在二叠纪中期经历了持续10 Myrs的脉冲式高热异常，加速了源岩的成熟，产生了大量高温甲烷排放。峨眉山LIP造成大量气体和火山灰排放，影响了罗平有机碳富集。随着LIP置换演化，二氧化碳脱气类型也发生了变化，从热成二氧化碳源到火山碳源的转变可能导致了两次碳同位素变化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Global and Planetary Change 地学天文-地球科学综合

CiteScore

7.40

自引率

10.30%

发文量

226

审稿时长

63 days

期刊介绍： The objective of the journal Global and Planetary Change is to provide a multi-disciplinary overview of the processes taking place in the Earth System and involved in planetary change over time. The journal focuses on records of the past and current state of the earth system, and future scenarios , and their link to global environmental change. Regional or process-oriented studies are welcome if they discuss global implications. Topics include, but are not limited to, changes in the dynamics and composition of the atmosphere, oceans and cryosphere, as well as climate change, sea level variation, observations/modelling of Earth processes from deep to (near-)surface and their coupling, global ecology, biogeography and the resilience/thresholds in ecosystems. Key criteria for the consideration of manuscripts are (a) the relevance for the global scientific community and/or (b) the wider implications for global scale problems, preferably combined with (c) having a significance beyond a single discipline. A clear focus on key processes associated with planetary scale change is strongly encouraged. Manuscripts can be submitted as either research contributions or as a review article. Every effort should be made towards the presentation of research outcomes in an understandable way for a broad readership.