近日，中国科学院地球化学研究所尹润生团队报道了大陆弧火山活动加剧了中二叠纪变暖。2025年11月4日出版的《地质学》杂志发表了这项成果。

中二叠世不仅出现了预示晚古生代大冰期终结的重大气候变暖趋势，还在卡匹敦期生物危机期间发生广泛海洋缺氧。尽管峨眉山大火成岩省（ELIP）被认为是此次变暖的潜在驱动力，但其作用仍存争议。

研究组对华南中二叠世深水地层中夹凝灰岩开展汞含量-同位素及锆石地球化学综合分析，发现在ELIP喷发前就已存在与中二叠世变暖同步的持续性大陆弧火山活动（CAV），暗示二者可能存在因果关联。基于碳-氧-磷-硫循环耦合模型，研究组提出全球范围内增强的CAV可能向大气释放了足量CO₂，从而触发气候变暖，最终导致海洋缺氧与生物危机。这些发现挑战了将ELIP视为中二叠世变暖唯一成因的传统观点，揭示出大陆弧火山活动在地球气候历史中可能具有重要作用。

附：英文原文

Title: Continental arc volcanism fueled Middle Permian warming

Author: Bolin Zhang, Xianguo Lang, Thomas J. Algeo, Wei Shi, Paul B. Wignall, Jian Cao, Chao Li, Suping Yao, Yiquan Ma, Chen Zhang, Runsheng Yin

Issue&Volume: 2025-11-04

Abstract: The Middle Permian was characterized by a major climatic warming trend that heralded the end of the late Paleozoic Ice Age, as well as by widespread marine anoxia during the Capitanian biotic crisis. Although the Emeishan large igneous province (ELIP) has been implicated as a potential driver of this warming, its role remains contentious. We present a comprehensive analysis of mercury abundance and isotopes, along with zircon geochemistry, from tuffs interbedded in a Middle Permian deep-water succession from South China. Our data reveal sustained continental arc volcanism (CAV) prior to the ELIP eruptions that coincided with the Middle Permian warming, suggesting a potential causal relationship between them. Supported by Carbon-Oxygen-Phosphorus-Sulfur-Evolution modeling, we propose that globally increased CAV may have released sufficiently large quantities of CO2 to the atmosphere to trigger climate warming, ultimately leading to marine anoxia and biotic crisis. Our findings challenge the prevailing view of the ELIP as the sole cause of the Middle Permian warming and highlight the potential importance of CAV in Earth’s climate history.

DOI: 10.1130/G54053.1

Source: https://pubs.geoscienceworld.org/gsa/geology/article-abstract/doi/10.1130/G54053.1/666399/Continental-arc-volcanism-fueled-Middle-PermianredirectedFrom=fulltext