Scholarlink

<p>Climate change and driving mechanisms of the Late Paleozoic Ice Age, an ideal analogue to the present-day global change, remain controversial. Here we propose a volcanic carbon–sulfur radiative forcing mechanism by investigating the Lower Permian Lucaogou Formation in the Junggar Basin, northern Pangea, across the Artinskian warming. Carbon isotope stratigraphy and paleoclimatic proxies record Early Permian carbon cycle fluctuations and second-order cooling amid first-order Artinskian warming. Peaks in mercury concentrations, mercury/total organic carbon, and negative δ<sup>13</sup>C<sub>org</sub> and δ<sup>34</sup>S<sub>bulk</sub> excursions align with Tarim Large Igneous Province eruptions, indicating that Tarim volcanism drove mercury–carbon–sulfur cycling and climate change. Specifically, sulfur cycling induced short-term cooling via elevated atmospheric sulfate, while carbon cycling fueled long-term warming by raising atmospheric carbon dioxide levels. Globally, volcanism likely modulated carbon–sulfur cycling and glacial–nonglacial alternations across geological eras, with sulfate forcing being a long-overlooked yet crucial mechanism for climate evolution.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Volcanically driven Hg–C–S cycling and climate change across the Early Permian Artinskian warming

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年11月11日

查看全文
  • Anbin Wu,
  • Jian Cao,
  • Jingkun Zhang,
  • Wenxuan Hu,
  • Yuce Wang,
  • Chenjia Zhang,
  • Wenjun He

摘要

Climate change and driving mechanisms of the Late Paleozoic Ice Age, an ideal analogue to the present-day global change, remain controversial. Here we propose a volcanic carbon–sulfur radiative forcing mechanism by investigating the Lower Permian Lucaogou Formation in the Junggar Basin, northern Pangea, across the Artinskian warming. Carbon isotope stratigraphy and paleoclimatic proxies record Early Permian carbon cycle fluctuations and second-order cooling amid first-order Artinskian warming. Peaks in mercury concentrations, mercury/total organic carbon, and negative δ13Corg and δ34Sbulk excursions align with Tarim Large Igneous Province eruptions, indicating that Tarim volcanism drove mercury–carbon–sulfur cycling and climate change. Specifically, sulfur cycling induced short-term cooling via elevated atmospheric sulfate, while carbon cycling fueled long-term warming by raising atmospheric carbon dioxide levels. Globally, volcanism likely modulated carbon–sulfur cycling and glacial–nonglacial alternations across geological eras, with sulfate forcing being a long-overlooked yet crucial mechanism for climate evolution.