NSFGEO-NERC: After the cataclysm: cryptic degassing and delayed recovery in the wake of Large Igneous Province volcanism

NSFGEO-NERC：灾难之后：大火成岩省火山活动后的神秘排气和延迟恢复

• 批准号: NE/Y00650X/1
• 负责人: Benjamin Mills
• 金额: $ 32.74万
• 依托单位: University of Leeds
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2024
• 资助国家: 英国
• 起止时间: 2024 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FY00650X%2F1
• 关键词: NSFGEO; NERC; After; cataclysm; cryptic

Large Igneous Province (LIP) volcanism is associated with extraordinary mantle melting and voluminous eruptive episodes, which have been linked to mass extinctions of life throughout the Phanerozoic.Significant research over the last three decades has brought the extreme nature of these events into focus. But controls on the nature and tempo of recovery, a topic of emerging interest that highlights potential Earth system tipping points and state shifts, remain unknown. Unexpectedly protracted greenhouse conditions and delayed recovery following multiple Phanerozoic LIPs underscore a fundamental lack of understanding, either of LIP magmatic climate forcing processes or global silicate weathering feedbacks. We propose that cryptic LIP outgassing and weathering combine to shape climate and life after the main phase of volcanism. This proposal will support a multi-disciplinary effort combining field observations; high-resolution records of volcanism, climate, weathering, and paleobiota; and numerical modeling to understand co-evolution of solid and surface Earth during perturbation and recovery. We will leverage three powerful natural laboratory LIPs and climate events, building from the youngest and best-resolved, the Columbia River Basalts and Mid-Miocene Climatic Optimum; to the more voluminous North Atlantic Igneous Province, Paleocene-Eocene Thermal Maximum, and Early Eocene Climatic Optimum; and finally to the Siberian Traps, catastrophic end-Permian mass extinction, and early Triassic hothouse.This project will support an interdisciplinary joint U.S.-U.K. project team including two early career PIs and a sustained outreach/inreach effort in northeastern Oregon, the epicenter of Columbia River Basalt volcanism and site of project field work.

大火成岩省（唇）火山症与非凡的地幔融化和大量的爆发事件有关，这些事件与整个Phanerokoic的生活灭绝有关。在过去的三十年中，重要的研究使这些事件的极端性质成为了重点。但是，控制了恢复的性质和节奏，这是一个新兴的兴趣主题，突出了潜在的地球系统倾斜点和状态变化，这仍然是未知的。多个phanerokoic Lips之后，出乎意料的旷日持久的温室条件和延迟的恢复延迟，这强调了根本缺乏理解，无论是唇部岩浆气候强迫过程还是全球硅酸盐风化的反馈。我们建议，在火山主义的主要阶段，神秘的唇彩超过和风化的结合塑造了气候和生命。该提案将支持结合现场观察的多学科努力；火山，气候，风化和古生物群的高分辨率记录；和数值建模，以了解摄动和恢复过程中固体和表面地球的共同进化。我们将利用三个强大的自然实验室嘴唇和气候事件，这些嘴唇和气候事件是由最年轻，最佳分辨率，哥伦比亚河玄武岩和中新世中期气候最佳的建立的；到北大西洋火成岩省，古新世 - 欧新新世的热量最大和早期始新世气候最佳的最大范围；最后，在西伯利亚的陷阱中，灾难性的终点 - 珀密亚大规模灭绝和早期的三叠纪hothouse。该项目将支持一个跨学科的U.K.项目团队，其中包括两个早期职业PIS和在俄勒冈州东北部的持续外展/INREACH努力，在俄勒冈州东北部的哥伦比亚河基底工厂和现场工业现场工作。