NSFGEO-NERC: The Cracking of a Craton: Understanding Volatile Release during Continental Breakup

NSFGEO-NERC：克拉通的破裂：了解大陆破裂期间的挥发物释放

• 批准号: NE/Z000017/1
• 负责人: Christopher Ballentine
• 金额: $ 32.12万
• 依托单位: University of Oxford
• 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%2FZ000017%2F1
• 关键词: NSFGEO; NERC; Cracking; Craton; Understanding

Volatile elements (hydrogen, carbon, nitrogen) played an essential role in the secular evolution of the solid Earth and the eventual emergence of life. Over Earth history, volatiles - including "trace volatiles" such as noble gases - have been transported between Earth's surface, crust, and mantle reservoirs, via subduction and volcanism. Continental cratons are relatively stable and potentially represent a large, yet poorly-constrained volatile reservoir (e.g., Sherwood Lollar et al., 2014). When cratons are disrupted by major volcanic and/or rifting events, they release large amounts of volatiles into Earth's crust and atmosphere. Such events also release economically important gases (e.g., helium and H2), which have long been stored in the stable craton (e.g., Ballentine and Burnard 2002; Lowenstern et al., 2014). The objective of this proposal is to determine the geological processes that control volatile production in the craton, migration through the crust and release at the surface in the form of seeps.

挥发性元素（氢、碳、氮）在固体地球的长期演化和生命的最终出现中发挥着至关重要的作用。在地球历史上，挥发物（包括稀有气体等“微量挥发物”）通过俯冲和火山作用在地球表面、地壳和地幔储层之间传输。大陆克拉通相对稳定，可能代表一个大型但约束较差的挥发性储层（例如，Sherwood Lollar 等，2014）。当克拉通受到主要火山和/或裂谷事件的破坏时，它们会向地壳和大气中释放大量挥发物。此类事件还释放出对经济具有重要意义的气体（例如氦气和氢气），这些气体长期储存在稳定的克拉通中（例如，Ballentine 和 Burnard 2002；Lowenstern 等，2014）。该提案的目的是确定控制克拉通挥发性物质产生、穿过地壳迁移以及以渗漏形式在地表释放的地质过程。