Sublacustrine Volcanism

湖底火山作用

• 批准号: 9105456
• 负责人: Richard Fisher
• 金额: --
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-08-15 至 1994-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9105456&HistoricalAwards=false
• 关键词: Sublacustrine; Volcanism

This study will develop and test a model for sublacustrine eruptions based on evaluation of several volcanoes known to have erupted in relatively deep lakes. A selected set of volcanoes erupted into ancient Lake Idaho will be evaluated using the model to test its validity. Precise field observation is critical. The PIs will log eruptive successions in detail, and trace-out lateral relationships on cliffside exposures. Additional information will be obtained by standard thin-section petrography and limited x-ray diffraction and microprobe analysis. The study is expected to demonstrate that eruptive processes analogous to those inferred for Surtseyan volcanoes control the evolution of volcanoes erupted into deep lakes.

这项研究将基于对已知在相对较深的湖泊中喷发的几座火山的评估，开发和测试湖下喷发模型。将使用该模型对一组选定的喷发到古爱达荷湖的火山进行评估，以测试其有效性。精确的现场观察至关重要。 PI 将详细记录喷发序列，并追踪悬崖边暴露的横向关系。附加信息将通过标准薄片岩相学和有限的 X 射线衍射和微探针分析获得。这项研究预计将证明，类似于苏尔塞扬火山的喷发过程控制着火山喷发成深湖的演化。