Collaborative Research: Seismic Imaging of New Transitional Crust in the Salton Trough Oblique Rift

合作研究：索尔顿海槽斜裂谷新过渡地壳的地震成像

• 批准号: 0742263
• 负责人: John Hole
• 金额: $ 84.22万
• 依托单位: Virginia Polytechnic Institute and State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-05-15 至 2015-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0742263&HistoricalAwards=false
• 关键词: Collaborative; Research; Seismic; Imaging; New

0742263 HoleAbstractThe project will address the processes of rupturing of continental lithosphere through seismic reflection and refraction survey of the Salton Trough. This is an ideal location to study the effect of magmatism and sedimentation on continental extension and the portioning of the strain vertically in the lithosphere. The objectives of the study are to investigate the nature of the transitional crust at rifted continental margins; the role of magmatism in final stages of breakup; the effect of synrift sedimentation on magmatism and extension mechanism; the portioning and displacement in highly oblique continental rifting; and 3D structure for earthquake hazard evaluation.The broader impacts include addressing important goals of the MARGINS RCL initiative and contribute towards the goals of Earthscope as well as GeoSwath initatives. It uses Earthscope instrumention. It will foster strong collaboration between MARGINS, Earthscope and USGS, and involve undergraduate and graduate students in the field experiment. It will also incorporate the experiment into a graduate level course, and involve students in the interpretation of the data once it is collected.

0742263孔摘要该项目将通过对索尔顿海槽的地震反射和折射测量来研究大陆岩石圈的破裂过程。这是研究岩浆作用和沉积作用对大陆伸展的影响以及应变在岩石圈中的垂直分配的理想地点。这项研究的目的是调查裂谷大陆边缘过渡性地壳的性质；岩浆作用在分裂的最后阶段的作用；同裂谷沉积对岩浆作用的影响和伸展机制；高度倾斜的大陆裂谷中的分配和位移；以及用于地震危险性评估的三维结构。更广泛的影响包括解决边缘RCL倡议的重要目标，以及对地球望远镜和GeoSwath初始目标的贡献。它使用地球观测仪。它将促进Markets、Earth Scope和USGS之间的强大合作，并让本科生和研究生参与现场实验。它还将把实验纳入研究生水平的课程，并在收集数据后让学生参与解释数据。