Collaborative Research: Neotectonics Across an Active Oblique-Divergent Plate Margins, Southwestern Gulf of California

拟议的研究将通过对10至10万年时间尺度的活动断层位置和滑动速率进行全面调查，量化南部下加利福尼亚大陆边缘和加州湾海底扩张系统之间的应变分配。它以该区域主要参与者的经验为基础。研究的重点是拉巴斯湾的一段裂谷边缘。将采用几种方法，包括新构造测绘、陆上和海上构造测绘、古地震学和大地测量学。目的是确定板块边缘走滑分割的程度;为什么分割的程度沿板块边缘沿着走向沿着发生变化，以及断层作用如何随时间发生变化？该项目是MARGINS“大陆岩石圈破裂”倡议的一部分。这项工作将与墨西哥科学家合作，并将有助于了解该地区的地震危险。

The proposed research will quantify the partitioning of strain between the southern Baja California continental margin and the Gulf of California seafloor spreading system through a comprehensive survey of active fault locations and slip rates at 10 to 100,000 year time scales. It builds on the experience of the PIs in the region. The focus of study is a segment of the rift margin at La Paz Bay. Several approaches will be employed, including neotectonic mapping, onshore and offshore structural mapping, paleoseismology and geodesy. The goals are to determine to what extent is the plate margin strike-slip partitioned; why does the degree of partitioning change along strike along the margin and how has faulting changed over time? The project is a part of MARGINS "rupture of continental lithosphere" initiative. Work will be in collaboration with Mexican scientists and will contribute toward the understanding of earthquake hazards in the area.