Neogene Development of the Northern Walker Lane, Western Nevada: An Evolving Transform Plate Boundary

内华达州西部沃克巷北部的新近纪发展：不断演变的转换板块边界

• 批准号: 0124869
• 负责人: James Faulds
• 金额: $ 27.26万
• 依托单位: Board of Regents, NSHE, obo University of Nevada, Reno
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-01-01 至 2006-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0124869&HistoricalAwards=false
• 关键词: Neogene; Development; Northern; Walker; Lane

Approximately 20% of the relative motion between the North American and Pacific plates is accommodated along a system of active right-lateral strike-slip faults which runs from southern California through western Nevada and into southern Oregon. This zone is known as the Eastern California Shear Zone and Walker Lane. The remaining 80% of relative offset occurs along the San Andreas fault. The northern portion of the Walker Lane, near Reno, Nevada, is especially poorly studied but is believed to be the youngest portion of the zone and, thus, may well be the best region within which to study the beginning stages of an intra-continental transform. This study will attempt to determine primarily the timing and amount of right-lateral offset across the fault zone by applying a variety of geologic and geochronologic techniques. The results will have significance for understanding the evolution of plate boundaries but will also be of considerable significance in evaluating the seismic risk for the Reno area.

大约20%的北美板块和太平洋板块之间的相对运动是沿着一个活跃的右行走滑断层系统进行的，该断层从加州州南部穿过内华达州西部进入俄勒冈州南部。这个区域被称为东加州剪切带和步行者巷。其余80%的相对偏移量发生在沿着圣安德烈亚斯断层。内华达州里诺附近的步行者巷的北方部分研究得特别少，但据信是该带最年轻的部分，因此，很可能是研究大陆内转换开始阶段的最佳区域。本研究将试图通过应用各种地质和地质年代学技术，初步确定横跨断裂带的右旋错动的时间和数量。研究结果不仅对了解板块边界的演化有重要意义，而且对评价里诺地区的地震危险性也有重要意义。