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.

北美和太平洋板之间的相对运动的约20％是沿着主动右侧滑滑断层系统容纳的，该系统从南加州到内华达州西部到俄勒冈州南部。该区域被称为东加州剪切区和沃克巷。其余80％的相对偏移发生在圣安德烈亚斯断层沿线。内华达州里诺附近的沃克巷北部的研究尤其较差，但据信是该地区最年轻的部分，因此很可能是研究群体内变换的开始阶段的最佳地区。这项研究将尝试通过应用各种地质和地质技术技术来确定整个断层区的右侧偏移的时间和量。结果对于理解板边界的演变具有重要意义，但在评估Reno地区的地震风险方面也具有相当大的意义。