COLLABORATIVE RESEARCH: Fault Block Rotation and Intra- Continental Strain in the Northern Walker Lane, Basin and Range Province

合作研究：盆地山脉省沃克巷北部的断块旋转和大陆内应变

• 批准号: 9405366
• 负责人: Patricia Cashman
• 金额: $ 10.71万
• 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: 1994
• 资助国家: 美国
• 起止时间: 1994-09-15 至 1998-09-01
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9405366&HistoricalAwards=false
• 关键词: COLLABORATIVE; RESEARCH; Fault; Block; Rotation

9405366 Cashman The basic premise of plate tectonics that plates more as rigid bodies with deformation occurring only at boundaries between plates is violated locally within continents, as demonstrated by the existence of broad zones of diffuse strain. This study intra-plate strain focuses on the northern Walker Lane in the Basin and Range province of the Western United States. Prior work has delineated fault-bounded blocks, identified units that will yield useful paleomagnetic results and documented the orientation and sense of slip an major faults, some of which are nearly orthogonal to each other. This work will test for vertical-axis rotations of the identified blocks and will develop a kinematic model of this example of intra-plate strain including block rotations. Results will also provide insight into the relationship between intracontinental strain nd plate-boundary interactions.

9405366卡什曼板块构造的基本前提是，板块更多地是作为刚体，变形只发生在板块之间的边界上，这一前提在大陆内部被局部违背了，正如广泛的扩散应变带的存在所证明的那样。本研究的板内应变集中在美国西部盆地和山脉省的北沃克巷。先前的工作已经描绘了断层边界块，确定了将产生有用的古地磁结果的单元，并记录了主要断层的方向和滑动感，其中一些断层几乎彼此正交。这项工作将测试已识别块的垂直轴旋转，并将开发包含块旋转的板内应变示例的运动学模型。结果也将提供洞察大陆内应变和板块边界相互作用之间的关系。