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

9405366现金人板块构造的基本前提，即板块更多地作为刚体，变形只发生在板块之间的边界，但在大陆内部局部违反了这一前提，扩散应变区的存在证明了这一点。本研究的板内应变主要集中在美国西部盆地和山脉省的Walker Lane北部。以前的工作已经圈定了断层范围的块体，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滑动方向和意义，其中一些断层几乎彼此垂直。这项工作将测试识别出的块体的垂直轴旋转，并将开发包括块体旋转在内的这种板内应变的运动学模型。研究结果还将深入了解陆内应变和板块-边界相互作用之间的关系。

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.