Extensional Strain Rates in the Basin and Range Province

盆山伸展构造一直是 然而，大量的地质和地球物理调查， 还有几个主要的问题，如关系- 拉张作用与岩浆作用之间的关系以及拉张作用的速率。 本研究将利用40 Ar/39 Ar定年方法对同生伸展构造进行研究， 火山岩和变质岩从东中部和 内华达州西部和亚利桑那州西部。 结果将解决 应变率的问题，以及是否延伸是同步的， 如果岩浆活动与 扩展名.

Basin and range extensional tectonics has been the focus of considerable geological and geophysical investigation, however, there are several major problems remaining such as the relation- ship between extension and magmatism and the rate of extension. This study will involve 40 Ar/39 Ar dating of synextensional volcanic rocks and metamorphic rocks from east-central and western Nevada and western Arizona. Results will address the question of strain rates and whether extension was synchronous or diachronous across domains and if magmatism was concurrent with extension.