Kinematic Analysis of a Major Fault System in the Blue RidgeProvince, Southern and Central Appalachians

蓝岭地区主要断裂的近期运动学研究 弗吉尼亚州西南部的许多人提出了一种可能性， 这些断层在晚前寒武纪是伸展性的， 然后在古生代挤压过程中局部重新活化。 广泛的糜棱岩构造组构记录了剪切感， 遗迹峰变质组合记录了山脚下的条件， 断层系统的上盘和上盘。 结果将 严格检验早期主要伸展运动的假设 土卫八古生代闭合之前的构造

Recent kinematic studies of major faults in the Blue Ridge of southwestern Virginia have raised the possibility that many of these faults were extensional during the late Precambrian and were then locally reactivated during Paleozoic compression. Extensive mylonitic tectonic fabrics record sense of shear and relic peak metamorphic assemblages record conditions in the foot- wall and hanging wall of the fault systems. Results will rigorously test the hypothesis for early, major extensional tectonics prior to the Paleozoic closure of Iapetus.