A Study on Tectonic Stress's Field of Brittle Deformation in the Northern Tibet Qinghai Plateau
青藏高原北缘断裂擦痕的构造分析

Through field observation and computer processing of fault slip data, we divided the brittle tectonic stress' fields in the northern Tibet Qinghai plateau into two periods: Oligocene middle Pleistocene and middle Pleistocene Holocene. The maximum principal stress's orientation is approximately S N direction in the former period and N E in Altyn Taph and N W in Qilian respectively in the latter one. Meanwhile, geodyncmics of the northern Tibet Qinghai plateau is analysized.