New Discovery of Surface Rupture of Large Paleo‐Earthquake along Northern Pagri‐Duoqing Co Graben, Southern Yadong‐Gulu Rift

Since the Late Cenozoic, the most remarkable active tectonics interior of the Tibetan Plateau has been the north -trending rifts and NW-trending strike-slip faults especially in the southern-central Tibet. The Yadong-Gulu rift is one of the largest active faults of north-trending rifts in the southern Tibet. During the history, several large earthquakes occurred along this rift, such as 1411 Yangbajain earthquake (M=8.0) and 1952 Damxung earthquake (Mw=7.4). However, there is lack of documents of large earthquakes (Mw≥7) along its southern part. In this case, we took field investigation along the southern Yadong-Gulu rift and discovered a paleo-earthquake surface rupture along Pagri-Duoqing Co graben that may help to understand the seismic activity characteristics of Yadong-Gulu rift.