QUANTITATIVE DATA OF ACTIVE FAULTS WITHIN THE ACTIVE TECTONIC BLOCK IN NORTH QINGHAI-XIZANG PLATEAU

This paper defines the boundaries of north Qinghai-Xizang plateau active tectonic block and offers quantitative information of active faults within the north Qinghai-Xizang plateau active tectonic block in the past dozen years. The information mainly include: the serial number,name,attitude of active fault,main geological geomorphic signs,activity age,fault segmentation,fault slip rate,paleo-earthquake and its date,and the major features of earthquake rupture zones and so on. These data indicate that great earthquakes with M≥8 concentrate on the boundary active faults of the north Qinghai-Xizang plateau active tectonic block,and the slip rate of the faults all reaches about 5～12mm/yr. Earthquakes of about M7 occurred on the smaller-scale active faults inside the north Qinghai-Xizang plateau active tectonic block. Generally,the slip rates of these active faults are 1～3mm/yr.The north Qinghai-Xizang plateau active tectonic block can be divided into several sub-blocks,and these active sub-blocks are dominated with deformation,and no rotation occurred. Our result supports the hypothesis of continuous deformation of Qinghai-Xizang plateau active tectonic block.