Space-Time Coordinate of the Evolution and Reformation and Mineralization Response in the Ordos Basin LIU Chiyang, ZHAO Hongge, GUI Xiaojun, YUE Leping, ZHAO Junfeng and WANG Jianqiang (State Key Laboratory of Continental Dynamics (Northwest University), Institute of Oil and Gas of Northwest University, Xi'an, Shannxi 710069) The Ordos Basin developed during the middle-late Triassic and early Cretaceous and has been reformed since the late Cretaceous. It mainly possesses the intra-craton characters and is a residual basin with multi-stage and different reformation. The Ordos Basin