Abstract:

Five periods of structural deformations in the Late Mesozoic era have been identified by systematic field investigation and structural analyses. The first one is the NEE trending thrust structure, which took place from the end of the Middle Jurassic to the beginning of the Early Cretaceous, approximately 160150 Ma. The second one is characterized by the highangel normal fault and the NNE trending leftlaterastrikeslipfault which formed at the beginning of the Early Cretaceous, approximately 150135 Ma. The third one is the NEE trending leftlateral strikeslip faults, which formed at the late Early Cretaceous, approximately 125120 Ma. The forth one is the NENEE trending rightlateral strikeslip faults formed at the end of the Early Cretaceous, approximately 100 Ma. The last main structural deformation is the top to the NWW thrust with an NNE striking, which formed at the early Late Cretaceous after 75 Ma. The multistage deformations are associated with the latest collision of the North China and the South China plate, and with the different directional subduction of the Pacific plate towards the EuroAsian plate at different stages, and even with the eastward remote extrusion effect of the collision between Indian plate and EuroAsian plate.

Key words: adjacent region of Anhui, Zhejiang and Jiangxi Provinces, multi stage structural deformation, Late Mesozoic, subduction of the Pacific plate