Mesozoic–Cenozoic Volcanic Cycle and Volcanic Reservoirs in East China  

作　　者：Guangfu Xing Jianqing Li Zheng Duan Mingxuan Cao Minggang Yu Pingli Chu Rong Chen 

机构地区：[1]Wuhan Center of China Geological Survey,Wuhan 430205,China [2]Nanjing Center of China Geological Survey,Nanjing 210016,China

出　　处：《Journal of Earth Science》2021年第4期742-765,共24页地球科学学刊（英文版）

基　　金：supported by the State Key R&D Project of the Ministry of Science and Technology of China(No.2016YFC06002010).

摘　　要：There are widespread Mesozoic–Cenozoic terrestrial volcanic activities in East China,and they produced favorable geologic factors for the volcanic reservoirs.To reveal the spatio-temporal evolution of regional volcanisms and their tectonic setting,we subdivide Mesozoic–Cenozoic volcanic activities into 6 volcanic cycles(Ⅰ–Ⅵ),and summarize the temporal-spatial distribution,rock association and tectonic setting of each cycle.The Cycle I forms a post-orogenic intraplate bimodal volcanic association.The cyclesⅡandⅢinclude arc volcanic associations formed in compressional and extensional subduction environments,respectively.The CycleⅣcontains a post-orogenic arc bimodal association.The CycleⅤis a basaltic association of tholeiite series under initial rift setting,and the CycleⅥis basaltic association of alkaline series under typical rift setting.The volcanic strata between each cycle are bounded by regional unconformity.The above 6 volcanic cycles correspond to 6 sequential stages of tectonic evolutions from the Early Jurassic post-orogeny,the Mid-Jurassic–Cretaceous subduction of the paleo-Pacific Plate to the Cenozoic marginal rifting.According to the geological characteristics of volcanic reservoirs in different volcanic cycles,it is put forward that the CycleⅤis the major formation period of volcanic reservoirs in East China and should be the focus of exploration,and that the volcanic reservoirs of the CycleⅣare also worthy of attention.

关 键 词：volcanic reservoir tectonic evolution volcanic cycle MESOZOIC-CENOZOIC East China 

分 类 号：P618.13[天文地球—矿床学]