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Enlightenment of the Mariana Fore-arc Sedimentary Basin Evolution to the subduction Process

Acta Geologica Sinica(English Edition) 2022年第1期96卷 71-80页

作者： XING Lei LI Qianqian MENG Qingwei LIU Huaishan WEI Jia LU Boran ZHOU Heng Key Lab of Submarine Geosciences and Prospecting Techniques Ministry of EducationOcean University of ChinaQingdaoShandong 266100China Evaluation and Detection Technology Laboratory of Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdaoShandong 266237China Chinese Academy of Geological Sciences Beijing 100037China Qingdao Institute of Marine Geology China Geological SurveyMinistry of Natural ResourcesQingdaoShandong 266071China BGP International CNPCZhuozhouHebei 072750China

The Mariana subduction structure is a hot topic in ocean-ocean subduction zone research,and its subduction mechanism has attracted wide attention from experts and scholars in China and *** on the multi-channel seismic data of survey line MGL1204 in the Mariana fore-arc and DSDP ocean drilling data,this paper studies the development and evolution characteristics of the structure and strata in the Cenozoic Mariana fore-arc sedimentary *** Cenozoic strata are divided into six seismic sequences,with the possible era of each seismic sequence discerned,and the relationship between fault development and earthquakes *** episodic activity of the volcanic chain of the Mariana island arc is thought to control the tectonic and stratigraphic development pattern of the Cenozoic sedimentary basin in the *** 16°N-19°N and 146°E-151°E,the maximum thickness of the sedimentary center of the Cenozoic fore-arc sedimentary basin in Mariana is about 2360 *** faults are developed in the area and some broke to the seabed,indicating that the Mariana island arc is still in the post-arc expansion *** application of multi-channel seismic sections in structural and stratigraphic evolution study is an important means to elucidating the Mariana subduction mechanism.

关键词： subduction system fore-arc basin sedimentary evolution subduction mechanism Mariana

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