Characteristics of Meso-Cenozoic Igneous Complexes in the South Yellow Sea Basin, Lower Yangtze Craton of Eastern China and the Tectonic Setting

Characteristics of Meso-Cenozoic Igneous Complexes in the South Yellow Sea Basin, Lower Yangtze Craton of Eastern China and the Tectonic Setting
Author:
  • PANG Yumao

    PANG Yumao

    1 Institute of Oceanology, Chinese Academy Science, Qingdao 266071, Shandong, China 2 University of Chinese Academy of Sciences, Beijing 100049, China 3 Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, Shandong, China 4 College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, China
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  • ZHANG Xunhua

    ZHANG Xunhua

    3 Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, Shandong, China;5 MLR Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Qingdao Institute of Marine Geology, Qingdao 266071, Shandong, China 6 Nanjing Center, China Geological Survey, Nanjing 210016, Jiangsu, China
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  • XIAO Guolin

    XIAO Guolin

    3 Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, Shandong, China;5 MLR Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Qingdao Institute of Marine Geology, Qingdao 266071, Shandong, China
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  • GUO Xingwei

    GUO Xingwei

    3 Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, Shandong, China;5 MLR Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Qingdao Institute of Marine Geology, Qingdao 266071, Shandong, China
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  • WEN Zhenhe

    WEN Zhenhe

    3 Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, Shandong, China;5 MLR Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Qingdao Institute of Marine Geology, Qingdao 266071, Shandong, China
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  • WU Zhiqiang

    WU Zhiqiang

    3 Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, Shandong, China;5 MLR Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Qingdao Institute of Marine Geology, Qingdao 266071, Shandong, China
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  • ZHU Xiaoqing

    ZHU Xiaoqing

    3 Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, Shandong, China;5 MLR Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Qingdao Institute of Marine Geology, Qingdao 266071, Shandong, China
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Fund Project:

This study was financially supported by The National Special Project for Marine Geology (DD20160147), the National Basic Research Program of China (973 program; Grant No. 2013CB429701) and the National Natural Science Foundation of China (Grant No.41210005). Database for basin modeling were supported by Qingdao Institute of Marine Geology (QIMG), China. We would like to sincerely thank the QIMG for permission to publish relevant data. Several responsible reviewers are thankworthy for their significant suggestions that helped improved the manuscript quality.

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    摘要:

    Abstract:

    The South Yellow Sea Basin is partially surrounded by the East Asian continental Meso-Cenozoic widespread igneous rocks belt. Magnetic anomaly and multi-channel seismic data both reveal the prevalent occurrence of igneous rocks. We preliminarily defined the coupling relation between magnetic anomalies and igneous rock bodies. Some igneous complexes were also recognized by using multi-channel seismic and drilling data. We identified various intrusive and extrusive igneous rock bodies, such as stocks, sills, dikes, laccoliths and volcanic edifice relics through seismic facies analysis. We also forecasted the distribution characteristics of igneous complexes. More than fifty hypabyssal intrusions and volcanic relics were delineated based on the interpretation of magnetic anomaly and dense intersecting multi-channel seismic data. It is an important supplement to regional geology and basin evolution research. Spatial matching relations between igneous rock belts and fractures document that extensional N–E and N–NE-trending deep fractures may be effective pathways for magma intrusion. These fractures formed under the influence of regional extension during the Meso-Cenozoic after the Indosinian movement. Isotopic ages and crosscutting relations between igneous rock bodies and the surrounding bedded sedimentary strata both indicate that igneous activities might have initiated during the Late Jurassic, peaked in the Early Cretaceous, gradually weakened in the Late Cretaceous, and continued until the Miocene. Combined with previous studies, it is considered that the Meso-Cenozoic igneous activities, especially the intensive igneous activity of the Early Cretaceous, are closely associated with the subduction of the Paleo-Pacific Plate.

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PANG Yumao, ZHANG Xunhua, XIAO Guolin, GUO Xingwei, WEN Zhenhe, WU Zhiqiang, ZHU Xiaoqing.2017. Characteristics of Meso-Cenozoic Igneous Complexes in the South Yellow Sea Basin, Lower Yangtze Craton of Eastern China and the Tectonic Setting[J]. ACTA GEOLOGICA SINICA(English edition),91(3):971~987

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历史
  • 收稿日期:2016-03-05
  • 最后修改日期:2016-10-13
  • 在线发布日期: 2017-06-08
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