YANG Zhen
1 Guangzhou Marine Geological Survey,China Geological Survey,Guangzhou 510075,China；2 Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458,ChinaLI Xuelin
1 Guangzhou Marine Geological Survey,China Geological Survey,Guangzhou 510075,China；2 Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458,China；3 Laboratory of Marine Geophysics and Georesource,Institute of Deep Sea Science and Engineering,Chinese Academy of Sciences,Sanya,Hainan 572000,ChinaHUANG Lei
1 Guangzhou Marine Geological Survey,China Geological Survey,Guangzhou 510075,China；2 Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458,ChinaWANG Liaoliang
1 Guangzhou Marine Geological Survey,China Geological Survey,Guangzhou 510075,China；2 Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458,ChinaWU Shiguo
3 Laboratory of Marine Geophysics and Georesource,Institute of Deep Sea Science and Engineering,Chinese Academy of Sciences,Sanya,Hainan 572000,China；4 Laboratory for Marine Geology,Qingdao National Laboratory for Marine Science and Technology,Qingdao,Shandong 266061,ChinaZHANG Xinyuan
4 Laboratory for Marine Geology,Qingdao National Laboratory for Marine Science and Technology,Qingdao,Shandong 266061,ChinaThe authors express their gratitude to PetroChina for their permission to release seismic data data.This research was financially supported by Natural Science Foundation of China (No.91228208),Natural Science Foundation of China-Guangdong Joint Fundation (U1701245),Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) (GML2019ZD0102),Geological Survey Project of China Geological Survey (DD20190209; DD20190216),and the knowledge innovation project of the Institute of Deep Sea Science and Engineering,CAS (SIDSSE201403).
This study investigates the evolution of the Miocene Guangle carbonate platform (or Triton Horst) of the northwestern South China Sea margin.The platform is located at a junction area surrounded by Yinggehai basin,Qiongdongnan basin and Zhongjiannan basin.Well and regional geophysical data allow the identification of the morphologic and stratigraphic patterns.The Guangle carbonate platform was initiated on a tectonic uplift during the Early Miocene.The early platform was limited at Mesozoic granitic basement,pre-Paleogene sediments localized tectonic uplift and was small extension at the beginning stage.While during the Middle Miocene,the carbonate buildup flourished,and grow a thrived and thick carbonate succession overlining the whole Guangle Uplift.The isolated platforms then united afterward and covered an extensive area of several tens of thousands of square kilometers.However,it terminated in the Late Miocene.What are the control factors on the initiation, growth and demise of the Guangle carbonate platform? The onset of widespread carbonate deposits largely reflected the Early Miocene transgression linked with early post-rift subsidence and the opening of the South China Sea.Stressed carbonate growth conditions on the Guangle carbonate platform probably resulted from increased inorganic nutrient input derived from the adjacent uplifted mainland,possibly enhanced by deteriorated climatic conditions promoting platform drowning.Therefore, tectonics and terrigenous input could be two main controlling factors on the development of the Guangle carbonate platforms and main evolution stages.
YANG Zhen, LI Xuelin, HUANG Lei, WANG Liaoliang, WU Shiguo, ZHANG Xinyuan.2021. Development of the Miocene Guangle Carbonate Platform in the South China Sea: Architecture and Controlling Factors[J]. Acta Geologica Sinica(),95(1):177-191
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