Special Section
Quaternary Intrusions from the Zhongjiannan Basin, South China Sea: Their Relationship with the Hainan Mantle Plume and Influence on Hydrocarbon Reservoirs
Yanxin HE,
Jianping LIU,
Lei WANG,
Wei TIAN,
Yanxin HE
Key Laboratory of Orogenic Belts and Crustal Evolution, MOE, School of Earth and Space Sciences, Peking University, Beijing, 100871 China
Search for more papers by this authorCorresponding Author
Jianping LIU
School of Petroleum Engineering, Chongqing University of Science and Technology, Chongqing, 401331 China
Guangzhou Marine Geological Survey, Ministry of Natural Resources, Guangzhou, 510760 China
School of Marine Sciences, Sun Yat-sen University, Zhuhai, 519000 China
Corresponding author. E-mail: [email protected]Search for more papers by this authorLei WANG
Key Laboratory of Orogenic Belts and Crustal Evolution, MOE, School of Earth and Space Sciences, Peking University, Beijing, 100871 China
Search for more papers by this authorWei TIAN
Key Laboratory of Orogenic Belts and Crustal Evolution, MOE, School of Earth and Space Sciences, Peking University, Beijing, 100871 China
Search for more papers by this authorYanxin HE,
Jianping LIU,
Lei WANG,
Wei TIAN,
Yanxin HE
Key Laboratory of Orogenic Belts and Crustal Evolution, MOE, School of Earth and Space Sciences, Peking University, Beijing, 100871 China
Search for more papers by this authorCorresponding Author
Jianping LIU
School of Petroleum Engineering, Chongqing University of Science and Technology, Chongqing, 401331 China
Guangzhou Marine Geological Survey, Ministry of Natural Resources, Guangzhou, 510760 China
School of Marine Sciences, Sun Yat-sen University, Zhuhai, 519000 China
Corresponding author. E-mail: [email protected]Search for more papers by this authorLei WANG
Key Laboratory of Orogenic Belts and Crustal Evolution, MOE, School of Earth and Space Sciences, Peking University, Beijing, 100871 China
Search for more papers by this authorWei TIAN
Key Laboratory of Orogenic Belts and Crustal Evolution, MOE, School of Earth and Space Sciences, Peking University, Beijing, 100871 China
Search for more papers by this authorFirst published: 15 March 2023
About the first author:
HE Yanxin, male, born in 1993 in Ganzhou, Jiangxi Provence; master; graduated from China University of Petroleum (Beijing); a Ph.D. student in School of Earth and Space Sciences, Peking University. He is now interested in the study on the volcanology. E-mail: [email protected].
About the corresponding author:
LIU Jianping, male, born in 1991 in Susong, Anhui Province; Ph.D.; graduated from China University of Petroleum, Beijing; lecturer of Chongqing University of Science & Technology. He engages in sedimentology, seismic geomorphology and sequence stratigraphy. E-mail: [email protected].
Abstract
The transportation of magma in sedimentary basins often occurs through extensive dyke-sill networks. The role of sills on the plumbing system in rifted margins and the impact of sills on hydrocarbon reservoirs of prospective sedimentary basins has long been an area of great industrial interest and scientific debate. Based on 2D seismic reflection, we present data on how the sills emplaced to form a magmatic plumbing system of the volcanic system for the Zhongjiannan Basin (ZJNB). The results show that sixty-nine sills and fourteen forced folds have been identified. The distribution and geometry of the sills suggest that magma flowed from west to east and then ascended to near the surface. The onlap relationship of the forced folds indicates that the timing of magmatic activities can be constrained at ca. 0.2 Ma. The spatial and temporal occurrences of intrusions imply that the strong post-rift magmatism in ZJNB was associated with the Hainan mantle plume arising from the core-mantle boundary. Furthermore, these forced folds could produce several types of hydrocarbon traps, due to accommodation through bending and uplift of the overlying rock and free surface, but it is critical to evaluate the effect of such emplacement when setting exploration targets.
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