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Characteristics of mud diapirs and mud volcanoes and their relationship to oil and gas migration and accumulation in a marginal basin of the northern South China Sea
He, Jiaxiong; Wang, Shuhong; Zhang, Wei; Yan, Wen; Lu, Zhenquan; Wang, SH (reprint author), Chinese Acad Sci, Guangzhou Inst Geochem, South China Sea Inst Oceanol, CAS Key Lab Marginal Sea Geol, Guangzhou 510000, Guangdong, Peoples R China.; Wang, SH (reprint author), Minist Land & Resources, Key Lab Marine Mineral Resources, Guangzhou 510075, Guangdong, Peoples R China.
2016
Source PublicationENVIRONMENTAL EARTH SCIENCES
Volume75Issue:15Pages:1122
AbstractMud diapir and mud volcano have the same formation mechanism and similar development and evolution characteristics, but different geological features and forms. In this study, the development and characteristics of a mud diapir in Yinggehai Basin (northwestern South China Sea) and a mud volcano in Southwest Taiwan Basin (northeastern South China Sea) were investigated. The geochemical characteristics of their associated natural gases were also analyzed. The results indicated that the Yinggehai Basin mud diapir is mainly distributed in the deep and large depression of the central basin and presents five lines in echelon arrangement along a northwest direction. Its development and evolution characteristics are low density and speed, and abnormally high temperature and overpressure. In contrast, the Southwest Taiwan Basin mud volcano is mainly distributed in a deep water slope area of the south sag and Tainan-Kaohsiung. Onshore mud volcanoes are mainly distributed along the deep and large fault zone, and their morphological characteristics are similar to venting volcanoes. The seabed morphology of offshore mud volcano seems similar, but current research is still insufficient. There are many types of associated hydrocarbon gases in mud diapir and mud volcano, but the high maturity coal-type hydrocarbon gas is the main one. The associated non-hydrocarbon gas is rich in CO2 and N-2, which is mainly derived from a CO2 source from inorganic crust. The source of both diapir and volcano is thick marine Miocene and Pliocene age mud with hydrocarbon-generating potential. The mature hydrocarbon generation, mud diapir/mud volcano migration and deposition into an appropriate reservoir, as well as diapir-associated structures, constitute a unique oil/gas migration and accumulation system, which thus adds to our understanding of the distribution of such "mud diapir/volcano-type oil/gas reservoir."
Department[He, Jiaxiong; Wang, Shuhong; Zhang, Wei; Yan, Wen] Chinese Acad Sci, Guangzhou Inst Geochem, South China Sea Inst Oceanol, CAS Key Lab Marginal Sea Geol, Guangzhou 510000, Guangdong, Peoples R China; [Wang, Shuhong] Minist Land & Resources, Key Lab Marine Mineral Resources, Guangzhou 510075, Guangdong, Peoples R China; [Lu, Zhenquan] Chinese Acad Geol Sci, Inst Mineral Resources, Beijing 100037, Peoples R China ; 边缘海地质
KeywordMud Diapir Mud Volcano Oil/gas Migration And Accumulation Yinggehai Basin Southwest Taiwan Basin
Subject AreaEnvironmental Sciences & Ecology ; Geology ; Water Resources
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/15332
Collection中科院边缘海地质重点实验室
Corresponding AuthorWang, SH (reprint author), Chinese Acad Sci, Guangzhou Inst Geochem, South China Sea Inst Oceanol, CAS Key Lab Marginal Sea Geol, Guangzhou 510000, Guangdong, Peoples R China.; Wang, SH (reprint author), Minist Land & Resources, Key Lab Marine Mineral Resources, Guangzhou 510075, Guangdong, Peoples R China.
Recommended Citation
GB/T 7714
He, Jiaxiong,Wang, Shuhong,Zhang, Wei,et al. Characteristics of mud diapirs and mud volcanoes and their relationship to oil and gas migration and accumulation in a marginal basin of the northern South China Sea[J]. ENVIRONMENTAL EARTH SCIENCES,2016,75(15):1122.
APA He, Jiaxiong.,Wang, Shuhong.,Zhang, Wei.,Yan, Wen.,Lu, Zhenquan.,...&Wang, SH .(2016).Characteristics of mud diapirs and mud volcanoes and their relationship to oil and gas migration and accumulation in a marginal basin of the northern South China Sea.ENVIRONMENTAL EARTH SCIENCES,75(15),1122.
MLA He, Jiaxiong,et al."Characteristics of mud diapirs and mud volcanoes and their relationship to oil and gas migration and accumulation in a marginal basin of the northern South China Sea".ENVIRONMENTAL EARTH SCIENCES 75.15(2016):1122.
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