Gas Hydrate Accumulation Related to Pockmarks and Faults in the Zhongjiannan Basin, South China Sea
文献类型：期刊论文
| 作者 | Zhang, Guangxu2,7,8; Wang, Xiujuan1,6,7; Li, Lin5; Sun, Luyi2,7,8; Guo, Yiqun4; Lu, Yintao5 ; Li, Wei3; Wang, Zhaoqi5; Qian, Jin2,7,8; Yang, Taotao5
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| 刊名 | FRONTIERS IN EARTH SCIENCE
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| 出版日期 | 2022-06-17 |
| 卷号 | 10页码:18 |
| 关键词 | gas hydrate high amplitude anomalies polygonal fault pockmarks Zhongjiannan basin |
| DOI | 10.3389/feart.2022.902469 |
| 通讯作者 | Wang, Xiujuan(wangxiujuan@ouc.edu.cn) ; Li, Lin(lilin_hz@petrochina.com.cn) |
| 英文摘要 | The amplitude and coherence attributes of three-dimensional (3D) seismic data are used to confirm gas hydrate occurrence and to delineate its distribution in the Zhongjiannan basin, South China Sea. High amplitude anomalies (HAAs) are distributed above or below the regional base of gas hydrate stability zone (BGHSZ), which intersect with the bottom simulating reflectors (BSRs) or are interrupted by different types of pockmarks. The maximum amplitude attribute extracted along T1 (5.5 Ma) horizon is controlled by the widely distributed faults. The layer-bound polygonal faults (PFs) show networks of small normal faults, and the dominant orientations of PFs are similar or orthogonal to the regional tectonic faults, which provide the fluid migration pathways for gas and fluids to form HAAs. BSR shows the strong amplitude and continuous reflection where the faults or PFs can reach the BGHSZ without the influence of the pockmarks. Most of the pockmarks are related to the reactivation of faults and magmation, and some pockmarks are caused by the dissociation of gas hydrate. Around the matured pockmark, the BSR is discontinuous, and HAAs locally appear within the pockmarks. The inverted acoustic impedance profile shows obviously high values of HAAs except in pockmark zones. Partial HAAs occur above BGHSZ, and the continuity is interrupted by the pockmarks with only high values around the pockmarks. We propose that BSR, HAAs, pockmarks, and different types of faults are closely related to the occurrence and distribution of gas hydrates in the study area. This work allows us to understand the relationship between gas hydrate occurrence and accumulation with pockmarks, faults, and magmatic activities. |
| 资助项目 | Shandong Special Fund of Pilot National Laboratory for Marine Science and Technology (Qingdao)[2021QNLM020002] ; National Natural Science Foundation of China[42076219] ; China Academy of Petroleum Exploration and Development[2019B-4909] ; CAS Pioneer Hundred Talents Program |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000819865300001 |
| 出版者 | FRONTIERS MEDIA SA |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/179670]  |
| 专题 | 海洋研究所_海洋地质与环境重点实验室 |
| 通讯作者 | Wang, Xiujuan; Li, Lin |
| 作者单位 | 1.Ocean Univ China, MOE, Qingdao, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao, Peoples R China 3.Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Ocean & Marginal Sea Geol, Guangzhou, Peoples R China 4.China Geol Survey, Haikou Marine Geol Survey Ctr, Haikou, Peoples R China 5.Petrochina Hangzhou Res Inst Geol, Hangzhou, Peoples R China 6.Ocean Univ China, MOE, Frontiers Sci Ctr Deep Ocean Multispheres & Earth, Key Lab Submarine Geosci & Prospecting Tech, Qingdao, Peoples R China 7.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao, Peoples R China 8.Chinese Acad Sci, Inst Oceanol, Ctr Ocean Mega Sci, Qingdao, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Guangxu,Wang, Xiujuan,Li, Lin,et al. Gas Hydrate Accumulation Related to Pockmarks and Faults in the Zhongjiannan Basin, South China Sea[J]. FRONTIERS IN EARTH SCIENCE,2022,10:18. |
| APA | Zhang, Guangxu.,Wang, Xiujuan.,Li, Lin.,Sun, Luyi.,Guo, Yiqun.,...&Wang, Wenlong.(2022).Gas Hydrate Accumulation Related to Pockmarks and Faults in the Zhongjiannan Basin, South China Sea.FRONTIERS IN EARTH SCIENCE,10,18. |
| MLA | Zhang, Guangxu,et al."Gas Hydrate Accumulation Related to Pockmarks and Faults in the Zhongjiannan Basin, South China Sea".FRONTIERS IN EARTH SCIENCE 10(2022):18. |
入库方式： OAI收割
来源：海洋研究所
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