| 3D seismic interpretation of dissolution pipes in the South China Sea: Genesis by subsurface, fluid induced collapse | |
Sun, Qiliang1; Cartwright, Joe2; Wu, Shiguo1; Chen, Duanxin1,3; Sun, QL
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| 2013-03-01 | |
| 发表期刊 | MARINE GEOLOGY
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| ISSN | 0025-3227 |
| 卷号 | 337页码:171-181 |
| 文章类型 | Article |
| 摘要 | A large suite of remarkable pipe structures has been identified from high-resolution 3D seismic data, in the Dongsha Massif, northern South China Sea. The diameters and heights of the collapse structures range from c. 100 m to 710 m and c. 134 m to 1010 m, respectively. These pipes vary from cylindrical to a steep conical geometry, narrowing upwards. They are rooted in a major carbonate succession that was originally deposited as a large carbonate platform system. These pipe structures are interpreted as resulting from carbonate diagenesis and dissolution at a deep burial stage, i.e. they are not classical karst collapse structures as suggested in previous studies. Instead they are analogous to pipe-like collapse structures described from the Ordovician Ellenburger Group of West Texas. The dissolution pipes formed at different times during the Neogene, with the earliest pipes developing during the early Middle Miocene (15.0 Ma) and with at least one peak of pipe formation during the Dongsha Event (began at 5.5 Ma). This regional event was associated with magma intrusion, uplifting and faulting in the study area. Stable isotope data of reservoir rocks in the area of pipe development suggest that cementation was linked to magmatically driven hydrothermal circulation during the Dongsha Event. Small-scale pipes are densely clustered above the main oil reservoir, and given that petroleum is known to have been generated during the time interval of pipe formation, we suggest that corrosive carbonic acid derived from flushing of petroleum reservoirs may have been a contributory factor to the dissolution and collapse process. (C) 2013 Elsevier B.V. All rights reserved.; A large suite of remarkable pipe structures has been identified from high-resolution 3D seismic data, in the Dongsha Massif, northern South China Sea. The diameters and heights of the collapse structures range from c. 100 m to 710 m and c. 134 m to 1010 m, respectively. These pipes vary from cylindrical to a steep conical geometry, narrowing upwards. They are rooted in a major carbonate succession that was originally deposited as a large carbonate platform system. These pipe structures are interpreted as resulting from carbonate diagenesis and dissolution at a deep burial stage, i.e. they are not classical karst collapse structures as suggested in previous studies. Instead they are analogous to pipe-like collapse structures described from the Ordovician Ellenburger Group of West Texas. The dissolution pipes formed at different times during the Neogene, with the earliest pipes developing during the early Middle Miocene (15.0 Ma) and with at least one peak of pipe formation during the Dongsha Event (began at 5.5 Ma). This regional event was associated with magma intrusion, uplifting and faulting in the study area. Stable isotope data of reservoir rocks in the area of pipe development suggest that cementation was linked to magmatically driven hydrothermal circulation during the Dongsha Event. Small-scale pipes are densely clustered above the main oil reservoir, and given that petroleum is known to have been generated during the time interval of pipe formation, we suggest that corrosive carbonic acid derived from flushing of petroleum reservoirs may have been a contributory factor to the dissolution and collapse process. (C) 2013 Elsevier B.V. All rights reserved. |
| 关键词 | Dissolution Pipe Carbonate Dissolution Deep-burial Diagenesis Hydrothermal Fluid Plume Hydrocarbon Degradation South China Sea |
| 学科领域 | Geology ; Oceanography |
| DOI | 10.1016/j.margeo.2013.03.002 |
| URL | 查看原文 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Geology ; Oceanography |
| WOS类目 | Geosciences, Multidisciplinary ; Oceanography |
| WOS记录号 | WOS:000320085400013 |
| WOS关键词 | RIVER MOUTH BASIN ; CONTINENTAL-MARGIN ; CARBONATE RESERVOIRS ; ZHUJIANG FORMATION ; FAULT SYSTEMS ; BURIAL ; FIELD ; EVOLUTION ; POROSITY ; HISTORY |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/16281 |
| 专题 | 海洋地质与环境重点实验室 |
| 通讯作者 | Sun, QL |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Cardiff Univ, Sch Earth & Ocean Sci, Lab 3D, Cardiff CF10 3YE, S Glam, Wales 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Sun, Qiliang,Cartwright, Joe,Wu, Shiguo,et al. 3D seismic interpretation of dissolution pipes in the South China Sea: Genesis by subsurface, fluid induced collapse[J]. MARINE GEOLOGY,2013,337:171-181. |
| APA | Sun, Qiliang,Cartwright, Joe,Wu, Shiguo,Chen, Duanxin,&Sun, QL.(2013).3D seismic interpretation of dissolution pipes in the South China Sea: Genesis by subsurface, fluid induced collapse.MARINE GEOLOGY,337,171-181. |
| MLA | Sun, Qiliang,et al."3D seismic interpretation of dissolution pipes in the South China Sea: Genesis by subsurface, fluid induced collapse".MARINE GEOLOGY 337(2013):171-181. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| 3D seismic interpret（4666KB） | 限制开放 | CC BY-NC-SA | 浏览 | |||
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