| Fine-grained Pleistocene deepwater turbidite channel system on the slope of Qiongdongnan Basin, northern South China Sea | |
| Yuan, Shengqiang1,2; Wu, Shiguo1,3; Luedmann, Thomas4; Yao, Genshun1,2,5; Lv, Fuliang5; Cao, Feng6; Wang, Hairong7; Li, Li5 | |
| 2009-09-01 | |
| 发表期刊 | MARINE AND PETROLEUM GEOLOGY
 |
| ISSN | 0264-8172 |
| 卷号 | 26期号:8页码:1441-1451 |
| 文章类型 | Article |
| 摘要 | Recently, as oil exploitation has become focused on deepwater slope areas. more multi-channel high resolution 2D and 3D seismic data were acquired in the deepwater part of the Qiongdongnan Basin, northern South China Sea. Based on 3D seismic data and coherence time slice, RMS and 3D visualization, a series of deepwater channels were recognized on the slope that probably developed in the late Quaternary period. These channels trend SW-NE to W-E and show bifurcations, levees, meander loops and avulsions. High Amplitude Reflections (HARs), typical for channel-levee complexes, are of only minor importance and were observed in one of the channel systems. Most of the detected channels are characterized by low-amplitude reflections, and so are different from the typical coarse-grained turbidite channels that had been discovered worldwide. The absence of well data in the study area made it difficult to determine the age and lithology of these channels. Using a neighboring drill hole and published data about such depositional systems worldwide, the lithology of these channels is likely to be dominated by mudstones with interbedded thin sandstones. These channels are formed by turbidity currents originated from the little scale mountain river of mid-Vietnam in SW direction and were probably accompanied by a relative sea level drop in the last glacial age. These channels discovered on the northern South China Sea slope are likely to be fine-grained, mud-dominant and low N:G deposits in a deepwater paleogeographic setting. (C) 2009 Elsevier Ltd. All rights reserved.; Recently, as oil exploitation has become focused on deepwater slope areas. more multi-channel high resolution 2D and 3D seismic data were acquired in the deepwater part of the Qiongdongnan Basin, northern South China Sea. Based on 3D seismic data and coherence time slice, RMS and 3D visualization, a series of deepwater channels were recognized on the slope that probably developed in the late Quaternary period. These channels trend SW-NE to W-E and show bifurcations, levees, meander loops and avulsions. High Amplitude Reflections (HARs), typical for channel-levee complexes, are of only minor importance and were observed in one of the channel systems. Most of the detected channels are characterized by low-amplitude reflections, and so are different from the typical coarse-grained turbidite channels that had been discovered worldwide. The absence of well data in the study area made it difficult to determine the age and lithology of these channels. Using a neighboring drill hole and published data about such depositional systems worldwide, the lithology of these channels is likely to be dominated by mudstones with interbedded thin sandstones. These channels are formed by turbidity currents originated from the little scale mountain river of mid-Vietnam in SW direction and were probably accompanied by a relative sea level drop in the last glacial age. These channels discovered on the northern South China Sea slope are likely to be fine-grained, mud-dominant and low N:G deposits in a deepwater paleogeographic setting. (C) 2009 Elsevier Ltd. All rights reserved. |
| 关键词 | South China Sea Qiongdongnan Basin Slope Deepwater Area Channel Complex Turbidity Current Seismic Attribute |
| 学科领域 | Geosciences, Multidisciplinary |
| DOI | 10.1016/j.marpetgeo.2009.03.007 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000270330300009 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/3724 |
| 专题 | 海洋地质与环境重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Marine Geol & Environm, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.China Univ Petr, Qingdao 266555, Peoples R China 4.Univ Hamburg, Inst Biogeochem & Marine Chem, Ctr Marine & Atmospher Sci, D-20146 Hamburg, Germany 5.PetroChina Hangzhou Inst Geol, Hangzhou 310023, Zhejiang, Peoples R China 6.Res Inst Petr Explorat & Dev, Beijing 10003, Peoples R China 7.China Univ Geosci, Beijing 100083, 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 | Yuan, Shengqiang,Wu, Shiguo,Luedmann, Thomas,et al. Fine-grained Pleistocene deepwater turbidite channel system on the slope of Qiongdongnan Basin, northern South China Sea[J]. MARINE AND PETROLEUM GEOLOGY,2009,26(8):1441-1451. |
| APA | Yuan, Shengqiang.,Wu, Shiguo.,Luedmann, Thomas.,Yao, Genshun.,Lv, Fuliang.,...&Li, Li.(2009).Fine-grained Pleistocene deepwater turbidite channel system on the slope of Qiongdongnan Basin, northern South China Sea.MARINE AND PETROLEUM GEOLOGY,26(8),1441-1451. |
| MLA | Yuan, Shengqiang,et al."Fine-grained Pleistocene deepwater turbidite channel system on the slope of Qiongdongnan Basin, northern South China Sea".MARINE AND PETROLEUM GEOLOGY 26.8(2009):1441-1451. |
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