Modern geological processes in the Xisha Trough on the margin of acarbonate platform:Evidence from the geological observation by manned submersible

CHEN Wanli

doi:10.16562/j.cnki.0256-1492.2018.06.005

Marine Geology & Quaternary Geology > 2018 > 38(6): 46-55. > DOI: 10.16562/j.cnki.0256-1492.2018.06.005

CHEN Wanli. Modern geological processes in the Xisha Trough on the margin of acarbonate platform:Evidence from the geological observation by manned submersible[J]. Marine Geology & Quaternary Geology, 2018, 38(6): 46-55. DOI: 10.16562/j.cnki.0256-1492.2018.06.005

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Modern geological processes in the Xisha Trough on the margin of acarbonate platform:Evidence from the geological observation by manned submersible

CHEN Wanli

Laboratory of Marine Geophysics and Georesources, Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China

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Received Date: June 25, 2018
Revised Date: September 13, 2018

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Abstract

Abstract

The Xisha Trough in the northern part of the South China Sea has existed for a long time. Deepwater processes of the South China Sea are well recorded in the trough. Therefore, it has special implications for deepwater geology. According to the geological observation of the manned submersible, the bottom plain of the trough can be subdivided into several sub-order geomorphic units, such as small grooves, large symmetrical ridges and flat-top ridges, as the results of the joint action of episodic turbidity current and near east-west bottom flow. Some small sand dunes are also observed, which are interpreted as the nozzle of overpressure gas or living caves of small animals. In the Xisha Trough, biological diversity is low since the small number of species and the harsh living conditions. It could be called the "desert of seabed". Abnormal high pressure gas is found in the argillaceous sediments in this area, probably caused by high rate of sedimentation.
- geological observation by manned submersible,
- topographic features,
- biological species,
- abnormal high pressure gas,
- Xisha Trough

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References (23)

References

[1]	刘保华, 丁忠军, 史先鹏, 等.载人潜水器在深海科学考察中的应用研究进展[J].海洋学报, 2015, 37(10):1-10. doi: 10.3969/j.issn.0253-4193.2015.10.001 LIU Baohua, DING Zhongjun, SHI Xianpenget al. Progress of the application and research of manned submersibles used in deep sea scientific investigations[J]. Acta Oceanologica Sinica, 2015, 37(10):1-10. doi: 10.3969/j.issn.0253-4193.2015.10.001
[2]	Wang D, Wu S, Wang Y, et al. Deep-water sediment cycles in the QiongdongnanBasin[J]. Chinese Journal, 2015, 60(10):933.
[3]	王大伟, 白宏新, 吴时国.浊流及其相关的深水底形研究进展[J].地球科学进展, 2018, 33(1):52-65. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=dqkxjz201801005 WANG Dawei, BAI Hongxin, WU Shiguo. The researchprogress of turbidity currents and related deep-water bedforms[J]. Advances in EarthScience, 2018, 33 (1): 52-65. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=dqkxjz201801005
[4]	Normark W R, Hess G R, Stow D A V, et al. Sediment waves on the monterey fan levee: A preliminary physical interpretation[J]. Marine Geology, 1980, 37(1):1-18. https://www.researchgate.net/publication/248459960_Sediment_waves_on_the_Monterey_Fan_levee_A_preliminary_physical_interpretation
[5]	Wynn R B, Masson D G, Stow D A V, et al. Turbidity current sediment waves on the submarine slopes of the western Canary Islands[J]. Marine Geology, 2000, 163(1):185-198. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=764a690ffc2a5753c2e01d2eb3b20254
[6]	Cartigny M J B, Postma G, Berg J H V D, et al. A comparative study of sediment waves and cyclic steps based on geometries, internal structures and numerical modeling[J]. Marine Geology, 2011, 280(1-4):40-56. doi: 10.1016/j.margeo.2010.11.006
[7]	徐景平.科学与技术并进——近20年来海底峡谷浊流观测的成就和挑战[J].地球科学进展, 2013, 28(5):552-558. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=dqkxjz201305006 XUJingping. Accomplishments and challenges in measuring turbidity currents in submarine canyons[J]. Advances in Earth Science, 2013, 28(5): 552-558. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=dqkxjz201305006
[8]	Xu J P. Normalized velocity profiles of field-measured turbidity currents[J]. Geology, 2010, 38(6):563-566. doi: 10.1130/G30582.1
[9]	Zhong G, Cartigny M J B, Kuang Z, et al. Cyclic steps along the South Taiwan Shoal and West Penghu submarine canyons on the northeastern continental slope of the South China Sea[J]. Geological Society of America Bulletin, 2015, 127(5-6):804-824. doi: 10.1130/B31003.1
[10]	姚伯初, 曾维军.南海西沙海槽——一条古缝合线[J].海洋地质与第四纪地质, 1994, 14(1): 1-10. http://www.cnki.com.cn/Article/CJFDTotal-HYDZ401.000.htm YAO Bochu, ZENG Weijun, CHEN yi zhong, et al. Xisha Trough of South China Sea-an ancient suture[J]. Marine Geology & Quaternary Geology, 1994, 14(1): 1-10. http://www.cnki.com.cn/Article/CJFDTotal-HYDZ401.000.htm
[11]	万玲, 曾维军, 吴能友, 等.南海北部陆缘西沙海槽-台湾恒春半岛地学断面[J].中国地质, 2009, 36(3):564-572. doi: 10.3969/j.issn.1000-3657.2009.03.006 WAN Ling, ZENG Weijun, WU Nengyou, et al. Geotransect from Xisha Trough in the northern continental slope of the South China Sea to Hengchun Peninsular in Taiwan[J]. Geology in China, 2009, 36(3):564-572. doi: 10.3969/j.issn.1000-3657.2009.03.006
[12]	丘学林, 叶三余.南海西沙海槽地壳结构的海底地震仪探测与研究[J].热带海洋学报, 2000, 19(2):9-18. doi: 10.3969/j.issn.1009-5470.2000.02.002 QIU Xuelin, YE Sanyu. OBH experiment and crustal structure of Xisha Trough, South China Sea[J]. Tropic Oceanology, 2000, 19(2):9-18. doi: 10.3969/j.issn.1009-5470.2000.02.002
[13]	涂广红, 钟广见, 冯常茂, 等.南海西沙海槽盆地重磁资料综合研究[J].地球物理学进展, 2015, 30(2):963-974. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=dqwlxjz201502066 TU Guanghong, ZHONG Guangjian, FENG Changmao, et al.2015. Comprehensive Research on Geological Characteristics of Xisha Trough Basin in South China Sea Using Gravity- Magnetic data[J]. Progress in Geophysics, 2015, 30(2): 963-974. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=dqwlxjz201502066
[14]	熊斌辉, 刘春成, 郭瑞.西沙海槽沉积模式[C]//中国地质学会2009年学术年会. 2009: 1-9. http://www.cnki.com.cn/Article/CJFDTotal-HYSY200904001.htm XIONG Binhui, LIU Chuncheng, GUO Rui. The depositional model of Xisha Trough[C]// 2009 annual meeting of the Chinese Geological Society. 2009: 1-9. http://www.cnki.com.cn/Article/CJFDTotal-HYSY200904001.htm
[15]	Chen H, Xie X, Zhang W, et al. Deep-water sedimentary systems and their relationship with bottom currents at the intersection of Xisha Trough and Northwest Sub-Basin, South China Sea[J]. Marine Geology, 2016, 378:101-113. doi: 10.1016/j.margeo.2015.11.002
[16]	Qin Z, Wu S, Wang D, et al. Mass transport deposits and processes in the north slope of the Xisha Trough, northern South China Sea[J]. Acta Oceanologica Sinica, 2015, 34(9):117-125. doi: 10.1007/s13131-015-0608-9
[17]	刘方兰, 吴庐山.西沙海槽海域地形地貌特征及成因[J].海洋地质与第四纪地质, 2006, 26(3):7-14. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=hydzydsjdz200603002 LIU Fanglan, WU Lushan. Topographic and morphologic characteristics and genesis analysis of Xisha Trough sea area in the South China Sea[J]. Marine Geology & Quaternary Geology, 2006, 26(3):7-14. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=hydzydsjdz200603002
[18]	熊斌辉.构造控制下的西沙海槽沉积模式[J].海洋石油, 2013, 33(1):1-6. doi: 10.3969/j.issn.1008-2336.2013.01.001 XIONG Binhui. Xisha trough depositional model under controlling by structure[J], Offshore Oil, 2013, 33(1): 1-6. doi: 10.3969/j.issn.1008-2336.2013.01.001
[19]	Chen D F, Huang Y Y, Yuan X L, et al. Seep carbonates and preserved methane oxidizing archaea and sulfate reducing bacteria fossils suggest recent gas venting on the seafloor in the Northeastern South China Sea[J]. Marine & Petroleum Geology, 2005, 22(5):613-621. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=9f4d88b8f92ea4c932a238c80ce23664
[20]	Wang J, Wu S, Kong X, et al. Subsurface fluid flow at an active cold seep area in the Qiongdongnan Basin, northern South China Sea[J]. Journal of Asian Earth Sciences, 2018, 168:17-26. doi: 10.1016/j.jseaes.2018.06.001
[21]	Liang Q, Hu Y, Feng D, et al. Authigenic carbonates from newly discovered active cold seeps on the northwestern slope of the South China Sea: Constraints on fluid sources, formation environments, and seepage dynamics[C]//Deep Sea Research Part I Oceanographic Research Papers. 2017: 124. https://www.sciencedirect.com/science/article/pii/S0967063716302448
[22]	王宏语, 孙春岩, 张洪波, 等.西沙海槽潜在天然气水合物成因及形成地质模式[J].海洋地质与第四纪地质, 2005, 25(4):85-91. http://d.old.wanfangdata.com.cn/Periodical/hydzydsjdz200504014 WANG Hongyu, SUN Chunyan, ZHANG Hongbo, et al. Origin and genetic model of potential gas hydrates in Xisha Trough, South China Sea[J]. Marine Geology & Quaternary Geology, 2005, 25(4):85-91. http://d.old.wanfangdata.com.cn/Periodical/hydzydsjdz200504014
[23]	陈忠, 黄奇瑜, 颜文, 等.南海西沙海槽的碳酸盐结壳及其对甲烷冷泉活动的指示意义[J].热带海洋学报, 2007, 26(2):26-33. doi: 10.3969/j.issn.1009-5470.2007.02.005 CHEN Zhong, HUANG Qiyu, YAN Wen, et al. Authigenic carbonates as evidence for seeping fluids in Xisha Trough of South China Sea[J]. Joutnal of Tropical Oceanography, 2007, 26(2):26-33. doi: 10.3969/j.issn.1009-5470.2007.02.005