Seabed pockmarks and their bearing on salt movement in Lower Congo Basin of western African

FU Zhifang; SUN Ziming; GAO Jun; TENG Binbin

doi:10.16562/j.cnki.0256-1492.2018.04.014

Marine Geology & Quaternary Geology > 2018 > 38(4): 164-169. > DOI: 10.16562/j.cnki.0256-1492.2018.04.014

FU Zhifang, SUN Ziming, GAO Jun, TENG Binbin. Seabed pockmarks and their bearing on salt movement in Lower Congo Basin of western African[J]. Marine Geology & Quaternary Geology, 2018, 38(4): 164-169. DOI: 10.16562/j.cnki.0256-1492.2018.04.014

Citation:

PDF (3749 KB)

Seabed pockmarks and their bearing on salt movement in Lower Congo Basin of western African

Exploration and Production Research Institute, SINOPEC, Beijing 100083, China

More Information

Received Date: January 20, 2017
Revised Date: April 24, 2017

Graphical Abstract

Abstract

Abstract

Based on high resolution 3 D seismic data, the characteristics of seabed pockmarks and their relationship with salt movement are systematically studied in this paper.There are two types of pockmarks, i.e.the deep V-shaped and the shallow U-shaped pockmarks, distributed in the east and west of the study area respectively.The distribution pattern of pockmarks depends upon underlying salt movement.The V-type pockmark is resulted indirectly from the compressive stress on seabed caused by salt diapers in the east area, while the U-type pockmark resulted indirectly from the extensional stress on seabed caused by salt canopy in the west area.Both the pockmarks are formed by seabed rupturing and erupting of high pressure strata water directly triggered by underlying salt structure movements.
- Lower Congo Basin,
- deep V-type pockmark,
- shallow U-type pockmark,
- salt diaper,
- salt canopy

FullText(HTML)

References (21)

References

[1]	罗敏, 吴庐山, 陈多福.海底麻坑研究现状及进展[J].海洋地质前沿, 2012, 28 (5) :33-41. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=hydzdt201205006 LUO Min, WU Lushan, CHEN Duofu.Research status and progress of seabed pockmarks[J].Marine Geology Frontier, 2012, 28 (5) :33-41. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=hydzdt201205006
[2]	孙自明.下刚果-刚果扇盆地沉积-构造演化与油气勘探领域[J].现代地质, 2016, 30 (6) :1303-1310. doi: 10.3969/j.issn.1000-8527.2016.06.012 SUN Ziming.Sedimento-tectonic evolution and petroleum exploration domains of Lower Congo-Congo Fan Basin[J].Geoscience, 2016, 30 (6) :1303-1310. doi: 10.3969/j.issn.1000-8527.2016.06.012
[3]	范洪耀, 陶维祥, 张金淼, 等.下刚果-刚果扇盆地断裂特征及其对油气成藏的影响[J].海洋石油, 2012, 32 (1) :40-44. FAN Hongyao, TAO Weixiang, ZHANG Jinmiao, et al.The fracture characteristics and its impacts on hydrocarbon accumulation in Lower Congo Basin and Congo Fan Basin[J].Offshore Oil, 2012, 32 (1) :40-44.
[4]	邬长武, 熊利平, 陈焕杰, 等.下刚果-刚果扇盆地油气成藏分析及有利区评价[J].石油天然气学报, 2012, 34 (7) :17-21. doi: 10.3969/j.issn.1000-9752.2012.07.004 WU Changwu, XIONG Liping, CHEN Huanjie, et al.The main control factor of hydrocarbon accumulation and favorable area evaluation in Lower Congo-Congo Fan Basin[J].Journal of Oil and Gas Technology, 2012, 34 (7) :17-21. doi: 10.3969/j.issn.1000-9752.2012.07.004
[5]	蔡露露, 王雅宁, 王颖, 等.西非深水沉积类型特征及油气勘探意义[J].石油学报, 2016, 37 (1) :131-142. http://d.old.wanfangdata.com.cn/Periodical/syxb2016z1013 CAI Lulu, WANG Yaning, WANG Ying, et al.Type features and hydrocarbon exploration significance of deepwater sedimentary in West Africa[J].Acta Petrolei Sinica, 2016, 37 (1) :131-142. http://d.old.wanfangdata.com.cn/Periodical/syxb2016z1013
[6]	李涛, 胡望水, 于水, 等.西非被动大陆边缘重力滑脱构造体系下的塑性构造[J].海洋地质与第四纪地质, 2012, 32 (3) :69-76. http://www.wanfangdata.com.cn/details/detail.do?_type=conference&id=7267250 LI Tao, HU Wangshui, YU Shui, et al.ductile structures in gravitational decollement structure system at passive continental margin of west African[J].Marine Geology & Quaternary Geology, 2012, 32 (3) :69-76. http://www.wanfangdata.com.cn/details/detail.do?_type=conference&id=7267250
[7]	Marton G, Tari G Lehmann C.Evolution of the Angolan passive margin, West Africa, with emphasis on post-salt structural styles[C]//Atlantic Rifts and Continental Margins.American Geophysical Union, Geophysical Monograph Series, 2000, 115: 129-149.
[8]	李磊, 裴都, 都鹏燕, 等.海底麻坑的构型、特征、演化及成因[J].海相油气地质, 2013, 18 (4) :53-58. doi: 10.3969/j.issn.1672-9854.2013.04.008 LI Lei, PEI Du, DU Pengyan, et al.Architecture, character, evolution and genesis of seabed pockmarks:A case study to the continental slope in Rio Muni Basin, West Africa[J].Marine Origin Petroleum Geology, 2013, 18 (4) :53-58. doi: 10.3969/j.issn.1672-9854.2013.04.008
[9]	李学杰, 王大伟, 吴时国, 等.三沙海底峡谷识别与地貌特征分析[J].海洋地质与第四纪地质, 2017, 37 (3) :28-36. doi: 10.16562/j.cnki.0256-1492.2017.03.003 LI Xuejie1, WANG Dawei, WU Shiguo, et al.Geomorphology of Sansha canyon:identification and implication[J].Marine Geology & Quaternary Geology, 2017, 37 (3) :28-36. doi: 10.16562/j.cnki.0256-1492.2017.03.003
[10]	王一凡, 苏正, 苏明, 等.南海北部陆坡神狐海域沉积物失稳类型探讨[J].海洋地质与第四纪地质, 2017, 37 (5) :184-194. doi: 10.16562/j.cnki.0256-1492.2017.05.019 WANG Yifan, SU Zheng, SU Min, et al.Sediment failures in the shenhu area, northern continental slope of the south china sea[J].Marine Geology & Quaternary Geology, 2017, 37 (5) :184-194. doi: 10.16562/j.cnki.0256-1492.2017.05.019
[11]	Sahling H, Bohrmann G, Spiess V, et al.Pockmarks in the Northern Congo Fan area, SW Africa:Complex seafloor features shaped by fluid flow[J].Marine Geology, 2008, 249 (3/4) :206-225.
[12]	Gay A, Lopez M, Cochonat P, et al.Isolated seafloor pockmarks linked to BSRs, fluid chimneys, polygonal faults and stacked Oligocene-Miocene turbiditic palaeochannels in the Lower Congo Basin[J].Marine Geology, 2006, 26 (1/2) :25-40. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=65dbcb2c98b5e337bb5471b738aed5a5
[13]	顾兆峰, 张志, 刘怀山.南黄海西部地区浅层气地震特征[J].海洋地质与第四纪地质, 2006, 26 (3) :65-73. http://www.cnki.com.cn/Article/CJFDTotal-HYDZ200603011.htm GU Zhaofeng, ZHANG Zhi, LIU Huaishan.Seismic features of shallow gas in the western area of the Yellow Sea[J].Marine Geology & Quaternary Geology, 2006, 26 (3) :65-73. http://www.cnki.com.cn/Article/CJFDTotal-HYDZ200603011.htm
[14]	尚久靖, 吴庐山, 梁金强, 等.南海东北陆坡海底微地貌特征及其天然气渗漏模式[J].海洋地质前沿, 2013, 29 (12) :37-44. http://d.old.wanfangdata.com.cn/Periodical/hydzdt201312006 SHANG Jiujing, WU Lushan, LIANG Jinqiang, et al.Microtopographic features of the northeastern slope of the South China Sea and gas seepages[J].Marine Geology Frontiers, 2013, 29 (12) :37-44. http://d.old.wanfangdata.com.cn/Periodical/hydzdt201312006
[15]	孙启良, 吴时国, 陈端新, 等.南海北部深水盆地流体活动系统及其成藏意义[J].地球物理学报, 2014, 57 (12) :4053-4062. SUN Qiliang, WU Shiguo, CHEN Duanxin, et al.Focused fluid flow systems and their implications for hydrocarbon and gas hydrate accumulations in the deep-water basins of the northern south china sea[J].Chinese Journal of Geophysics, 2014, 57 (12) :4053-4062.
[16]	龚建明, 廖晶, 何拥军, 等.日本海天然气水合物气源成因及主控因素探讨[J].海洋地质与第四纪地质, 2017, 37 (5) :102-108. doi: 10.16562/j.cnki.0256-1492.2017.05.010 GONG Jianming, LIAO Jing, HE Yongjun, et al.Discussion on gas origins and main controlling factors for gas hydrates in the sea of Japan[J].Marine Geology & Quaternary Geology, 2017, 37 (5) :102-108. doi: 10.16562/j.cnki.0256-1492.2017.05.010
[17]	秦轲, 孙运宝, 赵铁虎, 等.南海北部陆坡神狐海域海底滑坡地球物理响应特征及其与流体活动相关性[J].海洋地质与第四纪地质, 2015, 35 (5) :69-76. http://www.cnki.com.cn/Article/CJFDTotal-HYDZ201505012.htm QIN Ke, SUN Yunbao, ZHAO Tiehu, et al.Seismic response and genetic mechanism of the submarine landslides in Shenhu area, South China Sea[J].Marine Geology & Quaternary Geology, 2015, 35 (5) :69-76. http://www.cnki.com.cn/Article/CJFDTotal-HYDZ201505012.htm
[18]	王剑, 杜向东, 张树林, 等.加蓬海岸盆地海底麻坑的成因机制及对油气勘探的指示[J].海洋地质与第四纪地质, 2015, 35 (6) :87-92. http://www.cnki.com.cn/Article/CJFDTotal-HYDZ201506015.htm WANG Jian, DU Xiangdong, ZHANG Shulin, et al.Evolution and genesis of seabed pockmarks in gabon coastal basin[J].Marine Geology & Quaternary Geology, 2015, 35 (6) :87-92. http://www.cnki.com.cn/Article/CJFDTotal-HYDZ201506015.htm
[19]	李进, 王淑红, 颜文, 等.海底泥火山及其与油气和天然气水合物的关系[J].海洋地质与第四纪地质, 2015, 37 (6) :204-214. http://www.cnki.com.cn/Article/CJFDTotal-HYDZ201706023.htm LI Jin, WANG Shuhong, YAN Wen, et al.Seabed mud volcano and its bearing on oil-gas and gas hydrate[J].Marine Geology & Quaternary Geology, 2015, 37 (6) :204-214. http://www.cnki.com.cn/Article/CJFDTotal-HYDZ201706023.htm
[20]	Harrington P K.Formation of pockmarks by pore-water escape[J].Geo-Marine Letters, 1985, 5 (3) :193-197. doi: 10.1007/BF02281638
[21]	Cole D, Stewart S A, Cartwrigh J A.Giant irregular pockmark crater in the Palaeogene of the Outer Moray Firth Basin, UK NorthSea[J].Marine and Petroleum Geology, 2000, 17 (5) :563-577. doi: 10.1016/S0264-8172(00)00013-1

Cited By

Cited by

Periodical cited type(2)

1.	裴发根，方慧，裴亮，何梅兴，仇根根. 天然气水合物电磁勘探研究进展. 地球物理学进展. 2020(02): 775-785 .
2.	陈杰，胡高伟，卜庆涛. BSR与CSEM识别天然气水合物的优缺点对比. 新能源进展. 2018(05): 448-460 .

Other cited types(3)

Get Citation

PDF

XML

Article views (2387) PDF downloads (12) Cited by(5)

Turn off MathJax

Article Contents

Abstract

References

Seabed pockmarks and their bearing on salt movement in Lower Congo Basin of western African