EVOLUTION AND GENESIS OF SEABED POCKMARKS IN GABON COASTAL BASIN

WANG Jian; DU Xiangdong; ZHANG Shulin; YIN Chuan; LI Ping

doi:10.16562/j.cnki.0256-1492.2015.06.009

2015 Vol. 35, No. 6

Article Contents

Article navigation > Marine Geology & Quaternary Geology > 2015 > 35(6): 87-92

Next Article Previous Article

WANG Jian, DU Xiangdong, ZHANG Shulin, YIN Chuan, LI Ping. EVOLUTION AND GENESIS OF SEABED POCKMARKS IN GABON COASTAL BASIN[J]. Marine Geology & Quaternary Geology, 2015, 35(6): 87-92. doi: 10.16562/j.cnki.0256-1492.2015.06.009

Citation:

WANG Jian, DU Xiangdong, ZHANG Shulin, YIN Chuan, LI Ping. EVOLUTION AND GENESIS OF SEABED POCKMARKS IN GABON COASTAL BASIN[J]. Marine Geology & Quaternary Geology, 2015, 35(6): 87-92. doi: 10.16562/j.cnki.0256-1492.2015.06.009

EVOLUTION AND GENESIS OF SEABED POCKMARKS IN GABON COASTAL BASIN

CNOOC Research Institute, Beijing 100027

Received Date: 17 March 2015

Revised Date: 11 July 2015

Abstract

Abstract

Seabed pockmarks are the records of escaping gas or liquid through the sediment.They could be the direct indication of hydrocarbons.A lot of seabed pockmarks have been found in the Gabon Coastal Basin. The seabed pockmarks appear as pulling-down seismic reflection characters in seismic profiles with anomaly attributes.The distribution of seabed pockmarks in this area is closely related with the activity of salt.Fault and gas chimney can be the channel for gas escape.The evolution and genesis of seabed pockmarks in the basin are researched with 3Dseismics and it is proved that the information is useful for petroleum exploration in the basin.
- seabed pockmark /
- salt /
- fault /
- gas chimney /
- Gabon Coastal Basin

FullText(HTML)

References

[1]	King L H,Maclean B.Pockmarks on Scotian Shelf[J].Geological Society of America Bulletin,1970,81(10):3141-3148. Google Scholar
[2]	Hovland M,Talbot M R,Qvale H,et al.Methane-related carbonate cements in pockmarks of the North-sea[J].Journal of Sedimentary Petrology,1987,57(5):881-892. Google Scholar
[3]	Kelley J T,Dickson S M,Belknap D F,et al.Giant seabed pockmarks:Evidence for gas escape from Belfast Bay,Maine[J].Geology,1994,22(1):59-62. Google Scholar
[4]	Anders Solheim,Anders Elverhoi.A pockmark field in the Central Barents Sea;Gas from a petrogenic source[J].Polar Research,1985,3:11-19. Google Scholar
[5]	Eric Cauquil,Jerome Adamy.TOTAL,Seabed imagery and chemosynthetic communities:examples from deep offshore west Africa,Offshore Technology Conference[C].2008. Google Scholar
[6]	陈林,宋海斌.海底天然气渗漏的地球物理特征及识别方法[J],地球物理学进展,2005,20(4):1067-1073. Google Scholar [CHEN Lin, SONG Haibin.Geophysical features and identification of natural gas seepage in marine environment[J].Progress in Geophysics, 2005,20(4):1067-1073.] Google Scholar
[7]	李磊,裴都,都鹏燕,等.海底麻坑的构型、特征、演化及成因-以西非木泥河盆地陆坡为例[J].海相油气地质,2013,18(4):53-59. Google Scholar [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):53-59.] Google Scholar
[8]	Gay A,Lopez M,Cochonat P,et al.Isolated seafloor pockmarks linked to BSRs,fluid chimneys,polygonal faults and stacked Oligocene-Miocene turbidity palaeochannels in the Lower Congo Basin[J].Marine Geology,2006,226(1/2):25-40. Google Scholar
[9]	邸鹏飞,黄华谷,黄保家,等.莺歌海盆地海底麻坑的形成与泥底辟发育和流体活动的关系[J].热带海洋学报,2012,31(5):26-36. Google Scholar [DI Pengfei,HUANG Huagu,HUANG Baojia,et al. Seabed pockmark formation associated with mud diapir development and fluid activities in the Yinggehai Basin of the South China Sea[J].Journal of Tropical Oceanography,2012,31(5):26-36.] Google Scholar
[10]	王健,邱文弦,赵俐红.天然气水合物发育的构造背景分析[J].地质科技情报,2010,29(2):100-106. Google Scholar [WANG Jian, QIU Wenxuan,ZHAO Lihong,Tectonic settings analysis of gas hydrate deposits development[J].Geological Science and Technology Information,2010,29(2):100-106.] Google Scholar
[11]	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):33-42. Google Scholar [LUO Min,WU Lushan,CHEN Duofu.Research status and progress of seabed pockmarks[J].Marine Geology Frontiers,2012,28(5):33-42.] Google Scholar
[12]	Somoza L,Medialdea T,Leon R,et al.Structure of mud volcano systems and pockmarks in the region of the Ceuta contourite depositional system[J].Marine Geology,2012, 332-334(1):4-26. Google Scholar
[13]	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. Google Scholar
[14]	Andresen K J,Huuse M,Schodt N H,et al.Hydrocarbon plumbing systems of salt minibasins offshore Angola revealed by three-dimensional seismic analysis[J].AAPG Bulletin, 2011,95(6):1039-1065. Google Scholar
[15]	Sultan N,Marsset B,Ker S,et al.Hydrate dissolution as a potential mechanism for pockmark formation in the Niger delta[J].Journal of Geophysical Research,2010,115(B8):1-33. Google Scholar