利用重磁资料研究西非中南段含盐盆地构造区划

纪晓琳, 王万银, 杜向东, 鲁宝亮, 黄兴文, 冯旭亮, 郭允. 2019. 利用重磁资料研究西非中南段含盐盆地构造区划. 地球物理学报, 62(4): 1502-1514, doi: 10.6038/cjg2019L0573
引用本文: 纪晓琳, 王万银, 杜向东, 鲁宝亮, 黄兴文, 冯旭亮, 郭允. 2019. 利用重磁资料研究西非中南段含盐盆地构造区划. 地球物理学报, 62(4): 1502-1514, doi: 10.6038/cjg2019L0573
JI XiaoLin, WANG WanYin, DU XiangDong, LU BaoLiang, HUANG XingWen, FENG XuLiang, GUO Yun. 2019. Tectonic division by gravity and magnetic anomaly data of salt-bearing basins, south-central section of West Africa. Chinese Journal of Geophysics (in Chinese), 62(4): 1502-1514, doi: 10.6038/cjg2019L0573
Citation: JI XiaoLin, WANG WanYin, DU XiangDong, LU BaoLiang, HUANG XingWen, FENG XuLiang, GUO Yun. 2019. Tectonic division by gravity and magnetic anomaly data of salt-bearing basins, south-central section of West Africa. Chinese Journal of Geophysics (in Chinese), 62(4): 1502-1514, doi: 10.6038/cjg2019L0573

利用重磁资料研究西非中南段含盐盆地构造区划

  • 基金项目:

    国家重点研发计划项目"典型覆盖区航空地球物理技术示范与处理解释软件平台开发"(2017YFC0602200)之课题"航空地球物理数据综合处理解释方法研究及软件开发"(2017YFC0602202)、国家科技重大专项"大型油气田及煤层气开发"之课题"大陆边缘盆地地球物理勘探关键技术攻关与应用技术研究"(2011ZX05030-004)和中央高校基本科研业务费专项资金(310826171007)联合资助

详细信息
    作者简介:

    纪晓琳, 女, 1986年生, 工程师, 博士, 主要从事重、磁位场理论及应用研究和教学工作.E-mail:jixl@chd.edu.cn

    通讯作者: 王万银, 男, 1962年生, 博士, 教授, 博士生导师, 主要从事重、磁位场理论及应用研究和教学工作.E-mail:wwy7902@chd.edu.cn
  • 中图分类号: P631

Tectonic division by gravity and magnetic anomaly data of salt-bearing basins, south-central section of West Africa

More Information
  • 西非中南段含盐盆地位于大西洋东岸浅海区,在构造演化的过渡阶段形成了巨厚的Aptian期蒸发盐岩,将该区分为盐上层、盐层和盐下层三个构造层序.而盐岩的遮蔽效应使得盐下层地震反射品质差、盐下层序研究程度低,致使裂谷主控断裂、裂谷规模及展布形态不清楚.本文利用重、磁资料覆盖面广、横向分辨能力强、受盐岩影响小的优势,结合地震及地质资料,研究了西非中南段含盐盆地盐下构造格局.通过研究表明,西非中南段含盐盆地整体呈现"东西分带,南北分块"的构造特征;重新厘定了里奥穆尼、加蓬、下刚果和宽扎4个含盐盆地边界;识别了2个盐下裂谷带及其内部28个盐下凹陷,盐下凹陷呈现垒堑相间的结构特征;推断了盐下一级断裂16条,二级断裂23条,呈现"东西拉张,北东走滑"的力学特征.该项研究成果为该区盐下地震层序再解释、盐下油气战略选区及下一步勘探部署提供了地球物理依据.

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  • 图 1 

    西非中南段含盐盆地构造特征

    Figure 1. 

    Tectonic characteristics of salt-bearing basins in the south-central section of West Africa

    图 2 

    海底地形图

    Figure 2. 

    Terrain of sea floor

    图 3 

    卫星测高重力异常图

    Figure 3. 

    Satellite altimetry gravity anomalie

    图 4 

    磁力异常图

    Figure 4. 

    Magnetic anomalies

    图 5 

    布格重力异常图

    Figure 5. 

    Bouguer gravity anomalies

    图 6 

    化极磁力异常图

    Figure 6. 

    Reduction to the pole (RTP) magnetic anomalies

    图 7 

    盐上层底界面深度图

    Figure 7. 

    Bottom depth of the upper salt layer

    图 8 

    盐层底界面深度图

    Figure 8. 

    Bottom depth of the salt layer

    图 9 

    盐层厚度图

    Figure 9. 

    Thickness of the salt layer

    图 10 

    盐下重力异常图

    Figure 10. 

    Gravity anomalies of subsalt

    图 11 

    盐下重力异常NVDR-THDR图

    Figure 11. 

    NVDR-THDR of gravity anomalies of subsalt

    图 12 

    化极磁力异常NVDR-THDR图

    Figure 12. 

    NVDR-THDR of RTP magnetic anomalies

    图 13 

    盐下重力异常垂向一阶导数图

    Figure 13. 

    Vertical first derivative of gravity anomalies of subsalt

    图 14 

    化极磁力异常垂向一阶导数图

    Figure 14. 

    First vertical derivative of RTP magnetic anomalies

    图 15 

    盐下剩余重力异常图

    Figure 15. 

    Residual gravity anomalies of subsalt

    图 16 

    断裂平面分布图

    Figure 16. 

    Distribution of faults

    图 17 

    1号剖面重磁推断与地震解释断裂对比图

    Figure 17. 

    Comparison of faults interpreted by gravity, magnetic anomalies and by seismic data for number 1 profile

    图 18 

    盆地边界及隆、坳分布图

    Figure 18. 

    Boundaries of basins and distribution of uplifts and depressions

    图 19 

    基底深度图

    Figure 19. 

    Depth of basement

    图 20 

    盐下沉积层厚度图

    Figure 20. 

    Thickness of subsalt sedimentary layer

    图 21 

    1号剖面层位解释结果及其重震联合反演结果

    Figure 21. 

    The results interpreted for sequence and recovery model by jointing gravity data and seismic cross section of number 1 profile

    图 22 

    盐下构造单元分布图

    Figure 22. 

    Distribution of tectonic units in subsalt

  •  

    Blaich O A, Tsikalas F, Faleide J I. 2008. Northeastern Brazilian margin:Regional tectonic evolution based on integrated analysis of seismic reflection and potential field data and modelling. Tectonophysics, 458(1-4):51-67. doi: 10.1016/j.tecto.2008.02.011

     

    Broucke O, Temple F, Rouby D, et al. 2004. The role of deformation processes on the geometry of mud-dominated turbiditic systems, Oligocene and Lower-Middle Miocene of the Lower Congo basin (West African Margin). Marine and Petroleum Geology, 21(3):327-348. doi: 10.1016/j.marpetgeo.2003.11.013

     

    Dickson W, Schiefelbein C, Zumberge J, et al. 2005. Basin analysis in Brazilian and west African conjugates: Combining disciplines to deconstruct petroleum systems.//GCSSEPM Foundation 25th Annual BOB F. Perkins Research Conference. Houston TX.

     

    Dickson W G, Fryklund R E, Odegard M E, et al. 2003. Constraints for plate reconstruction using gravity data-implications for source and reservoir distribution in Brazilian and West African margin basins. Marine and Petroleum Geology, 20(3-4):309-322. doi: 10.1016/S0264-8172(03)00039-4

     

    Dupré S, Bertotti G, Cloetingh S. 2007. Tectonic history along the South Gabon Basin:Anomalous early post-rift subsidence. Marine and Petroleum. Geology, 24(3):151-172. http://www.sciencedirect.com/science/article/pii/S0264817207000049

     

    Dupré S, Cloetingh S, Bertotti G. 2011. Structure of the Gabon Margin from integrated seismic reflection and gravity data. Tectonophysics, 506(1-4):31-45. doi: 10.1016/j.tecto.2011.04.009

     

    Gay A, Lopez M, Berndt C, et al. 2007. Geological controls on focused fluid flow associated with seafloor seeps in the Lower Congo Basin. Marine Geology, 244(1-4):68-92. doi: 10.1016/j.margeo.2007.06.003

     

    Guiraud M, Buta-Neto A, Quesne D. 2010. Segmentation and differential post-rift uplift at the Angola margin as recorded by the transform-rifted Benguela and oblique-to-orthogonal-rifted Kwanza basins. Marine and Petroleum Geology, 27(5):1040-1068. doi: 10.1016/j.marpetgeo.2010.01.017

     

    Hu W S, Li T, Yu S, et al. 2012. Tectonic revolution and forming mechanism of gravitational décollement structures in the passive continental margin of West Africa. Geotectonica et Metallogenia (in Chinese), 36(2):186-196. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=ddgzyckx201202005

     

    Ji X L, Wang W Y, Qiu Z Y. 2015. The research to the minimum curvature technique for potential field data separation. Chinese Journal of Geophysics (in Chinese), 58(3):1042-1058, doi:10.6038/cjg20150329.

     

    Kamgang P, Njonfang E, Nono A, et al. 2010. Petrogenesis of a silicic magma system:Geochemical evidence from Bamenda Mountains, NW Cameroon, Cameroon Volcanic Line. Journal of African Earth Science, 58(2):285-304. doi: 10.1016/j.jafrearsci.2010.03.008

     

    Letouzey J, Colletta B, Vially R, et al. 1995. Evolution of salt-related structures in compressional settings.//Jackson M P A, Roberts D G, Snelson S eds. Salt Tectonics: A Global Perspective. Oklahoma: AAPG, 65: 41-60.

     

    Li L, Wu M N, Li D R. 2005. Present hydrocarbon exploration situation and prospect of salt-bearing basin in gabon and its adjacent area. China Petroleum Exploration (in Chinese), 10(3):57-63, 68. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zgsykt200503012

     

    Li T, Hu W S, Hu F, et al. 2012. Gravitational decollement structural development characteristics and its evolutionary history of Rio Muni Basin. Journal of Oil and Gas Technology (in Chinese), 34(4):1-6. http://en.cnki.com.cn/Article_en/CJFDTotal-JHSX201204001.htm

     

    Liu G D. 1992. Geologic-Geophysic Features of China Seas and Adjacent Regions (in Chinese). Beijing:Science Press.

     

    Liu G D, Hao T Y, Liu Y K. 1996. The significance of gravity and magnetic research for knowing sedimentary basins. Progress in Geophysics (in Chinese), 11(2):1-15. http://en.cnki.com.cn/Article_en/CJFDTotal-DQWJ602.000.htm

     

    Liu Z D, Li J H. 2011. Control of salt structures on hydrocarbons in the passive continental margin of West Africa. Petroleum Exploration and Development (in Chinese), 38(2):196-202. doi: 10.1016/S1876-3804(11)60025-6

     

    Lu B L, Wang W Y, Du X D, et al. 2015. Review of tectonic-sedimentary features of the central-south section of West African continental margin basins. Advances in Marine Science (in Chinese), 33(3):414-428. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=hbhhy201503016

     

    Maus S, Barckhausen U, Benkenbosch H, et al. 2009.EMAG2:A 2-arc min resolution earth magnetic anomaly grid compiled from satellite, airborne, and marine magnetic measurements. Geochemistry, Geophysics, Geosystems, 10(8):1-12. http://d.old.wanfangdata.com.cn/Periodical/dqwlxjz201204063

     

    Moulin M, Aslanian D, Olivet J L, et al. 2005. Geological constraints on the evolution of the Angolan margin based on reflection and refraction seismic data (Zaïango project). Geophysical Journal International, 162(3):793-810. doi: 10.1111/gji.2005.162.issue-3

     

    Mounguengui M M, Guiraud M. 2009. Neocomian to early Aptian syn-rift evolution of the normal to oblique-rifted North Gabon Margin (Interior and N'Komi Basins). Marine and Petroleum Geology, 26(6):1000-1017. doi: 10.1016/j.marpetgeo.2008.11.001

     

    Mounguengui M M, Lang J, Guiraud M. 2008. Sedimentary dynamics and extensional structuring related to early Cretaceous rifting of Neocomian and Barremian deposits of the interior basin of Gabon. Journal of African Earth Sciences, 51(5):239-256 doi: 10.1016/j.jafrearsci.2008.01.008

     

    Rao Y Q. 2012. Petroleum geological features and exploration prospect of Gabon coastal Basin. Inner Mongulia Petrochemical Industry (in Chinese), (1):147-149. http://en.cnki.com.cn/Article_en/CJFDTotal-NMSH201201076.htm

     

    Sandwell D T, Garcia E, Soofi K, et al. 2013. Towards 1-mGal accuracy in global marine gravity from CrySat-2, Envisat, and Jasom-1. The Leading Edge, 32(8):892-899.doi:10.1190/tle32080892.1.

     

    Sandwell D T, Müller R D, Smith W H F, et al. 2013. New global marine gravity model from CrySat-2 and Jasom-1 reveals buried tectonic structure. Science, 346(6205):65-67. https://science.sciencemag.org/content/346/6205/65

     

    Sandwell D T, Smith W H F. 2009. Global marine gravity from retracked Geosat and ERS-1 altimetry:Ridge Segmentation versus spreading rate. J.Geophys. Res., 114:B01411:1-Bo1411:18, .doi:10.1029/2008JB006008.

     

    Teisserence P, Villemin J. 1990. Sedimentary basin of Gabon-Geology and oil systems.//Edwards J D, Santogrossi P A eds. Divergent/passive margin Basins. AAPG, 48: 117-199.

     

    Turner J P, Rosendahl B R, Wilson P G. 2003. Structure and evolution of an obliquely sheared continental margin:Rio Muni, West Africa. Tectonophysics, 374(1-2):41-55. doi: 10.1016/S0040-1951(03)00325-1

     

    Wang J. Analysis on sub-salt structural characteristics and exploration direction of block LT2000 in Gabon. Journal of Oil and Gas Technology (in Chinese), 2012, 34(1):35-40. http://en.cnki.com.cn/Article_en/CJFDTOTAL-JHSX201201008.htm

     

    Wang W Y, Pan Y, Qiu Z Y. 2009. A new edge recognition technology based on the normalized vertical derivative of the total horizontal derivative for potential field data. Applied Geophysics, 6(3):226-233. doi: 10.1007/s11770-009-0026-x

     

    Wang W Y, Pan Z S. 1993. Fast solution of forward and inverse problems for gravity field in a dual interface model. Geophysical Prospecting for Petroleum (in Chinese), 32(2):81-123. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK000003044210

     

    Wang W Y, Qiu Z Y, Yang Y, et al. 2010. Some advances in the edge recognition of the potential field. Progress in Geophysics (in Chinese), 25(1):196-210, doi:10.3969/j.issn.1004-2903.2010.01.027.

     

    Xiong L P, Liu Y L, Huo H. 2010. Comparison of the hydrocarbon accumulation patterns of petroliferous basins between the north and south parts of the West African coast. Oil & Gas Geology (in Chinese), 31(4):410-109. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=syytrqdz201004003

     

    Yang X J, Li J, Yu B S. 2012. Structural feature and exploratory potential of the Lower Congo Basin. Progress in Geophysics (in Chinese), 27(6):2585-2593, doi:10.6038/j.issn.1004-2903.2012.06.036.

     

    Yang Y C, Zhang S L, Sun Y M, et al. 2013. Source rock distribution and petroleum accumulation in Kwanga basin West Africa. Marine Geology Frontiers (in Chinese), 29(3):29-36. http://d.old.wanfangdata.com.cn/Periodical/hydzdt201303005

     

    Zhang P Q, Zhao Q Y. 1996. Methods of the magnetic direction transform of aeromagnetic anomalies with differential inclinations in low magnetic latitudes. Computing Techniques for Geophysical and Geochemical Exploration (in Chinese), 18(3):206-214. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199600551159

     

    胡望水, 李涛, 于水等. 2012.西非被动大陆边缘重力滑脱构造发育演化及成因机制.大地构造与成矿学, 36(2):186-196. doi: 10.3969/j.issn.1001-1552.2012.02.005

     

    纪晓琳, 王万银, 邱之云. 2015.最小曲率位场分离方法研究.地球物理学报, 58(3):1042-1058, doi:10.6038/cjg20150329. http://www.geophy.cn//CN/abstract/abstract11372.shtml

     

    李莉, 吴慕宁, 李大荣. 2005.加蓬含盐盆地及邻区油气勘探现状和前景.中国石油勘探, 10(3):57-63, 68. doi: 10.3969/j.issn.1672-7703.2005.03.012

     

    李涛, 胡望水, 胡芳等. 2012.里奥穆尼盆地重力滑脱构造发育特征及演化规律.石油天然气学报, 34(4):1-6. doi: 10.3969/j.issn.1000-9752.2012.04.001

     

    刘光鼎. 1992.中国海区及邻域地质地球物理特征.北京:科学出版社.

     

    刘光鼎, 郝天珧, 刘伊克. 1996.重磁研究对认识盆地的意义.地球物理学进展, 11(2):1-15. http://www.cnki.com.cn/Article/CJFDTOTAL-DQWJ602.000.htm

     

    刘祚冬, 李江海. 2011.西非被动大陆边缘盆地盐构造对油气的控制作用.石油勘探与开发, 38(2):196-202. http://d.old.wanfangdata.com.cn/Periodical/syktykf201102010

     

    鲁宝亮, 王万银, 杜向东等. 2015.西非陆缘盆地中南段构造与沉积研究.海洋科学进展, 33(3):414-428. doi: 10.3969/j.issn.1671-6647.2015.03.016

     

    饶轶群. 2012.加蓬海岸盆地油气地质特征及勘探前景.内蒙古石油化工, (1):147-149. http://d.old.wanfangdata.com.cn/Periodical/nmgsyhg201201069

     

    王建. 2012.加蓬LT2000区块盐下构造特征与勘探方向分析.石油天然气学报, 34(1):35-40. doi: 10.3969/j.issn.1000-9752.2012.01.008

     

    王万银, 潘作枢. 1993.双界面模型重力场快速正反演问题.石油物探, 32(2):81-123. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK000003044210

     

    王万银, 邱之云, 杨永等. 2010.位场边缘识别方法研究进展.地球物理学进展, 25(1):196-210, doi:10.3969/j.issn.1004-2903.2010.01.027.

     

    熊利平, 刘延莉, 霍红. 2010.西非海岸南、北两段主要含油气盆地油气成藏特征对比.石油与天然气地质, 31(4):410-109. http://d.old.wanfangdata.com.cn/Periodical/syytrqdz201004003

     

    杨晓娟, 李军, 于炳松. 2012.下刚果盆地构造特征及油气勘探潜力.地球物理学进展, 27(6):2585-2593, doi:10.6038/j.issn.1004-2903.2012.06.036.

     

    杨永才, 张树林, 孙玉梅等. 2013.等.西非宽扎盆地烃源岩分布及油气成藏.海洋地质前沿, 29(3):29-36. http://d.old.wanfangdata.com.cn/Periodical/hydzdt201303005

     

    张培琴, 赵群友. 1996.低磁纬度区航磁异常变倾角磁方向转换方法.物探化探计算技术, 18(3):206-214. http://d.old.wanfangdata.com.cn/NSTLQK/10.1071-AH09663/

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出版历程
收稿日期:  2017-09-04
修回日期:  2019-02-02
上线日期:  2019-04-05

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