收稿：2020-05-06，
纸质出版：2020-12-28
移动端阅览
塞纳加尔盆地深水区白垩系广泛发育陆架三角洲及斜坡扇体系，是近期全球油气勘探发现最活跃的地区之一。通过地震相和井资料分析，对塞内加尔盆地陆架边缘斜坡带的层序格架、沉积-地貌演化，及其对构造、海平面和沉积物供应变化的响应关系开展了系统性的研究。研究表明盆地的白垩纪沉积充填可划分出以阿普特末期和塞诺曼末期区域性不整合面为界的2个复合层序CS1和CS2，进而划分出8个三级层序；识别出具有“源-汇”关系的陆架边缘三角洲和斜坡扇体系，并根据地震相划分出3种沉积亚相：三角洲平原，三角洲前缘和前三角洲，以及4种斜坡扇沉积单元：滑塌泥石流朵体、侵蚀-充填水道、前缘扇朵体和远端扇朵体；依据不同时期斜坡扇的演化特点（坡脚型—侵蚀型—宽缓型），划分出3个演化阶段。塞内加尔盆地白垩纪的沉积格局与物源供给、古地貌和海平面变化密切相关。斜坡扇的发育位置及三角洲的后期充填受古地貌的影响。海平面变化和沉积物供给控制着陆架三角洲和斜坡扇的推进和发育形态。西非毛里塔尼德的持续性构造隆升，中大西洋海底扩张增速，及早白垩陆缘翘倾等区域性构造事件，使塞内加尔盆地物源供给和古地貌发生变化。发育于陆架边缘的白垩纪三角洲-斜坡扇碎屑沉积体系构成了塞内加尔盆地最重要的油气勘探对象。
The Cretaceous system with its extensive shelf-edge deltas and slope fans in the Senegal Basin is one of the most active oil and gas exploration areas in the world.This study systematically explores the sequence framework and sedimentary-geomorphic evolution of the shelf-edge slope zone in the basin
and their responses to the tectonic
sea level and sedimentary supply variations based on the analysis of seismic facies and well data.The results show that the Cretaceous sedimentary system could be divided into two composite sequences (CS1 and CS2) separated by the regional unconformities of the Late Aptian and Late Cenomanian.The two sequences are subdivided into eight third-order sequences.The shelf-edge delta and slope fan facies with a source-to-sink relationship are identified.Three sedimentary subfacies are recognized in the deltas according to seismic facies
namely the delta plain
delta front and pro-delta; and four sedimentary units are identified in the slope fans
namely the landslide debris flow lobe
erosion-filling channel
delta-front fan lobe
and distal fan lobe.Three evolutionary stages are determined according to the evolutionary traits of the slope fan (from slope toe stage to erosional and wide and gentle stages).The deposition distribution of the Cretaceous is closely related to provenance supply
paleogeomorphology and eustatic fluctuation at different periods.The locations of the slope fans and the later filling in the deltas were once conditioned by paleogeomorphology.Sea level changes and provenance supply are the major factors controlling the shape and advancement of the deltas and slope fans.Regional tectonic events including the continuous uplift of the Mauritanides in West Africa
the expansion of mid-Atlantic seafloor
and the tilting of continental margin in the Early Cretaceous have changed the provenance supply and paleomorphology of the basin.The Cretaceous clastic sedimentary system with delta-slope fan facies developed on the shelf edge in the Senegal Basin is thus considered the most important target for oil and gas exploration in the study area.
熊利平 , 王骏 , 殷进垠 , 等 . 西非构造演化及其对油气成藏的控制作用 [J ] . 石油与天然气地质 , 2005 , 26 ( 5 ): 641 - 643 . http://ogg.pepris.com/CN/10.11743/ogg20050514 http://ogg.pepris.com/CN/10.11743/ogg20050514
Xiong Liping , Wang Jun , Yin jinyin , et al . Tectonic evolution and its control on hydrocarbon accumulation in West Africa [J ] . Oil & Gas Geology , 2005 , 26 ( 5 ): 641 - 643 . http://ogg.pepris.com/CN/10.11743/ogg20050514 http://ogg.pepris.com/CN/10.11743/ogg20050514
林畅松 . 盆地沉积动力学:研究现状与未来发展趋势 [J ] . 石油与天然气地质 , 2019 , 40 ( 4 ): 685 - 700 . http://ogg.pepris.com/CN/10.11743/ogg20190401 http://ogg.pepris.com/CN/10.11743/ogg20190401
Lin Changsong . Sedimentary dynamics of basin:Status and trend [J ] . Oil & Gas Geology , 2019 , 40 ( 4 ): 685 - 700 . http://ogg.pepris.com/CN/10.11743/ogg20190401 http://ogg.pepris.com/CN/10.11743/ogg20190401
宫越 , 林畅松 , 何敏 , 等 . 中国南海北部珠江口盆地早渐新世末破裂不整合特征及其地质意义 [J ] . 石油与天然气地质 , 2019 , 40 ( 4 ): 851 - 863 . http://ogg.pepris.com/CN/10.11743/ogg20190414 http://ogg.pepris.com/CN/10.11743/ogg20190414
Gong Yue , Lin Changsong , He Min , et al . Characteristics and geologi-cal significance of unconformities at the late Early Oligocene in the Pearl River Mouth Basin, northern South China Sea [J ] . Oil & Gas Geology , 2019 , 40 ( 4 ): 851 - 863 . http://ogg.pepris.com/CN/10.11743/ogg20190414 http://ogg.pepris.com/CN/10.11743/ogg20190414
李全 , 吴伟 , 康洪全 , 等 . 西非下刚果盆地深水水道沉积特征及控制因素 [J ] . 石油与天然气地质 , 2019 , 40 ( 4 ): 917 - 929 . http://ogg.pepris.com/CN/10.11743/ogg20190419 http://ogg.pepris.com/CN/10.11743/ogg20190419
Li Quan , Wu Wei , Kang Hongquan , et al . Characteristics and controlling factors of deep water channel sedimentation in Lower Congo Basin, West Africa [J ] . Oil & Gas Geology , 2019 , 40 ( 4 ): 917 - 929 . http://ogg.pepris.com/CN/10.11743/ogg20190419 http://ogg.pepris.com/CN/10.11743/ogg20190419
Davison I . Central Atlantic margin basins of North West Africa:Geology and hydrocarbon potential (Morocco to Guinea) [J ] . Journal of African Earth Sciences , 2005 , 43 ( 1-3 ): 254 - 274 . DOI: 10.1016/j.jafrearsci.2005.07.018 http://doi.org/10.1016/j.jafrearsci.2005.07.018
Ye J , Chardon D , Rouby D , et al . Paleogeographic and structural evolution of northwestern Africa and its Atlantic margins since the early Mesozoic [J ] . Geosphere , 2017 , 13 ( 4 ): 1254 - 1284 . http://www.researchgate.net/publication/317199404_Paleogeographic_and_structural_evolution_of_northwestern_Africa_and_its_Atlantic_margins_since_the_early_Mesozoic http://www.researchgate.net/publication/317199404_Paleogeographic_and_structural_evolution_of_northwestern_Africa_and_its_Atlantic_margins_since_the_early_Mesozoic
Casson M , Calvès G , Huuse M , et al . Cretaceous continental margin evolution revealed using quantitative seismic geomorphology, offshore northwest Africa [J ] . Basin Research , 2020 , 4 , 1 - 25 . http://onlinelibrary.wiley.com/doi/10.1111/bre.12455 http://onlinelibrary.wiley.com/doi/10.1111/bre.12455
刘延莉 . 塞内加尔盆地油气地质特征及勘探潜力 [J ] . 地质与资源 , 2014 , 23 ( 2 ): 197 - 201 . http://d.wanfangdata.com.cn/Periodical/gjsdz201402021 http://d.wanfangdata.com.cn/Periodical/gjsdz201402021
Liu Yanli . The petroleum geology and prospective analysis of the Senegal Basin [J ] . Geology and Resources , 2014 , 23 ( 2 ): 197 - 201 . http://d.wanfangdata.com.cn/Periodical/gjsdz201402021 http://d.wanfangdata.com.cn/Periodical/gjsdz201402021
林卫东 , 陈文学 , 熊利平 , 等 . 西非海岸盆地油气成藏主控因素及勘探潜力 [J ] . 石油实验地质 , 2008 , 30 ( 5 ): 450 - 455 . http://www.cqvip.com/Main/Detail.aspx?id=28315726 http://www.cqvip.com/Main/Detail.aspx?id=28315726
Lin Weidong , Chen Wenxue , Xiong Liping , et al . Pool forming constrains and the hydrocarbon exploration potential of the west Africa coast basins [J ] . Petroleum Geology & experiment , 2008 , 30 ( 5 ): 450 - 455 . http://www.cqvip.com/Main/Detail.aspx?id=28315726 http://www.cqvip.com/Main/Detail.aspx?id=28315726
徐志诚 , 吕福亮 , 范国章 , 等 . 西非海岸盆地深水区油气地质特征和勘探前景 [J ] . 油气地质与采收率 , 2012 , 19 ( 5 ): 1 - 5 . http://d.wanfangdata.com.cn/Periodical/yqdzycsl201205001 http://d.wanfangdata.com.cn/Periodical/yqdzycsl201205001
Xu Zhicheng , Lv Fuliang , Fan Guozhang , et al . Petroleum geological characteristics and exploration prospects in deep water area of the West African coastal basins [J ] . Petroleum Geology and Recovery Efficiency , 2012 , 19 ( 5 ): 1 - 5 . http://d.wanfangdata.com.cn/Periodical/yqdzycsl201205001 http://d.wanfangdata.com.cn/Periodical/yqdzycsl201205001
徐汉梁 , 单玄龙 , 高璇 , 等 . 西非塞内加尔盆地重油成藏条件及富集规律 [J ] . 科学技术与工程 , 2014 , 14 ( 16 ): 211 - 215 . http://www.cqvip.com/QK/84018X/201416/49924806.html http://www.cqvip.com/QK/84018X/201416/49924806.html
Xu Hanliang , Shan Xuanlong , Gao Xuan , et al . Accumulation conditions and enrichment law of heavy oil in Senegal Basin, West Africa [J ] . Science Technology and Engineering , 2014 , 14 ( 16 ): 211 - 215 . http://www.cqvip.com/QK/84018X/201416/49924806.html http://www.cqvip.com/QK/84018X/201416/49924806.html
孙涛 , 王建新 , 孙玉梅 . 西非塞内加尔盆地深水区油气地球化学特征与油气成藏 [J ] . 沉积学报 , 2017 , 35 ( 6 ): 1284 - 1292 . http://d.g.wanfangdata.com.cn/Periodical_cjxb201706019.aspx http://d.g.wanfangdata.com.cn/Periodical_cjxb201706019.aspx
Sun Tao , Wang Jianxin , Sun Yumei . Hydrocarbon geochemistry and hydrocarbon accumulation in the deep water of Senegal Basin in West Africa [J ] . Acta Sedimentologica Sinica , 2017 , 35 ( 6 ): 1284 - 1292 . http://d.g.wanfangdata.com.cn/Periodical_cjxb201706019.aspx http://d.g.wanfangdata.com.cn/Periodical_cjxb201706019.aspx
王大鹏 , 殷进垠 , 田纳新 , 等 . 塞内加尔盆地成藏组合划分与资源潜力评价 [J ] . 现代地质 , 2017 , 31 ( 6 ): 1201 - 1213 . http://www.cqvip.com/QK/96868X/201706/674026350.html http://www.cqvip.com/QK/96868X/201706/674026350.html
Wang Dapeng , Yin Jinyin , Tian Naxin , et al . Division and resource evaluation of hydrocarbon plays in the Segenal Basin, West Africa [J ] . Geoscience , 2017 , 31 ( 6 ): 1201 - 1213 . http://www.cqvip.com/QK/96868X/201706/674026350.html http://www.cqvip.com/QK/96868X/201706/674026350.html
Ndiaye M , Ngom P M , Gorin G , et al . A new interpretation of the deep-part of Senegal-Mauritanian Basin in the Diourbel-Thies area by integrating seismic, magnetic, gravimetric and borehole data:Implication for petroleum exploration [J ] . Journal of African Earth Sciences , 2016 , 121 , 330 - 341 . DOI: 10.1016/j.jafrearsci.2016.06.002 http://doi.org/10.1016/j.jafrearsci.2016.06.002
刘祚冬 , 李江海 . 西非被动大陆边缘含油气盐盆地构造背景及油气地质特征分析 [J ] . 海相油气地质 , 2009 , 14 ( 3 ): 46 - 52 . http://d.wanfangdata.com.cn/Periodical/hxyqdz200903006 http://d.wanfangdata.com.cn/Periodical/hxyqdz200903006
Liu Zuodong , Li Jianghai . Tectonic evolution and petroleum geology characteristics of petroliferous salt basins area along passive continental margin, West Africa [J ] . Marine Origin Petroleum Geology , 2009 , 14 ( 3 ): 46 - 52 . http://d.wanfangdata.com.cn/Periodical/hxyqdz200903006 http://d.wanfangdata.com.cn/Periodical/hxyqdz200903006
Gouiza M , Bertotti G , Hafid M , et al . Kinematic and thermal evolution of the Moroccan rifted continental margin:Doukkala-High Atlas transect [J ] . Tectonics , 2010 , 29 ( 5 ): TC5008 . http://onlinelibrary.wiley.com/doi/10.1029/2009TC002464/full http://onlinelibrary.wiley.com/doi/10.1029/2009TC002464/full
Coterill K , Tari G C , Molnar J , et al . Comparison of depositional sequences and tectonic styles among the West African deepwater frontiers of western Ivory Coast, southern Equatorial Guinea, and northern Namibia [J ] . The Leading Edge , 2002 , 21 ( 11 ): 1103 - 1111 . DOI: 10.1190/1.1523747 http://doi.org/10.1190/1.1523747
Lin C S , Yang H J , Liu J Y , et al . Distribution and erosion of the Paleozoic tectonic unconformities in the Tarim Basin, Northwest China:Significance for the evolution of paleo-uplifts and tectonic geography during deformation [J ] . Journal of Asian Earth Sciences , 2012 , 46 , 1 - 19 . DOI: 10.1016/j.jseaes.2011.10.004 http://doi.org/10.1016/j.jseaes.2011.10.004
李浩 , 王骏 , 殷进垠 . 测井资料识别不整合面的方法 [J ] . 石油物探 , 2007 , 46 ( 4 ): 421 - 424 . http://www.cnki.com.cn/Article/CJFDTotal-SYWT200704021.htm http://www.cnki.com.cn/Article/CJFDTotal-SYWT200704021.htm
Li Hao , Wang Jun , Yin Jinyin . A method for identifying unconformity of logging data [J ] . Geophysical Prospecting for Petroleum , 2007 , 46 ( 4 ): 421 - 424 . http://www.cnki.com.cn/Article/CJFDTotal-SYWT200704021.htm http://www.cnki.com.cn/Article/CJFDTotal-SYWT200704021.htm
Mutti E , Ricci L F . Turbidites of the northern Apennines:Introduction to facies analysis [J ] . International Geology Review , 1978 , 20 ( 2 ): 125 - 166 . DOI: 10.1080/00206817809471524 http://doi.org/10.1080/00206817809471524
Shanmugam G , Moiola R J . Submarine fans:Characteristics, models, classification, and reservoir potential [J ] . Earth-Science Reviews , 1988 , 24 ( 6 ): 383 - 428 . DOI: 10.1016/0012-8252(88)90064-5 http://doi.org/10.1016/0012-8252(88)90064-5
Shanmugam G , Lehtonen L R , Straume T , et al . Slump and debris-flow dominated upper slope facies in the Cretaceous of the Norwegian and northern North seas (61-67 degrees N); implications for sand distribution [J ] . AAPG Bulletin , 1994 , 78 ( 6 ): 910 - 937 . http://www.researchgate.net/publication/241915929_Slump_and_debris-flow_dominated_upper_slope_facies_in_the_Cretaceous_of_the_Norwegian_and_northern_North_Seas_(61-67N)_Implications_for_sand_distribution http://www.researchgate.net/publication/241915929_Slump_and_debris-flow_dominated_upper_slope_facies_in_the_Cretaceous_of_the_Norwegian_and_northern_North_Seas_(61-67N)_Implications_for_sand_distribution
Lin C S , Jiang J , Shi H S , et al . Sequence architecture and depositional evolution of the northern continental slope of the South China Sea:Responses to tectonic processes and changes in sea level [J ] . Basin Research , 2017 , 30 , 568 - 595 .
Lin C S , He M , Steel R J , et al . Changes in inner-to outer-shelf delta architecture, Oligocene to Quaternary Pearl River shelf-margin prism, northern South China Sea [J ] . Marine Geology , 2018 , 404 , 187 - 204 . DOI: 10.1016/j.margeo.2018.07.009 http://doi.org/10.1016/j.margeo.2018.07.009
Bird D E , Hall S A , Burke K , et al . Early Central Atlantic Ocean seafloor spreading history [J ] . Geosphere , 2007 , 3 ( 5 ): 282 - 298 . DOI: 10.1130/GES00047.1 http://doi.org/10.1130/GES00047.1
Gouiza M , Bertotti G , Charton R , et al . New evidence of 'anomalous' vertical movements along theHinterland of the Atlantic NW African Margin [J ] . JGR Solid Earth , 2019 , 124 , 13333 - 13353 . http://agupubs.onlinelibrary.wiley.com/doi/10.1029/2019JB017914 http://agupubs.onlinelibrary.wiley.com/doi/10.1029/2019JB017914
Rouby D , Braun J , Robin C , et al . Long-term stratigraphic evolution of Atlantic-type passive margins:A numerical approach of interactions between surface processes, flexural isostasy and 3D thermal subside-nce [J ] . Tectonophysics , 2013 , 604 , 83 - 103 . DOI: 10.1016/j.tecto.2013.02.003 http://doi.org/10.1016/j.tecto.2013.02.003
Mourlot Y , Roddaz M , Dera G , et al . Geochemical evidence for large-scale drainage reorganization in Northwest Africa during the Cretaceous [J ] . Geochemistry, Geophysics, Geosystems , 2018 , 19 , 1690 - 1712 . DOI: 10.1029/2018GC007448 http://doi.org/10.1029/2018GC007448
Labails C , Olivet J L , Aslanian D , et al . An alternative early opening scenario for the Central Atlantic Ocean [J ] . Earth and Planetary Scie-nce Letters , 2010 , 297 ( 3-4 ): 355 - 368 . DOI: 10.1016/j.epsl.2010.06.024 http://doi.org/10.1016/j.epsl.2010.06.024
相关作者
相关机构
京公网安备11010802024621
