气候变化领域集成服务门户(CCPortal): Tectono-stratigraphic evolution and architecture of the Miocene Rio del Rey basin (Cameroon margin; Gulf of Guinea)

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DOI	10.1007/s00531-020-01917-6
	Tectono-stratigraphic evolution and architecture of the Miocene Rio del Rey basin (Cameroon margin; Gulf of Guinea)
	Owono F.M.; Atangana J.N.; Owona S.; Dauteuil O.; Nsangou Ngapna M.; Guillocheau F.; Koum S.; Boum R.B.E.; Ntamak-Nida M.J.
发表日期	2020
ISSN	14373254
起始页码	2557
结束页码	2581
卷号	109 期号:7
英文摘要	The Rio Del Rey basin located in the Gulf of Guinea is one of the two basins lining the Cameroonian coast. It evolved since the Cenozoic in a tectono-magmatic and seismic complex setting. During the Miocene, this evolution was controlled by tectonics, relative sea level changes, basin filling and mantle dynamics. Two deposit megasequences of second order, MS1 and MS2, were pointed out. MS1 (lower Miocene), aggradational and corresponding to the Isongo turbidites deposited during a period of relative sea level drop registered two sequences of third order differentiated by the degree of channel incision: S1a (Aquitanian–Burdigalian), hardly incised and S1b (Serravallian), moderately incised. A double extension along N–S (Burdigalian) and NE–SW (Serravallian) directions responsible for a set of horsts and grabens, high subsidence and depocentres trending NW–SE affected these sequences. MS2 (middle to upper Miocene), progradational and corresponding to deltaic alternations deposited during a period of creation of available space were controlled by the tilting, wrenching, a second stretching phase and low sedimentary filling. MS2 recorded three cycles of 3rd order: S2a (lower Tortonian), S2b (upper Tortonian) and S2c (Messinian) differentiated by their morphology in ramp for S2a and S2b and slope for S2c. The formation of grabens and horsts and the tilting of the margin coincide with the high activity of the Cameroon volcanic line interpreted as a result of deep mantle dynamics affecting the inner Congo craton lithosphere. This architecture, which differs from those of the other basins of the Gulf of Guinea, partly explains the low oil production of this basin. © 2020, Geologische Vereinigung e.V. (GV).
英文关键词	Architecture; Cameroon margin; Cameroon volcanic line; Isongo formation; Miocene; Rio del Rey
语种	英语
scopus关键词	basin evolution; basin fill; mantle structure; Miocene; progradation; sea level change; sequence stratigraphy; tectonostratigraphy; turbidite; Atlantic Ocean; Cameroon; Gulf of Guinea; Rio del Rey Basin; South West Region
来源期刊	International Journal of Earth Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147614
作者单位	Department of Earth Sciences, University of Douala, B.P. 24157, Douala, Cameroon; Department of Earth Sciences, University of Yaoundé, B.P. 812, Yaoundé, Cameroon; UMR-CNRS 6118 Géosciences Rennes, Université de Rennes1, Rennes cedex, 35042, France
推荐引用方式 GB/T 7714	Owono F.M.,Atangana J.N.,Owona S.,et al. Tectono-stratigraphic evolution and architecture of the Miocene Rio del Rey basin (Cameroon margin; Gulf of Guinea)[J],2020,109(7).
APA	Owono F.M..,Atangana J.N..,Owona S..,Dauteuil O..,Nsangou Ngapna M..,...&Ntamak-Nida M.J..(2020).Tectono-stratigraphic evolution and architecture of the Miocene Rio del Rey basin (Cameroon margin; Gulf of Guinea).International Journal of Earth Sciences,109(7).
MLA	Owono F.M.,et al."Tectono-stratigraphic evolution and architecture of the Miocene Rio del Rey basin (Cameroon margin; Gulf of Guinea)".International Journal of Earth Sciences 109.7(2020).