A Review of the Geology of the Rio Del Rey Basin, Offshore Cameroon

B. Bate, Maduka Bertram Ozumba, E. A. Ndip, Dorcas S. Eyinla
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引用次数: 2

Abstract

A review of the tectonic evolution, stratigraphic and structural framework, petroleum systems and hydrocarbon potential of the offshore portion of Rio Del Rey (RDR) Basin in Cameroon is presented in this paper. The RDR basin is a passive margin basin present in the Gulf of Guinea and it is located southeast of Niger Delta over an area of about 7,000 km2 offshore. Its stratigraphic components, like those of Niger Delta, comprise of a diachronous succession of prodelta shales (Akata Formation), overlain by delta front sands and shales (Agbada Formation), in turn, overlain by fluvial sands (Benin Formation). The age of this basin ranges from Eocene to Recent and it consists of four structural provinces namely; the growth fault province in the north, the Cretaceous Onshore province in the southeast, the Shale Ridge province in the southwest, and the Delta Toe-thrust in the south-central region. The RDR Basin features three stages of tectonic development: Pre-rift phase (Late Proterozoic to Late Jurassic); Syn-rift phase (Late Jurassic to Early Cretaceous) and Post-rift phase (Late Cretaceous to Holocene). It presently stands out as the major contributor of the petroleum in the country.
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喀麦隆近海Rio Del Rey盆地地质研究进展
本文综述了喀麦隆Rio Del Rey (RDR)盆地近海部分的构造演化、地层构造格架、油气系统和油气潜力。RDR盆地是几内亚湾的被动边缘盆地,位于尼日尔三角洲东南部,面积约7000平方公里。它的地层组成,像尼日尔三角洲的地层组成一样,由前三角洲页岩(Akata组)的历时序列组成,由三角洲前缘砂和页岩(Agbada组)覆盖,依次由河流砂(贝宁组)覆盖。该盆地的年龄为始新世至新近世,由四个构造省组成:北部为生长断裂省,东南部为白垩系陆相省,西南部为页岩岭省,中南部为三角洲脚趾逆冲构造。RDR盆地的构造发育分为三个阶段:裂谷前阶段(晚元古代—晚侏罗世);同裂谷期(晚侏罗世至早白垩世)和后裂谷期(晚白垩世至全新世)。它目前是该国石油的主要贡献者。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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