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《Journal of Stratigraphy》 2016-01
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SPATIAL-TEMPORAL EVOLUTION OF THE CRETACEOUS SEDIMENTARY SEQUENCES AND BASIN FILLING PATTERNS IN THE TERMIT BASIN OF WEST AFRICA

WANG Zhen-sheng;TANG Ge;SU Jun-qing;ZHOU Shu-hui;LIU Ai-ping;WANG Zhi-yao;YANG Bing;Research Institute of Exploration and Development,Dagang Oilfield Company,CNPC;  
The Termit Basin is a Meso-Cenozoic rift basin located in eastern Niger.It is an important sedimentary basin with abundant petroleum resources.The sedimentary sequences and basin filling history of the Termit Basin are complex because of the multi-phase tectonic control,various tectonic styles and multiple sedimentary processes.With the application of sequence stratigraphy,the Cretaceous sedimentary history and basin filling patterns of the Termit Basin were analyzed.The results show that there are three major tectonic evolution phases,various geomorphological backgrounds in basin edge,and five basin filling patterns.The development of the Early Cretaceous sequence TS1 was controlled by fault activities,with two basin filling patterns in fault-controlled steep slopes and multilevel fault terrace zones.On the other hand,the development of the Late Cretaceous sequence TS2 was influenced by the transgression in the Tethys and southern Atlantic oceans,with three basin filling patterns in flexure slope-breaks,sedimentary slope-breaks,and simple slopes.These features of sedimentary systems and the spatial and temporal distribution of sand bodies were controlled by the diversity of basin filling mechanisms.This research has implications for the petroleum exploration in the Termit Basin.
【Fund】: 中石油“Agadem区块白垩系成藏规律研究及勘探目标优选”(No.CNPCNP/01/2014-0700)项目资助
【CateGory Index】: P534.53;P618.13
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