穆格莱德盆地构造地质特征与油气富集

doi:10.11743/ogg20070519

Abstract

Abstract:

Muglad Basin is an intracontinental rift basin in Africa,and its tectonic evolution process can be divided into three stages,including initial rifting in early of the Early Cretaceous inherited rifting in late of the Early Cretaceous to the Late Cretaceous,and depression in the Cenozoic.At the end of the Late Cretaceous,the Muglad Basin was strongly modified by the strike-slip movement of the Central African Fault,superimposing strike slipping deformation on the rifting structures of the Tullus Sag and the Bagarra Sag,and also causing an obvious tectonic inversion in south part of the basin.At the initial rifting stage,the basin was filled with semi-deep or deep lacustrine mudstones which were good source rocks;at the inherited rifting stage,the basin developed va-rious types of sandstone as reservoirs and thick mudstone as regional seals.The favorable source-reservoir-cap rocks combination gives the basin large exploration potential.Later modification of the basin has been an important geological issue for evaluation of oil and gas exploration.

Key words: half-graben, half-horst, flower structure, inverted structure, extensional structure, Muglad Basin

CLC Number:

TE111.2

Zhang Yamin, Qi Jiafu. Structural geological characteristics and hydrocarbon enrichment of the Muglad Basin[J]. Oil & Gas Geology, 2007, 28(5): 669-674.

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Structural geological characteristics and hydrocarbon enrichment of the Muglad Basin

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