Tectonic Evolution of Salt Rock in Kwanza Basin and ItsRelation with Hydrocarbon Accumulation

XUE Bao-shan，ZHANG Shu-lin

doi:10.11764/j.issn.1672-1926.2014.02.221

Natural Gas Geoscience >

2014 , Vol. 25 >Issue 2: 221 - 227

DOI: https://doi.org/10.11764/j.issn.1672-1926.2014.02.221

Tectonic Evolution of Salt Rock in Kwanza Basin and ItsRelation with Hydrocarbon Accumulation

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1.China University of Geoscience,Wuhan 430074,China;2.China National Offshore Oil Corp.,Beijing 100027,China

Received date: 2013-03-01

Revised date: 2013-06-13

Online published: 2014-02-10

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Abstract

Kwanza Basin is a typical salt basin superimposed by rift in the early stage and passive continental margin in the late stage.The formation of the basin underwent three stages of tectonic evolution:rift stage,transition stage and passive continental margin stage.During the transition stage,thick layers of rock salt were deposited.Tectonic evolution after rock salt deposition was mainly controlled by three driving factors (dynamics),and in general the rock salt was thick in the west and thin in the east.To a certain extent,the evolution after rock salt deposition controlled the distribution of upper sedimentary formations,the formation of salt traps and the distribution of salt window.According to the dynamics of rock salt evolution and current rock salt characteristics,Kwanza Basin is divided into salt extension region and salt compression region.The two regions are of different migration and accumulation conditions,and thus are of different exploration potentials and directions.

Key words： Rock salt; Tectonic evolution; Hydrocarbon accumulation; Kwanza Basin

Cite this article

XUE Bao-shan，ZHANG Shu-lin . Tectonic Evolution of Salt Rock in Kwanza Basin and ItsRelation with Hydrocarbon Accumulation[J]. Natural Gas Geoscience, 2014 , 25(2) : 221 -227 . DOI: 10.11764/j.issn.1672-1926.2014.02.221

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