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chu lun zhong guo dong bu han you qi pen di de di bi gou zao
Pages: 113-123+200
Year: Issue:  2
Journal: Oil & Gas Geology

Keyword:  底辟构造中国东部新生代含油气盆地构造圈闭东营凹陷我国东部形成机制异常流体压力塑性层盐丘构造;
Abstract: In the tectonic evolution of Meso-Cenozoic oil and gas-bearing basinsin Eastern China,the diapirism,by which oil and gas structural traps areformed,are quite obvious.This paper will focus on the mechanism of salt and mud diapiric struc-tural traps intruded at low temperature.In the meantime we will prelimina-rily probe the possibility of the existence of magmatic diapiric structureswhich are intruded at high temperature.It is emphasized that the distribu-tion of soft mudstone are obviously much wider than that of salt and gyp-sum in the eastern basins of China,therefore,the diapirism of mudstoneshould be paid more attention to.Four problems are discussed in this paper:1.The characteristics and classification of diapiric structures.2.The formation mechanism of diapiric structures.3.A preliminary understanding of the structural traps of magmatic dia-pit in Northern Jiangsu basin.4.The characteristics of oil and gas accumulation of diapiric structuraltraps.
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