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yang xin wa xian gou zao yan jiang yan hua yu you qi ju ji
Author(s): 
Pages: 173-179
Year: Issue:  2
Journal: Oil & Gas Geology

Keyword:  阳信洼陷盆地构造第三纪岩浆演化油气聚集;
Abstract: 阳信洼陷在老第三纪存在陡坡带、洼陷带及缓坡带,属左旋张担应力场作用下的箕状断陷;新第三纪转变为右旋压扭应力场作用下的整体拗陷。洼陷经历了幔隆张裂、初始裂谷、裂谷裂陷及坳陷四个发育阶段,发育三期基性超基性岩浆喷发,其演化趋势是从孔店期到馆陶期碱质增加、酸度减少,反映岩石圈不断扩张变薄的过程。注陷最有利于油气生成聚集的构造演化期是裂陷期。
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