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ta li mu pen di zhen dan xi lie gu fa yu te zheng ji qi dui you qi kan tan de zhi dao yi yi
Author(s): 
Pages: 5-10
Year: Issue:  2
Journal: Petroleum Geology and Engineering

Keyword:  沉积体系裂谷震旦纪油气勘探塔里木盆地;
Abstract: 在前人对塔里木盆地深部地层研究的基础之上,利用钻井、新地震资料首次精细刻画了震旦系裂谷发育特征,认为塔里木盆地震旦系受天山洋和昆仑洋裂谷作用控制,发育麦盖提、满加尔、阿瓦提三大坳拉槽和塔北、巴楚-塔中、和田三大古陆,震旦系沉积分为裂陷期和坳陷期两期沉积;分析了震旦系裂谷对油气勘探的指导意义:其一是震旦系裂谷及其继承性沉降作用直接控制了震旦系自身及下寒武统玉尔吐斯烃源岩的分布,其二是震旦系继承性裂谷沉降边缘控制了下寒武统台地边缘相带的分布、继承性古陆控制了下寒武统台地的分布,其三是震旦纪古陆及继承性裂谷边缘发育的寒武系中下统台缘相带共同控制了中寒武统的膏盐岩的分布,其四是塔中寒武系盐下大构造继承发育是有利勘探区带,巴楚和玛东是寒武系盐下勘探的最有利区.
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