珠江口盆地西江主洼主干断层活动强度及构造演化特征分析
发布时间：2019-05-19 14:36
【摘要】：在文昌组和恩平组层序细分的基础上,对西江主洼主干断层的古近纪活动强度进行了分析;并且在此基础上利用平衡剖面技术对洼陷的主干剖面进行了构造演化恢复。认为:1 NE向的F1号断层是区域性的控洼断层,对沉积充填及构造演化有重要作用;2多数主干断层在文昌期活动性较强,在恩平期活动较弱;3西江主洼构造演化阶段可分为初始断陷期、强烈断陷期、断拗过渡期和热沉降期,其中初始断陷期和强烈断陷期对于洼陷的形成、扩张以及沉积充填有十分重要的意义。
[Abstract]:On the basis of sequence subdivision of Wenchang formation and Enping formation, the Paleogene activity intensity of the main faults in Xijiang main depression is analyzed, and the tectonic evolution of the main section of Xijiang main depression is restored by using equilibrium profile technique. It is considered that: (1) the F1 fault in the direction of NE is a regional controlled depression fault, which plays an important role in sedimentary filling and structural evolution, (2) most of the main faults have strong activity in Wenchang period and weak activity in Enping period, and (2) most of the main faults have strong activity in Wenchang period and weak activity in Enping period. (3) the tectonic evolution stage of Xijiang main depression can be divided into initial fault depression stage, strong fault depression period, fault depression transition period and heat sink period, in which the initial fault depression period and strong fault depression period are of great significance to the formation, expansion and sedimentary filling of the depression.
【作者单位】： 中海石油(中国)有限公司深圳分公司;
【分类号】：P618.13;P542
[Abstract]:On the basis of sequence subdivision of Wenchang formation and Enping formation, the Paleogene activity intensity of the main faults in Xijiang main depression is analyzed, and the tectonic evolution of the main section of Xijiang main depression is restored by using equilibrium profile technique. It is considered that: (1) the F1 fault in the direction of NE is a regional controlled depression fault, which plays an important role in sedimentary filling and structural evolution, (2) most of the main faults have strong activity in Wenchang period and weak activity in Enping period, and (2) most of the main faults have strong activity in Wenchang period and weak activity in Enping period. (3) the tectonic evolution stage of Xijiang main depression can be divided into initial fault depression stage, strong fault depression period, fault depression transition period and heat sink period, in which the initial fault depression period and strong fault depression period are of great significance to the formation, expansion and sedimentary filling of the depression.
【作者单位】： 中海石油(中国)有限公司深圳分公司;
【分类号】：P618.13;P542
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