摘要
黄骅拗陷是勃中三叉裂谷系中的一支裂谷，具有地幔隆起，高热流和火山活动频繁等特征．拗陷中发育着四套构造地层组合，对应着三个构造层次。裂谷盆地的演化经历了三个阶段不同方向的构造运动程式：（１）前裂谷阶段经受印支运动近南北向的挤压作用、燕山早期运动北西—南东向的挤压作用及燕山晚期运动北西西—南东东向的挤压作用等；（２）裂谷阶段经受两期裂陷作用，为北西—南东向和近南北向的引张作用；（３）压裂谷阶段裂谷萎缩引起的垂向下陷运动。
Huanghua Depression is a rift of Bozhong Triple Rifts that have the features of mantle uplift, high-heat flow and strong volcanic activity. Four tectono-stratigraphic units in this depression exist in each of the three tectonic levels. The evolution of the rift basin underwent three periods of tectonic movement patterns with different orientations: ① During the prerift period, the compressive oriontations with S-N direction. NW-SE direction and NWW-SEE direction were produced by the Indo-China Movement, the Early Yanshan Movement and the Late Yansban Movement respectively; ② During the rift period, two phases of rifting with the extensions of NW-SE and S-N direstio, were produced in the depresaion; ③ During the post-rift period, the tectonic movement changed from horizontal movement to vertical subsidence because of the shrinkage of the rift.
出处
《西南石油学院学报》
CSCD
1995年第2期8-14,共7页
Journal of Southwest Petroleum Institute
关键词
裂谷带
拗陷
构造运动
圈闭
Rift zone
Depression
Uplift
Tectonic system
