天府运动—控制四川盆地二、三叠系气藏的一个地质信息

四川盆地油气勘探实践中,人们发现以通常的“四川运动”解释某些构造圈闭的形成存在若干矛盾,这就启发了作者应用马鞍山组夹大安寨组的沉积变化,恢复古构造特征.通过研究.作者认为在“四川运动”之前存在属于燕山运动的次幕,运动表现形式为小范围的差异升降造成成群的同生褶皱.作者把这个运动命名为“天府运动”,对发现和勘探二、三叠系乃至石炭系的油气藏颇有价值. 

TIANFU MOVEMENT-A SIGNIFICANT FACTOR OF PERMIAN-TRIASSIC GAS POOLS IN THE SICHUAN BASIN

In the practices petroleum exploration in the Sichuan Basin, one would find that the Sichuan Movement can not be properly explained as a controlling factor on the formation of some structural traps. The author ot fhis paper reconstructs the ancient tectonics using the data of the sedimentation of Maanshan and Daanzhai formations. It is proposed that there was a sub-episode of Yanshanian Movement before the Sichuan Movement, and it brought about groups of contemporaneous folds by differential of uplift and subsidence in limited scale. Such a movement is named in the paper as "Tianfu Movement" which would be quite important for the oil/gas explorations in Permian and Triassic systems, even in Carboniferous System of the Sichuan Basin.