平庄盆地地质构造及演化特征

Characters of geological structure and structural evolution of Pingzhuang basin

通过野外地质调查及煤田地质、石油地质信息的综合分析,揭示了平庄盆地的地质构造及演化特征.得出如下结论:八里罕拆离断裂是成盆的主控断裂;早期该盆地为地堑式盆地,中晚期演化为半地堑式盆地;挤压构造应力场导致了平庄裂陷盆地消亡;此后该区又经历了北北东向断裂左行走滑(形成了小型拉分盆地,将平庄盆地与相邻的元宝山盆地连通)以及形成北北西向褶皱的构造活动改造.

Through field geological survey and comprehensive analysis of coal and oil geological information,the basin's characters of geological structure and structural evolution were revealed.The conclusions are as follows: the Balihan detachment fault was the main controlling fault;during the earlier period,Pingzhuang basin was a graben basin but in middle and later period,the basin became a semi-graben basin;the extrusing tectonic stress field made Pingzhuang rift basin died out;since then this area underwent str...