六盘山盆地与酒西盆地中新生代构造对比

Mesozoic and Cenozoic Structural Comparison in Liupanshan Basin and Jiuxi Basin

六盘山盆地与酒西盆地中新生代构造具有很好的相似性。中生代盆地为走滑拉分盆地 ,发育张扭伸展断层系 (边界走滑断裂 ,盆内伸展正断层 ) ,一级构造单元为断陷、断隆 ;新生代盆地是陆内前陆盆地 ,发育扭压逆冲断裂系 ,盆地一侧发育逆冲推覆体 ,一级构造单元为逆掩冲断褶皱区、坳陷、斜坡。因此 ,可以利用酒西盆地的资料和勘探成果认识六盘山盆地 。

Mesozoic-Cenozoic structures in Liupanshan Basin and Jiuxi Basin have a good compatibility. The Mesozoic basin is a slide and pull apart one, where tenso-shear and extension fault system (its boundary is slide fault, the interior is extension fault ) is developed. Primary structural units are faulted depression and faulted uplift. The Cenozoic basin is an intracontinental foreland basin, where transpressional and thrust fault systems are developed, thrust nappes are developed on one side of the basin, its primary structural units are thrust fold region, depression and slopes. Data from Jiuxi Basin and its exploration result could be used to comprehend Liupanshan Basin and to guide next exploration in the basin with the help of exploration experience in Jiuxi Basin.