中—新生代东昆仑造山带构造事件及柴西南盆地原型研究  

Study on the Tectonic Events of East-Kunlun Orogenic Belt and Prototype about West-South Qadam Basin during Mesozoic and Cenozoic

作　　者：倪金龙[1] 汪劲草[2] 周莉 赵小花 刘东 宋召军[1] 

机构地区：[1]山东科技大学地球信息科学与工程学院,山东青岛266510 [2]桂林工学院资源与环境工程系,广西桂林541004 [3]中国石油青海油田分公司,甘肃敦煌736202

出　　处：《现代地质》2007年第3期505-510,517,共7页Geoscience

基　　金：中国石油青海油田分公司科技项目(970208-03)

摘　　要：柴西南盆地原型的研究由于其复杂的地质背景存在众多争论。根据盆山耦合理论,从东昆仑造山带与柴西南盆地受制于共同应力场的角度,结合二者资料及野外考察,对东昆仑山中、新生代以来的构造事件进行了厘定。以此为基础,对柴西南盆地原型的形成与改造进行了探讨。认为:中、新生代以来,东昆仑造山带与柴西南盆地一起共同经历了多期挤压与伸展事件。其中,早、中侏罗世东昆仑山可能经历了造山后伸展事件,这一事件可能是中生代柴西南原型盆地的直接成因;新生代早、中期的伸展环境及昆北断裂、阿尔金断裂的右行走滑可能是新生代柴西南原型盆地形成的主要机制。中、新生代以来的多期挤压事件对前期原型盆地有着重要的改造作用。There was much contention about the prototype of west-south Qadam basin because of its complex geology background. Based on the basin-range coupling theory, the tectonic geology events during Mesozoic and Cenozoic were determined from the point that East Kunlun orogenic belt and west-south Qadam basin were in a common stress field, combining with versatile data and filed geology review. On the base of above named studies, the formation and reconstruction about the prototype of west-south Qadam were discussed. The conclusions are as follows： Firstly, East Kunlun orogenic belt and west-south Qadam basin had suffered many periods of press and stretch events. Among them, East Kunlun orogenic belt underwent perhaps postorogenic stretch during Lower and Middle Jurassic that might be the direct cause of the prototype of west-south Qadam basin during Mesozoic. Secondly, the pull-part geology background and the right-slip of Kunbei and Ahun faults might be the main mechanism of prototype of Qadam basin during Cenozoic. Finally, the prototype basin was reconstructed by multi-episode press events during Mesozoic and Cenozoic.

关 键 词：柴西南盆地 东昆仑造山带 中 新生代 盆地原型 盆山耦合 

分 类 号：TE121[石油与天然气工程—油气勘探]