陆相断陷湖盆中可容空间变化特征探讨  

AN APPROACH TO THE ACCOMMODATION SPACE CHANGES OF THE FAULT DEPRESSION LAKE BASIN

作　　者：张世奇[1] 纪友亮[1] 王金友[1] 任延广[2] 

机构地区：[1]石油大学资源科学系,山东东营257061 [2]大庆石油管理局地质研究院,黑龙江大庆163001

出　　处：《矿物岩石》2001年第2期34-37,共4页Mineralogy and Petrology

基　　金：国家重点基础研究发展规划项目 (19990 43 3 0 4);中国石油天然气集团公司九五科技攻关项目 (970 2 0 1-0 2 -0 7)

摘　　要：本文以松辽盆地晚侏罗—早白垩统地层为例 ,综合利用地震、钻井和岩心资料对陆相断陷湖盆的可容空间变化特征进行了研究。可容空间的产生方式主要取决于断陷盆地中边界断层的活动方式 :原地式断陷主要从垂向上来扩大盆地的可容空间 ,而后退式断陷主要从横向上来扩大盆地的可容空间。水下可容空间增量与同期供给的沉积物体积之间的对比关系控制层序的演化和体系域的形成。Using upper Jurassic—lower Cretaceous of Songliao basin as research target, the characteristics of the accommodation space changes of the fault depression lake basin were studied by means of comprehensive explanation of seismic sections, drilling and core data. The formation styles of accommodation space were mainly controlled by the tectonic movement styles of boundary faults in the fault depression lake basin. In the fault depression in situ accommodation space was increased mainly in vertical direction, and in the receding fault depression it was produced mainly in lateral direction. The correlative relationship between increment of subaquatic accommodation space and synchronous sedimentary volume controlled the evolution of sequence and the formation of system tracts.

关 键 词：湖相盆地 断陷盆地 层序地层学 可容空间 体系域 边界断层 活动方式 

分 类 号：P544.4[天文地球—构造地质学]