松辽盆地中生代沉积基准面变化研究  

THE STUDY OF BASE LEVEL CHANGES OF THE SONGLIAO BASIN IN MESOZOIC

作　　者：张世奇[1] 任延广[2] 

机构地区：[1]石油大学地球资源与信息学院,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：《长安大学学报（地球科学版）》2003年第2期1-5,共5页

基　　金：国家重点基础研究发展规划项目(1999043304);CNPC九五科技攻关项目(970201-02-07)

摘　　要：　利用地质资料研究来恢复沉积基准面变化。首先根据沉积物的分布规律、沉积构造、古生物组合及古生态、自生矿物和波基面等特征来获得古水深,然后利用对地层做脱水压实校正获得沉积物原始厚度。对湖盆地区古水深和沉积物原始厚度累加起来就可得到沉积基准面变化曲线。沉积基准面变化曲线为在松辽盆地中进行地层对比提供了依据。The base level changes can be determined in two methods: one is based on geologic data from drilling holes and the other on seismic sections. In the article we restored base level changes using geologic data, and the method was divided into two steps. The first is to obtain ancient water depth by the distribution characters of sediments, sedimentary structures, palaeontological sets and ecology, authigenic minerals and wave base surface. The second step is to obtain original thickness of sediments by using stratigraphic decompaction adjustment. Thus,the curve of base level changes can be obtained by adding up the ancient water depth and the original thickness. The curve of base level changes provided the base of stragraphic correlation in Songliao basin.

关 键 词：松辽盆地 中生代 沉积基准面 古水深 沉积物原始厚度 层序地层学 油气预测 

分 类 号：P618.130.2[天文地球—矿床学] P534.5[天文地球—地质学]