摘要
根据地震、钻井、测井、分析化验等资料，研究了东营凹陷下第三系层序地层结构，归纳出４种结构类型。这些地层结构很难用湖平面变化来解释其成因，因此提出构造运动、气候变化为陆相断陷湖盆层序发育主控因素的观点，划分出构造层序与气候层序两大类。构造层序又分简单断坳层序、同生断坳层序和多期断坳层序。它们具有不同的层序地展模式。
According to seismic sections, drilling data explanations, log analyses and geochemical characters, authors studied the sequence stratigraphic structures of Paleogene in Dongying sag, and classified them into 4 types of internal structure- Ⅰ,Ⅱ,Ⅲ, Ⅳ. It is difficult to explain the formation of these structures through lake-level changes. SO it is put forward that tectonic movements and climatic changes are the main controlling factors of evolution of lacustrine fa-nit-depression lake basin sequence, and divided sequence into tectonic sequence and climatic sequence according to the controlling factors. Moreover, tectonic sequence was divided into simple fault-depression sequence, synsedimentary fault-depression sequence and multi-time fault-depression sequence. different sequences have different system tracts.
出处
《石油勘探与开发》
EI
CAS
CSCD
北大核心
1996年第5期20-23,共4页
Petroleum Exploration and Development
基金
山东省自然科学基金
关键词
湖相盆地
断陷盆地
层序地层学
石油
Lake basin
Faulted basin
Sequence stratigraphy
Climate
Syngenetic fault
Dongying sag
