摘要
利用钻井、测井、露头和地震等资料采用沉积学、层序地层学、地震地质学等方法,研究济阳坳陷馆陶组沉积特征,并进行了层序地层划分,结果发现:济阳坳陷馆陶组地层主要发育河流相沉积,馆陶组下段存在以浅水湖泊为背景的辫状河三角洲沉积,馆陶组上段发育湖泊三角洲沉积以及曲流河浅水三角洲沉积,在此基础上,进行了层序界面识别与层序划分,可将馆陶组地层可划分出一个构造层序,2个三级层序,层序底界面都为I型层序界面,每个层序内又可划分出3个体系域,即低水位体系域、扩张体系域和高水位体系域。
By using drilling,logging,and seismic data,sedimentology,sequence stratigraphy methods, earthquake geology,sedimentary characteristics of Guantao formation in Jiyang depression have been stud-ied,and the sequence stratigraphy has been divided.It is found that：Guantao formation in Jiyang Depres-sion mainly developed fluvial facies sediments,braided river delta sediments with shallow lakes as the background existed in the lower section of Guantao formation,and lake delta sediments and shallow mean-dering river delta sediments developed in the upper section of Guantao foramtion.On these basis,sequence interface identification and sequence stratigraphy division have been carried out.Guantao formation can be divided into a tectonic sequence and two third-order sequences.Sequence end interfaces are type Ⅰ se-quence boundary.Each sequence can be divided into three systems,that is low water level system,expan-sion system,and domain and HST.
出处
《山东国土资源》
2014年第1期8-12,共5页
Shandong Land and Resources
关键词
沉积特征
层序
馆陶组
济阳坳陷
Sedimentary features
sequence
Guantao formation
Jiyang dep ression
