山东国土资源
山東國土資源
산동국토자원
LAND AND RESOURCES IN SHANGDONG PROVINCE
2014年
1期
8-12
,共5页
杨其栋%魏欣伟%王峰%申欢
楊其棟%魏訢偉%王峰%申歡
양기동%위흔위%왕봉%신환
沉积特征%层序%馆陶组%济阳坳陷
沉積特徵%層序%館陶組%濟暘坳陷
침적특정%층서%관도조%제양요함
Sedimentary features%sequence%Guantao formation%Jiyang dep ression
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。
利用鑽井、測井、露頭和地震等資料採用沉積學、層序地層學、地震地質學等方法,研究濟暘坳陷館陶組沉積特徵,併進行瞭層序地層劃分,結果髮現:濟暘坳陷館陶組地層主要髮育河流相沉積,館陶組下段存在以淺水湖泊為揹景的辮狀河三角洲沉積,館陶組上段髮育湖泊三角洲沉積以及麯流河淺水三角洲沉積,在此基礎上,進行瞭層序界麵識彆與層序劃分,可將館陶組地層可劃分齣一箇構造層序,2箇三級層序,層序底界麵都為I型層序界麵,每箇層序內又可劃分齣3箇體繫域,即低水位體繫域、擴張體繫域和高水位體繫域。
이용찬정、측정、로두화지진등자료채용침적학、층서지층학、지진지질학등방법,연구제양요함관도조침적특정,병진행료층서지층화분,결과발현:제양요함관도조지층주요발육하류상침적,관도조하단존재이천수호박위배경적변상하삼각주침적,관도조상단발육호박삼각주침적이급곡류하천수삼각주침적,재차기출상,진행료층서계면식별여층서화분,가장관도조지층가화분출일개구조층서,2개삼급층서,층서저계면도위I형층서계면,매개층서내우가화분출3개체계역,즉저수위체계역、확장체계역화고수위체계역。
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.