依舒地堑中、新生代地层划分对比研究新进展  

NEW PROGRESSES OF MESOZOIC AND CENOZOIC STRATIGRAPHIC DIVISION AND CORRELATION STUDIES FOR YISHU GRABEN

作　　者：万传彪[1] 薛云飞[1] 金玉东[1] 张昕[1] 张世祥[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院

出　　处：《大庆石油地质与开发》2014年第5期179-185,共7页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家自然科学基金项目“吉林东部陆生植物对早白垩世大洋缺氧事件的响应”(31270277)

摘　　要：为了解决依舒地堑井下地层划分对比问题,在野外地质剖面观测、古生物分析鉴定、常量及微量元素检测、火山岩同位素测试的基础上,运用多元地层学技术方法,结合依舒地堑最新钻并地层资料,提出了依舒地堑地层划分新方案.地层层序自下而上划分为：早白垩世东山组,早白垩世晚期—晚白垩世早期猴石沟组,古新世乌云组,始新世新安村组、达连河组,渐新世宝泉岭组,中新世富锦组,中新世—上新世船底山组.建立了依舒地堑地层划分对比标志,其中岩性一级对比标志6个,古生物一级对比标志8个,确认古生物和同位素年龄是大区域对比标志.新方案划分对比了70口井地层,建立依舒地堑盆地级综合地层剖面,确立了依舒地堑井下地层序列与邻区地层对比关系,确定了各组地质时代,建立了与国际地质年代表的对比关系。In order to solve the problem of the underground strata correlation for Yishu Graben,on the basis of the field investigation of the geological sections.palaeontological analysis and certification,analyses of the major and trace elements and isotopic test of the volcanic rocks,by means of multiple stratigraphic techniques and methods,combined with the latest drilling data in Yishu Graben,a new stratigraphic classifying scheme about Yishu Graben is proposed.Lower Cretaceous Dongshan Formation,Late Lower Cretaceous-Early Upper Cretaceous Houshigou Formation,Paleocene Wuyun Formation,Eocene Xin＇ ancun and Dalianhe Formations,Oligocene Baoquanling Formation,Miocene Fujin Formation and Miocene-Pliocene Chuandishan Formation are divided from bottom to top.The stratigraphic classifying and correlating markers of Yishu Graben are established,including 6 lithology-level first-grade markers and 8 paleontology-level first-grade markers,the regional markers are to confirm the paleontology and isotopic age.The stratigraphic divisions and correlations of 70 wells are conduct according to the new plan,the basin-level comprehensive stratigraphic profile is established,the relationships in stratigraphic correlation between the underground strata sequences and the adjacent areas are determined.And furthermore the geological age of each formation is made clear.The comparison relationship with international geologic time scale is ensured.

关 键 词：依舒地堑 白垩纪 古近纪 新近纪 生物地层学 地层对比 

分 类 号：P534[天文地球—古生物学与地层学]