摘要
利用野外资料、地震资料、煤田钻孔资料以及古生物资料,对松辽盆地外围探区敦化盆地的代表性地层划分方案进行了梳理,通过敦化盆地与周缘盆地之间的对比和分析,得出下列认识:(1)明确了珲春组的时代为始新世—渐新世;(2)指出白垩系上统龙井组地层在敦化盆地内可能是不存在的;(3)将原帽儿山组上段和下段分别划归泉水村组和长财组;(4)认为大砬子组、泉水村组、长财组和屯田营组在敦化盆地内是存在的,并通过盆间岩性地层和古生物地层对比指出大砬子组的时代可能为早白垩世阿普特期(Aptian)—阿尔布期(Albian),长财组时代可能为早白垩世贝利阿斯期—阿普特期;(5)对敦化盆地内几个地方地层名称的使用进行了修正;(6)建立了敦化盆地内目前可供参考使用的地层序列。
The authors used the field data, seismic data, coal field drilling and analyze the representative stratigraphic division schemes for the peripheries of the Songliao basin, and got the following understandings： data and paleontological data to compile Dunhua basin-coal prospect area at （1） the age of the Huichun Formation is Eocene-Oligocene; （2） the Upper Cretaceous Longjing Formation may not exist in the basin; （3） the upper member and lower member of the so-called Mao＇ershan Formation should be assigned to the Quanshuicun Formation and Changcai Formation; （4） the Dalazi, Quanshuicun, Changcai and Tuntianying formations do exist in the basin, of which the Dalazi Formation and Changcai Formation might be Early Cretaceous Aptian-Albian and Berriasian-Aptian in age respectively according to the lithostratigraphic and biostratigraphic correlation between the Dunhua basin and its neighboring basins;（5） the wrong uses of some local formation names at several sites of the basin are revised; and （6） a stratigraphic sequence is established in the Dunhua basin, which may be used for reference at present.
出处
《中国地质》
CAS
CSCD
2008年第1期40-53,共14页
Geology in China
基金
四川省重点学科建设基金项目(SZD0414)资助
关键词
敦化盆地
侏罗系
新近系
地层划分对比
Dunhua basin
Jurassic
Neogene
stratigraphic division and correlation
