摘要
为扩大勘探领域 ,运用古生物资料对大庆外围盆地的古气候进行了研究。外围盆地侏罗纪—早白垩世早期发育的地层有早侏罗世海拉尔盆地的东宫组 ,中侏罗世三江盆地的绥滨断陷的绥滨组 ,晚侏罗世三江盆地的东荣组、虎林盆地的裴德组、七虎林组 ,早白垩世早期鸡西盆地、三江盆地的滴道组、城子河组、穆棱组、虎林盆地的下云山组、上云山组 ,在这些组中除晚侏罗世东荣组、裴德组、七虎林组外 ,其它各组都产有比较丰富的孢粉化石。未发现孢粉化石的层位 ,依据植物化石 ,得出早侏罗世东宫组为潮湿的暖温带气候 ,中侏罗世绥滨组为潮湿的北亚热带气候 ,晚侏罗世为潮湿的暖温带气候 ,早白垩世早期滴道组、下云山组为潮湿的北亚热带气候 ,城子河组、上云山组为潮湿的中亚热带气候 。
The developing strata during Jurassic early stage of Early Cretaceous in peripheral basins include the Donggong Formation of Early Jurassic epoch(Hailaer basin);the Suibin Formation of Mid Jurassic (Sanjiang Basin);the Dongrong Formation(Sanjiang Basin), Peide Formation and Qihulin Formation(Hulin Basin) of Later Jurassic ;as well as the Didao Formation, Chengzihe Formation and Muleng Formation(Jixi Basin and Sanjiang Basin) ;the Later Yunshan Formation and Early Yunshan Formation(Hulin basin) of early stage of Early Cretaceous. Among them, the others produce fairly abundant sporopollen fossils except the Dongrong Formation, Peide Formation and Qihulin Formation of of Later Jurassic. Using sporopollen fossil data, the paper hasn't discovered the layer location of sporopollen fossil through study on the paleoclimate during Jura early stage of Early Cretaceous in peripheral basins. According to the plant fossil, the study makes conclusions that the Donggong Formation of Early Jurassic epoch is damp warm temperature zone climate, that the Suibin Formation of Mid Jurassic is the north subtropical zone climate of damp, both the Chengzihe Formation and the Early Yunshan Formation are the middle subtropical zone climate of damp, and that the Muleng Formation is the south subtropical zone climate of damp.
出处
《大庆石油地质与开发》
CAS
CSCD
2002年第4期9-10,共2页
Petroleum Geology & Oilfield Development in Daqing
关键词
外围盆地
侏罗纪
早白垩世
古气候
古生物
找煤
油气资源
peripheral basins
Jurassic period
early stage of Early Cretaceous epoch
paleoclimate
