摘要
北黄海东部坳陷的太阳区块富含中生代孢子、花粉化石。根据化石属种与含量的变化,自下而上划分出三个孢粉组合:即中侏罗世晚期(Bathonian-Callovian)的Cyathidites-Cycadopites-Quadraeculina组合,晚侏罗世的Classopollis-Protopinus-Callialasporites组合和早白垩世早、中期的Lygodiumsporites-CicatricosisporitesSchizaeoisporites组合。孢粉化石研究证实北黄海东部坳陷存在中侏罗世地层。
Abundant Mesozoic spores and pollen have been found from drill core and cutting samples from the Eastern Depression of the North Yellow Sea Basin. Three palynological assemblages can be recognized including, in stratigraphic order, 1) the Cyathidites-Cycadopites-Quadraeculina assemblage, 2) the Classopollis-Protopinus-Callialasperites assemblage, 3) the Lygodiumsporites-Cicatricosisporites-Schizaeoisporites assemblage. Based on the characteristics of these sporopollen assemblages, the first assemblage is considered to be Bathonian-Callovian in age;the second assemblage Late Jurassic in age, and the last assemblage early to middle Early Cretaceous in age. The palynological data indicate that there may exist Middle Jurassic sediments in the study area.
作者
陈书伟
魏文艳
龚胜利
代黎明
杨雄涛
庾永钊
吴杰澎
CHEN Shu-wei;WEI Wen-yan;GONG Sheng-li;DAI Li-ming;YANG Xiong-tao;YU Yong-zhao;WU Jie-peng(CNOOC Energy Tech-Drilling & Production Co,Tianjin 300452;CNOOC (China)Co.Ltd.Tianjin Branch,Tianjin 300459)
出处
《地层学杂志》
CSCD
北大核心
2019年第1期51-62,共12页
Journal of Stratigraphy
基金
中国海油石油北黄海区块勘探实验分析检测项目资助
关键词
孢粉组合
中侏罗世
晚侏罗世
早白垩世
东部坳陷
北黄海
spores and pollen
sporopollen assemblage
Middle Jurassic
Late Jurassic
Early Cretaceous
North Yellow Sea Basin
