松辽盆地南部沙河子组孢粉组合  

SPOROPOLLEN ASSEMBLAGE OF THE SHAHEZI FORMATION IN SOUTHERN SONGLIAO BASIN

作　　者：马凤荣[1] 付新[1] 张博 张树林[1] 

机构地区：[1]东北石油大学地球科学学院,黑龙江大庆163318 [2]中国石油大庆油田有限责任公司第一采油厂,黑龙江大庆163411

出　　处：《地质与资源》2014年第2期111-113,共3页Geology and Resources

基　　金：东北石油大学地球科学学院项目"松辽盆地南部深层地层研究"(合同编号JS09-W-13-J2-14-30)资助

摘　　要：松辽盆地南部沙河子组自下而上划分为2个孢粉组合.1)克拉梭粉(Classopollis)-拟云杉粉(Piceites)-紫箕孢(Osmundacidites)组合,分布于沙河子组一段.2)三角粒面孢(Granulatisporites)-三角瘤面孢(Lophotriletes)-无突肋纹孢(Cicatricosisporites)组合,分布于沙河子组二段.上述孢粉组合研究证明,沙河子组一段的地质时代为早白垩世凡兰吟期(Valanginian),沙河子组二段的地质时代为欧特里沃期(Hauterivian).Form bottom to top,the Shahezi Formation in the Southern Songliao Basin can be divided into two sporopollen assemblages,i.e.the Classopollis-Piceites-Osmundacidites assemblage and the Granulatisporites-LophotriletesCicatricosisporites assemblage.The former is distributed in the first member of the Shahezi Formation; while the latter,in the second member.Study on the sporopollen assemblages demonstrates that the first member of Shahezi Formation geochronologically belongs to the Valanginian Age of Early Cretaceous Epoch; while the second member,Hauterivian Age.

关 键 词：松辽盆地南部 沙河子组 孢粉组合 早白垩世 吉林省 

分 类 号：Q914.85[天文地球—古生物学与地层学] Q914.87[生物学—古生物学]