Sporopollen Assemblages from the Cretaceous Yimin Formation of the Hailar Basin, Inner Mongolia, China
Three sporopollen assemblages are recognized for the first time from the Cretaceous Yimin Formation in the Hailar Basin of eastern Inner Mongolia.They are (in ascending order): the Impardecispora-AequitriraditesClavatipollenites assemblage; the Triporoletes-Pilosisporites-Asteropollis assemblage; and the AppendicisporitesAsteropollis-Tricolpites assemblage,distributed in Members 1,2 and 3 of the Yimin Formation respectively.Recognition of this biostratigraphic sequence is very important for the division and correlation of the Yimin Formation in the basin.Meanwhile,the age of the Yimin Formation is considered to be Barremian to Early Albian based on the palynological data.
作 者： WAN Chuanbiao QIAO Xiuyun Xu Yanbin SUN Yuewu REN Yanguang JIN Yudong GAO Ping LIU Tongyan 作者单位： WAN Chuanbiao(Exploration and Development Research Institute ofDaqing Oilfield Company Ltd.,Daqing,Heilongjiang 163712;College of Earth Sciences,Jilin University,Changchun,Jilin 130061)QIAO Xiuyun,Xu Yanbin,REN Yanguang,JIN Yudong,GAO Ping,LIU Tongyan(Exploration and Development Research Institute ofDaqing Oilfield Company Ltd.,Daqing,Heilongjiang 163712)
SUN Yuewu(Research Center of Paleontology and Stratigraphy,Jilin University,Changchun,Jilin 130026)
刊 名： 地质学报（英文版） SCI 英文刊名： ACTA GEOLOGICA SINICA 年，卷(期)： 2005 79(4) 分类号： P5 关键词： Cretaceous Barremian-Early Albian sporopollen assemblage angiosperms Hailar Basin Inner Mongolia