摘要
对孙吴—嘉荫盆地北部逊克县的嘉D1井采集的孢粉和沟鞭藻类化石进行了分析研究,划分出4个特征较明显的孢粉组合:富饶组Betulaepollenites-Schizaeoisporites-Polypodiaceaesporites组合,总体反映晚白垩世晚期Maastrichtian期的特点;太平林场组Gothanipollis-Gabonisporis-Balmeisporites组合,时代为晚白垩世Santonian-Campanian期;淘淇河组上段Hammenia-Taxodiaceaepollenites-Appendicisporites组合,时代为早白垩世Aptian-Albian期;淘淇河组下段Cicatricosisporites-Cyathidites-Osmundacidites组合,时代为早白垩世Valanginian-Barremian期。这是迄今该地区据钻井实际资料所发现的较连续孢粉组合序列。
Abundant palynomorphs and dinoflagellate fossils were collected systematically were gained from the Jia D1 well,45 km to the southwest of Xunke Town, Heilongjiang,China. Four palynological assemblages were recognized in descending order:Betulaepollenites-Schizaeoisporites-Polypodiaceaesporites assemblage from the Furao Formation may represent the characters of Maastrichtian. The age of Gothanipollis-Gabonisporis-Balmeisporites assemblage from the Taipinglinchang Formation might be Santonian-Campanian. Hammenia-Taxodiaceaepollenites-Appendicisporites assemblage from the upper member of Taoqihe Formation might be Aptian-Albian in age and Cicatricosisporites-Cyathidites-Osmundacidites assemblage distributed in the lower member of Taoqihe Formation might be aged in Valanginian-Barremian.
出处
《世界地质》
CAS
CSCD
2005年第1期11-17,共7页
World Geology
关键词
孙吴-嘉荫盆地
嘉DI井
白垩纪
孢粉组合
Sunwu-Jiayin basin
Well Jia D1
Cretaceous
palynological assemblages
