蒙古东戈壁盆地万利特凹陷特1井早白垩世孢粉组合  

EARLY CRETACEOUS SPOROPOLLEN ASSEMBLAGES FROM WELL TE 1 IN THE WANLITE DEPRESSION,EASTERN GOBI BASIN,MONGOLIA

作　　者：魏文艳[1] 贺振建[1] 边雪梅[1] 齐玉民 王香婷 陈书伟 吴金宝 

机构地区：[1]中国石化股份胜利油田分公司地质科学研究院,山东东营257015 [2]中海石油能源发展有限公司采油工程研究院,天津塘沽300452

出　　处：《微体古生物学报》2009年第2期164-172,共9页Acta Micropalaeontologica Sinica

摘　　要：将东戈壁盆地万利特凹陷特1井划分为三个孢粉组合:1.Cicatricosisporites-Classopollis-Piceaepollenites-Piceites组合,2.Perinopollenites-Cycadopites-Pinaceae-Walchiites组合;3.Laevigatosporites-Lygodiaceae-Peri-nopollenites组合,根据孢粉组合特征推测第一个孢粉组合倾向于早白垩世最早期Berriasian期,但也不排除属于晚侏罗世的可能,第二个组合为早白垩世Berriasian—Valanginian期,第三个孢粉组合为早白垩世Hauterivian—Bar-remian期。Abundant Early Cretaceous spores and pollen were found from Well Te 1 in the Wanlite Depression, East- ern Gobi Basin, Mongolia. Three assemblages have been divided,including： 1. Cicatricosisporites-Classopollis-Picei- tes-Piceaepollenites assemblage, 2. Perinopollenites-Cycadopites-Pinaceae-Walchiites assemblage, 3. Laevigato- sporites-Lygodiaceae-Perinopollenites assemblage. Based on the characteristics of the sporopollen assemblage, the first assemblage is assigned to the Berriasian （Early Cretaceous）, but may also possibly correspend to the Late Jurassic; the second assemblage is considered to be the Berriasian--Valanginian （Early Cretaceous）, and the third assemblage is equivalent to the Hauterivian Barremian of the Early Cretaceous.

关 键 词：孢粉组合 万利特凹陷 早白垩世 晚侏罗世 东戈壁盆地 蒙古 

分 类 号：Q913[天文地球—古生物学与地层学]