新疆准噶尔盆地东北缘孔雀坪剖面二叠纪金沟组孢粉组合及其地层意义  

SPOROPOLLEN ASSEMBLAGE FROM THE PERMIAN JINGOU FORMATION AT THE KONGQUEPING SECTION IN THE NORTHEAST MARGIN OF THE JUNGGAR BASIN,XINJIANG,NW CHINA AND ITS STRATIGRAPHICAL SIGNIFICANCE

作　　者：罗正江[1] 王睿[1] 詹家祯[1] 殷新花[1] 陈一飞[1] 肖继南[1] 

机构地区：[1]中国石油新疆油田公司实验检测研究院,克拉玛依834000

出　　处：《微体古生物学报》2014年第3期311-319,共9页Acta Micropalaeontologica Sinica

摘　　要：准噶尔盆地东北缘孔雀坪剖面金沟组孢粉组合中Protohaploxypinus,Striatoabieites等具肋双气囊花粉非常发育,类型丰富,达7属32种之多;Cordaitina,Zonalasporites等单气囊花粉分异度较高,但含量较低;少量出现单沟花粉、具肋纹花粉、无肋双气囊花粉和蕨类植物孢子等。所见孢粉类型中约1/2的已知种在新疆北部只见于二叠纪地层中,1/3已知种在晚石炭世至二叠纪地层中均可见到。孢粉组合特征与盆地南缘下二叠统塔什库拉组上部组合相似,地质时代为早二叠世空谷期。Bisaccate pollen taxa such as Protohaploxypinus and Striatoabieites,etc. are very abundant and diverse in the sporopollen assemblage from the Jingou Formation at the Kongqueping section in the northeastern margin of the Junggar Basin, Xinjiang, NW China. They are represented by 32 species in 7 genera. Diversity of monosaccate pollen such as Cordaitina and Zonalasporites are high, but with low abundence. Still occur small amounts of monocolpate, non-saccate striate pollen,bisaccate non-striate pollen and pteridophytic spores. About 1/2 species of the present as- semblage have been recorded in the Pemian strata of the northern Xinjiang, and 1/3 species are confined to the Late Carboniferous to the Permian. The characteristics of the assemblage are comparable to those known from the upper part of the Tashikula Formation in the southern margin of the Junggar Basin. Therefore,we conclude that the assem- blage-bearing strata should be of the Early Permian and possibly Kungurian in age.

关 键 词：孢粉组合 金沟组 早二叠世 孔雀坪剖面 准噶尔盆地东北缘 新疆 

分 类 号：Q914[天文地球—古生物学与地层学]