目的研究吐鲁番-哈密盆地台北凹陷黄山街组和郝家沟组的地层特征和孢粉组合。方法利用该区4口钻井52块岩心样品进行孢粉化石分析、鉴定、统计和比较。结果鉴定出孢粉化石51属56种;建立了黄山街组Aratrisporites—Apiculatisporites—Piceites组合和郝家沟组Osmundacidites-Aratrisporites—Cycadopites组合。结论台北凹陷黄山街组和郝家沟组的地质时代为晚三叠世。
Aim To study the stratigraphic features and sporopollen assemblages of the Huangshanjie and Haojiagou formations in the Taibei subbasin of the Turpan-Hami Basin. Methods By a comparative analysis of sporopollen fossils in 52 samples from 4 boreholes. Results 56 Species of fossil spores and pollen assigned to 51 genera are recognized, and two sporopollen assemblages are established in ascending order as follows: Aratrisporites-Apiculatis- poris-Piceites assemblage (of the Huangshanjie Fm. ) and Osmundacidites-Aratrisporites-Cycadopites assemblage (of the Haojiagou Fro. ). Conclusion The Huangshanjie and Haojiagou Formations are Late Trassic in age, and their relative correlation within China and abroad are ascertained.