【摘要】 本文研究了吐哈盆地三叠系各层位的孢粉分布特征，认为可以划分３个孢粉组合：烧房沟组、韭菜园组的单脊双囊粉属（Ｃｈｏｒｄａｓｐｏｒｉｔｅｓ）一圆形粒面孢属（Ｃｙｃｌｏｇ－ｒａｎｉｓｐｏｒｉｔｅｓ）一背光孢属（Ｌｉｍａｔｕｌｍｐｏｒｉｔｅｓ）组合；克拉玛依组的宽肋粉属（Ｔａｅｎｉｏｐｏｒｉｔｅｓ）－阿里粉属（Ａｌｉｓｐｏｒｉｔｅｓ）一犁形孢属（Ａｒａｔｒｉｓｐｏｒｉｔｅｓ）组合；郝家沟组、黄山街组的阿里粉属（Ａｌｉｓｐｏｒｉｔｅｓ）－苏铁粉属（Ｃｙｃａｄｏｐｉｔｅｓ）－圆形锥瘤抱属（Ａｐｉｃｕｌａｔｉｓｐｏｒｉｔｅｓ）组合。此项研究为该区地层划分与对比提供了古生物依据。更多还原

【Abstract】 According to the distribution features of Triassic spore-pollen fossils from Turban--Hami basin three spore and pollen assemblages have been divided. In ascending order, they are:. Chordasporites-Cyclogranisporites-Limatulasporites assemblage,Ⅱ. Taeniaeoporite- Alisporites- Aratrisporites assemblage,Ⅲ. Alisporites-Cycadopiterr Apiculatisporites assemblage.The three assamblages exist in three formations: Shaofanggou-Jincaiyuan, Kelamayi and Haojiagou-Huangshanjie formations. This, represent, the early Triassic (T1s-T1J), the middle-later Triassic (T2-3k), and the later Triassic (T3s--T3hs) respectively.更多还原