【摘要】 为解决三塘湖含油气盆地卡拉岗组时代归属问题 ,以地表和井下所获得的孢粉及同位素年龄值为依据 ,对这一长期存有争议的问题进行了充分论证。研究认为 :该盆地的卡拉岗组与哈尔加乌组为同一时代的地层 ,没有上下关系 ,为一套以玄武岩和安山岩为主的火山喷发岩系 ,自下而上含Endosporites- Verrucosisporites - Fabalicypris (豆星介属 )和 Punctatisporites - Virkkipollenites -Protohaploxypinus两个化石组合带 ;在玄武岩和安山岩中获得 K- Ar年龄值分别为 2 6 0 .0 8Ma和2 86 .40 Ma,Rb- Sr年龄为 3 4 3 .80± 3 4 .0 0 Ma;其时代为晚石炭世至早二叠世。更多还原

【Abstract】 The age of Kalagang formation for Santanghu basin was a long-term controversial question. On the basis of the features of obtainable sporo-pollen assemblages and isotopic ages etc. in boring well and the earth′s surface, the age question of Kalagang formation has been discussed.The age of Kalagang and Haerjiawu formation is the same in this basin. They consist mainly of andesite and basalt, and contain two fossil assemblege zones of Endosporites-Verrucosisporites-Fabalicypris and Punctatisporites-Virkkipollenites-Protohaploxypinus, and get K-Ar isotopic ages of 260.08 Ma, 286.40 Ma and Rb-Sr isotopic age of 343.30±34.00 Ma. The age of Kalagang formation of late Carboniferous was early Permian.更多还原