【摘要】 西天山阿吾拉勒一带石炭纪地层单位划分与厘定争议已久,本次1∶5万区域地质矿产调查,在阿吾拉勒一带发现一套碳酸盐岩、碎屑岩等浅海相沉积,其间采获丰富的珊瑚Gangamophyllum vetiforme,腕足类Gigantopra ductussp.和菊石Goniatites sp.等,时代为早石炭世晚期之大塘晚期—德坞期.其上覆与下伏均为火山岩,分布相对稳定,岩石组合特征明显,野外易识别,大区易对比,时代分别为晚石炭世和早石炭世.三者接触关系均为角度不整合,现将其进一步解体并由老到新厘定为大哈拉军山组、阿克沙克组和伊什基里克组.更多还原

【Abstract】 The confirming and blocking of Carboniferous stratigraphic units is disputed for more. The 1:50000 Regional Geologic and Mineral surveying discovers a suit of shallow marine carbonate rock—clastic rock building,it abundanted early Carboniferous wrists(Gangamophyllum vetiforme、corals(Gigantopra ductus)et al. fossils in the clastic rock which the age is early Carboniferous later DaTang late-DeWu time. The two suit volcanic rock which intervaled by the Akehsake Formation,which distributing are comparatively tranquilization,the characteristic of rock association are evidence,easily identified and distinguished,easily contrasted in the lage area,which just belong to early Carboniferous and late Carboniferous. The contact connection of three formations are angular unconformity,so the Carboniferous more disintegration three Formations rock-stratigraphic unit,thire are Dahalajunshan Formation、Akeshake Formation and Yishijilike Formation form old to new.更多还原