【摘要】 图尤克阿秀组为新疆阿合奇县托什干河上游一带1∶5万区域地质矿产调查工作时建立的岩石地层单位.区域层位上,该组与下伏地层托格迈提组为平行不整合接触,与上覆地层阿依里河组为整合接触.其下部为一套火山岩与碳酸盐岩岩石组合,中部为一套复理石建造,上部为一套深海硅质岩建造.总厚度大于3 523 m.经对该组中腕足、三叶虫、放射虫鉴定结果和对玄武岩全岩40Ar/39Ar年龄测试,确定其地质时代为早石炭世.该套地层是早石炭世南天山微板块和塔里木板块裂解,陆间小洋盆慢速扩张的产物.更多还原

【Abstract】 On the basis of the 1∶ 5 0,000 regional geology and mineral resources investigation of Toxkan river aheqi County.Tu Youke Axiu formation was found as a lithostratigraphic unit.It is parallel unconformity with the underlying Tuogemaiti formation(D2t) and conformable contact with the overlying Ayilihe formation(C2ay).Its lower part is a set of intraplate volcanic rock and carbonate rock which reflecting ocean island setting.Middle is a set of flysch formation,upside is a set of deep sea siliceous rock and the total thickness is bigger than 3523 meters.Through the identification of the brachiopod,trilobite and radiolarian and 40Ar/39Ar isotopic age test determined that its geological age should be C1.The formation is the product of the south of the Tianshan micro-plate and Tarim plate cracking and small oceanic basin slow the expansion.This new set of rocks found not only enriched the south of the Tianshan district stratigraphic sequence of units,but also provided new information to study the Late Paleozoic tectonic evolution of southwest Tianshan Mountains.更多还原