Study On Granitoids In The North Of The Kumutage Sand-Ridge Area In Hami Region, Xinjiang

The studying region locates in the north of the Kumutage sand-ridge area in hami region xinjiang, The granitior belt had formed in the Tianshan orogenic belt in the middle-later haixi. Hakeqiale granitoid rock body is located in sourthern margin of zhungaer Plate and intruded Carboniferous haerlike's island arc zone. It can be recognized three stages magmatic impulsive activities: the (quartz) diorite, granodiorite, and adamellite from Early to Late in proper order. Their isotope ages are 265Ma.Their s is 1.7-3.3, and they belong to calc-alkali series. Their main petrochemical parameters have regular changes with the variety of SiO₂ content which evinced differentiate evolution features of consanguinity clearly. It indicated by Trace elements data and diagram that Hakeqiale rock is post—orogenic mantle-source metatexite granite. And have strongly contamination from crustal-source. The important evolution information in post—orogenic stage of zhungaer Plate is recorded by Hakeqiale granitoid rock during early Permain period.. The Chihu rock body locates in the middle part of the Qiugemingtashi—Huangshan submarine trench, Their isotope ages are 329Ma, which belongs to the calc—alkalic series with oversaturated aluminum and is comparatively rich in LEE. According to the discretion diagram of the structural environment, it belongs to volcanic arc developed from the crystalline basement. The formation is related to the Qiugemingtashi—Huangshan fault. Its magma derived from the mantle, which evolved towards acid and rich alkalic type. Longdong granitoid rock body is located in northern margin of Tarim Plate in Kumutage sand-ridge area, Eastern Tianshan, and intruded Carboniferous yamansu's island arc zone. It can be recognized three stages magmatic impulsive activities: the (quartz) diorite, granodiorite, and adamellite from Early to Late in proper order. Their isotope ages are 216Ma.Their s is 1.62-2.13, and they belong to calc-alkali series. Their main petrochemical parameters have regular changes with the variety of SiO₂ content which evinced differentiate evolution features of consanguinity clearly. It indicated by Trace elements data and diagram that Longdon rock is post—orogenic mantle-source metatexite granite. And have strongly contamination from crustal-source. The important evolution information in post—orogenic stage of Tarim Plate is recorded by Longdon granitoid rock during early Permain period.