准噶尔盆地腹部地区白垩系清水河组物源分析
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摘要
通过对砂岩碎屑组分和结构特征、重矿物组合、重矿物ZTR指数、地震剖面、沉积特征等方面的资料进行分析,认为准噶尔盆地腹部地区清水河组沉积时期存在北部、西北-西部和东部等3个外部物源;清水河组沉积早期存在盆内物源,其物源为车莫古隆起上的侏罗系头屯河组、西山窑组和三工河组。
On the basis of analyses on the detrital composition and structural feature of sandstone,heavy mineral combination,ZTR maturity index,seismic profiles and sedimentary characteristics,it is considered that there were three external provenances in the hinterland of Junggar basin when the Qingshuihe formation of Early Cretaceous deposited: the north provenance,the west-northwest provenance and the east provenance.Also,the intrabasinal provenance existed in the early period of Qingshuihe formation,which came from the deposits of Toutunhe formation,Xishanyao formation and Sangonghe formation of the Cretaceous in Chepaizi-Mosuowan palaeohigh.
引文
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