准噶尔盆地腹部下侏罗统三工河组物源体系分析

摘要

In view of no unified understanding of the provenance system of Jurassic Sangonghe formation in hinterland of Junggar basin, this paper comprehensively analyzed the provenance system from the gravel composition, dip logging of stratum, detrital mineral coefficient of stability, rock grain-size and the ancient landform, and suggested that the Sangonghe sediment is controlled by another Karamay, Wuerhe and Kelameily prnvenances. It is of great significanee to guide the next step of exploration in this area.%准噶尔盆地腹部下侏罗统三工河组物源体系至今没有统一的认识。从砾石成分、地层倾角测井、碎屑矿物稳定系数、岩石粒度以及古地貌等方面进行了论证，对影响准噶尔盆地腹部地区三工河组沉积的物源体系进行了综合判定，认为研究区三工河组沉积受西北部的克拉玛依、乌尔禾和东部的卡拉麦里等3个物源控制，这对指导该地区下步的勘探具有重要意义。