新疆阜东地区齐古组物源方向分析

摘要

物源方向分析对确定沉积物物源区位置、沉积物有效运移路径具有重要的意义。综合前人的研究思路和方法，笔者利用稳定重矿物分析法、ZTR分析法、沉积学方法、地层倾角测井物源分析方法对阜东地区齐古组的物源方向进行研究。结果表明，阜东地区齐古组古水流自东南向西北流动，物源方向为东南部。%The provenance analysis is vital significant to determine the positions of source areas and effective migration paths of the sediments. The provenance analysis in this study is based on the heavy mineral method,ZTR method,sedimentological method and stratigraphic dip logging in the Qigu Formation. It is shown that from SE to NW,the stability coefficients for the heavy minerals and ZTR index become progressively higher,while the sandstone+conglomerate contents are progressively getting lower. The palaeocurrents in the Qigu Formation were directed from SE to NW. All the evidences mentioned above suggest the southeastern origin of the sediments in the Qigu Formation.