四川金阳地区水系沉积物磷元素地球化学特征及地质意义

通过对四川金阳地区1∶200000和1∶50000水系沉积物磷元素等地球化学特征进行对比研究,发现测区磷元素富集特征,在峨眉山玄武岩和麦地坪亚段地层中背景值较高,且在麦地坪亚段地层富集成矿。另外,磷异常与峨眉山玄武岩地层出露吻合较好,这对峨眉山玄武岩的圈定有一定的指示作用。

Based on the comparative study of the geochemical characteristics of phosphorus elements in 1:200000 and 1:50000 stream sediments in Jinyang,Sichuan Province,it is found that the characteristics of phosphorus enrichment in the survey area are higher in Emeishan basalt and Maidiping subformation,and enriched and mineralized in the Maidiping submember.In addition,the phosphorus anomaly is in good agreement with the exposure of Emeishan basalt strata,which can indicate the delineation of Emeishan basalts to a certain extent.