甘肃阳山矿带地质特征及找矿靶区优选

Geological Characteristics and Prospecting Target Selection of the Yangshan Gold Belt,Gansu Province

阳山金矿带位于勉略缝合带北侧,从西向东划分为泥山、葛条湾、安坝、高楼山、阳山和张家山6个矿段,区内出露地层主要有下泥盆统桥头岩组和屯寨岩组,由于受多期次构造的挤压拉伸,岩石变形形迹明显。在前人工作的基础上,通过深入分析阳山矿带地质特征及物化探异常特征,并结合近年来地质勘查工作的最新进展,在阳山矿带识别出5个重点找矿靶区,分别位于高楼山林区、观音坝地区、无价山地区、360和311号脉深部,这些找矿靶区的圈定为后续攻深找盲、探边摸底提供了勘查方向。

The Yangshan gold deposit is distributed in the north of Mian-Lue suture zone,meanwhile,there are six ore blocks from west to east which are Nishan,Getiaowan,Anba,Gaoloushan,Yangshan as well as Zhangjiashan. Due to the multiphase tectonic extrusion tensile and the obvious rock deformation traces,thus exposure stratums are primarily the devonian bridge rock group and tuen mun village groups.On the basis of predecessors’ work,through in-depth analysis of the geological and geophysical-geochemical anomaly characteristics of Yangshan deposit, combined with the latest development of geological exploration in recent years,five key prospecting target areas in the Yangshan ore belt were identified,which located in Gaoloushan,Guanyinba,Wujiashan region,and deep of number 360 and 311 series.Therefore,these framed can provide the exploration direction for subsequent attack deep prospecting target areas for the blind and delineation baseline.