甘肃省银元素地球化学特征  

GEOCHEMICAL CHARACTERISTICS OF SILVER IN GANSU PROVINCE

作　　者：刘建宏[1] 李文胜[1] 

机构地区：[1]甘肃省地质调查院,甘肃兰州730000

出　　处：《甘肃地质学报》2001年第2期35-45,22,共12页Acta Geologica Gansu

摘　　要：甘肃省银元素地球化学分布由北向南 ,从低背景向中、高背景过渡 ,局部形成宏观异常带 ,银元素平均值也有北低南高的趋势。　　通过对全省大量区域化探资料的分析解剖 ,初步总结出不同地质构造背景中银的成矿地球化学条件。分布于关家沟复背斜西段的银异常带及分布于白龙江复背斜中的银异常带是我省重要的金、银富集的地球化学块体 ,具有潜在的可观的资源量 ,应作为省内银矿勘查工作的突破口。From south to north in Gansu Province,geochemical distribution of silver shows its background value from low to median-high value grading,local formed megascopic anomaly belt,its mean value has tendency increasing to wards south. Through analysis of a great number regional geochemical exploration data in Gansu Province,we have found out Ag-metallogenic geochemical condition in different geological structure setting.Ag-anomaly in west part of Guanjiagou composite anticline and Bailongjiang anticlinorium are important geochemical masses for Au-Ag enrichment in Gansu Province, and there is a great potential quantity of Au,Ag resources there,and where should take it as a target for hunting Ag ore deposit.

关 键 词：银元素 地球化学特征 异常组合 资源量 甘肃 银矿床 地质构造 

分 类 号：P595[天文地球—地球化学]