西北地质2016，Vol.49Issue(4)：179-188,10.
青海省曲麻莱县牙扎曲金矿床地质特征及成矿条件分析
Geological Features and Metallogenic Conditions of the Yazha Gold Deposit in Qinghai County,Qumalai Province
摘要
Abstract
After discussing the geological background of the Yazhaqu gold deposit and summariz-ingits geological characteristics,the author believes that the argillaceous slate and sandstone in Qingshuihe Formation of Triassic Bayanhar group serve as the ore-bearing rocks and the NWW fractures control the formation of this deposit.The exposed results of trench works show that the obvious tawny limonitization,silicification,chloritization and epidotization occurred in local min-ing area are beneficial to the formation of this gold deposit.The strata along Yazhaqu-Zhesainajiu area are composed of clay and sandy clastic rocks,mixing with a small amount of fine conglomer-ate and carbonate rock,which belongs to a set of turbidite facies flysch construction that formed in foreland basin.And the" Bouma sequence"is not completely developed in these strata,in which the mud debris andcarbon-bearing rock layer contain abundance gold,with strata and tec-tonic conditions for mineralization.Thus,this area has great potential to prospect the tectonic al-tered rock type gold deposit.关键词
牙扎曲/金矿床/地质特征/成矿条件Key words
Yazhaqu/gold deposit/geological feature/mineralization condition引用本文复制引用
刘江峰,王利文,刘会文,刘长财,李加才让..青海省曲麻莱县牙扎曲金矿床地质特征及成矿条件分析[J].西北地质,2016,49(4):179-188,10.基金项目
中国地质调查局地质调查项目(青藏专项)“青海省曲麻莱县牙扎曲地区 I46E003020、I46E004020、I46E005020三幅1∶5万区域地质矿产调查”(12120113033017) （青藏专项）
