祁连山中段托勒山地区奥陶纪火山岩岩金矿床控矿因素分析  

Ore-control Factors of Rock Ore Deposits Hosted in the Ordovician Volcanic Rocks in the Tuole Area of the Central Qilian Mountains

作　　者：付顺[1] 曹德智[2] 朱迎堂[1] 马秀兰[2] 郑振华[2] 张世成[2] 

机构地区：[1]成都理工大学信息管理学院,四川成都610059 [2]青海省地质调查院,青海西宁810012

出　　处：《地质与勘探》2014年第1期88-95,共8页Geology and Exploration

基　　金：国家财政部专项计划科技工程项目-青藏高原油气资源战略选区调查与评价(编号:2004YQ636A);中国地质调查局计划项目"华南扬子古大陆演化及资源效应"之"大巴山前缘及邻区构造与岩溶景观形成与分布研究"(编号:1212011220902)联合资助

摘　　要：祁连山中段托勒山岩金多分布在奥陶纪火山岩地层内,地层控矿特征十分明显。区内与火山活动有关的成矿作用主要是火山喷发后期火山热液形成的热液型矿床,其次是后期岩浆活动提供热源和大量的岩浆热液交代、充填形成的中低温热液矿床和接触蚀变型矿床。从找矿前景上来看,本区虽然金矿点、矿化点分布较多,但少有规模较大的矿床。因此本区找矿上应该以寻找火山热液蚀变型矿产为主。The rock gold in the Tuole area, the middle section of the Qilian Mountains, is mainly hosted in the Ordovician volcanic rocks of this area, and shows a significant control by strata. The mineralization related to volcanism is mainly hydrothermal ore deposits formed by volcanic hydrothermal flu- ids in the late period of volcanic eruption, and mid-low temperature hydrothermal deposits and contact alteration ore deposits formed by metasomatism and filling with material sources from the late period of magmatic activities. Viewed from prospecting prospect, it is clear that although there are many gold ore occurrences and mineralized distribution spots in this area, only a few large-scale ore deposits are found. The effort of ore-search in this area should focus on volcanic hydrothermal aheration type deposits.

关 键 词：控矿因素 岩金 火山岩 托勒山中段 

分 类 号：P588.244[天文地球—岩石学]