甘肃省肃南县头道沟铁矿地质特征  

Geological Characteristics of the Iron Ore of Toudaogou in Sunan County, Gansu Province

作　　者：谈应范[1] 

机构地区：[1]甘肃省有色金属地质勘查局兰州矿产勘查院,甘肃兰州730046

出　　处：《甘肃冶金》2017年第4期55-57,共3页Gansu Metallurgy

摘　　要：勘查区位于秦祁昆造山系-北祁连弧盆系-北祁连蛇绿混杂岩带一隅。矿区内出露地层较为简单,除零星第四系外,均为长城纪桦树沟组。总体上为一套类复理石含铁建造,呈北西-南东向展布。除铁矿层外,均为千枚状板岩类。岩性与区域地层颇为相似,主要组分相同,但次要成分不尽一致,各层之间均呈整合接触,或呈渐变关系。含铁千枚状板岩分布于矿区中部。其岩性为灰黑色千枚状板岩夹含铁碧玉条带,是赋矿的主要层位。矿床成因属喷气喷流沉积变质热液迭加矿床。Exploration area located in the northern qilian qinling-qilian-kulun made mountains - arc basin system - a cor- ner of the north qilian ophiolitic melange belt.Mining area in the open country layer is relatively simple, in addition to the scattered quaternary, ji birch groove group are the Great Wall. On the whole, as a kind of flysch iron formation, in the north west - south east to distribution. In addition to iron ore layer, are thousands of pieces of SLATE types. Lithology and regional strata are similar, the main components are the same, but different secondary ingredients, are in conformable con- tact with the between each layer, or a gradient relationship. Iron thousand pieces of SLATE is distributed in the mining area in central. Its lithology is film of thousand pieces of SLATE clip iron jade belt, is the main ore horizon. Genesis belongs to jet flow sedimentary metamorphic hydrothermal superposition ore deposit.

关 键 词：地质特征 头道沟铁矿 喷气喷流沉积变质热液迭加矿床 

分 类 号：P618.31[天文地球—矿床学]