肃南县上白土湾子一带铁矿成因研究

Study on the Genesis of Iron Ore in the Area of Shangbaituwanzi,Sunan County

矿床成因是地质工作者对不同时代、不同地区的同类型矿床进行比较,总结出的地层、构造及围岩蚀变等一系列有利于矿床形成的地质条件。祁连山是重要成矿带,上白土湾子铁矿位于肃南裕固族自治县(简称肃南县),地处祁连山中西部,产出于长城系(Ch)含铁千枚状板岩中,属沉积变质型铁矿,同时受特定构造(西北向韧脆性断裂)的控制,属双重控制性矿床。

The genesis of the deposit is a series of geological conditions conducive to the formation of the deposit,such as stratum,structure and wall rock alteration,summarized by geologists after comparing the same type of deposits in different ages and regions.Qilian Mountains is an important metallogenic belt,Shangbaituwanzi Iron Mine is located in Sunan Yugur Autonomous County(hereinafter referred to as Sunan County),located in the central and western Qilian Mountains,which occurs in the iron-bearing phyllitic slate of the Great Wall System(Ch),belongs to the sedimentary metamorphic iron deposit,and is controlled by a specific structure(northwest ductile brittle fracture),belonging to a dual controlled deposit.