河南陕县瓦碴坡铝土矿床地质特征及成因探讨

Geological Characteristics and Genesis of Wachapo Bauxite Deposit,Henan Province

矿床产于下古生界碳酸盐岩不整合面上,严格受沉积间断面的控制。矿区及外围是由3个矿带、30余个矿体组成的大型铝土矿床,是河南省内主要富铝(黏)土矿成矿带之一。矿床受潮湿热带气候中形成的红土化与成矿密切相关;侵蚀面上形成大小不等的洼地及溶斗是铝土矿的定位空间,海湾泻湖相沉积环境是铝土矿床形成的有利条件。研究表明,矿床属于海相成因的短距离搬运-机械沉积为主的铝土矿类型,认为此区具有较好的铝土矿成矿前景。

The Wachapo bauxite deposit exists in time of Paleozoic erathem carbonas rock unconformity surface, accepts deposition disconnection controlling soft and floury strictly. The large-scale bauxite deposit is composed of .3 ore belts, more than 30 ore bodies, and is one of the main rich aluminium （sticky） ore belts in Henan province. The laterate-rization and mineral deposit forms are relative closely to the damp tropical climate; the depression unequal in size on the surface and dissolving fighting against the allocation are the locating space of the bauxite deposits. That the bay lagoon deposits each other is the advantage of the bauxite deposit formation. The research shows that the mineral deposit belongs to marine facies cause of formation short distance carry-machinery deposition give first place to bauxite type.