海底矿物资源矿床地质及其成因特征  

GEOLOGIC FEATURES AND GENESIS OF MARINE MINERAL RESOURCES

作　　者：周柳霞[1] 

机构地区：[1]冶金工业部长沙矿冶研究院

出　　处：《中国锰业》1992年第1期45-49,共5页China Manganese Industry

摘　　要：多金属结核和富钴结壳以锰、铁的氧化物和氢氧化物为主要成分。热液矿床也富含锰(30—38％)。海洋多金属结核的形成与沉积物有直接关系,生长在沉积物下面20—30cm处最富。高品位的结核主要分布在4000—6000m深度的大洋海底平原上;富钴结壳主要分布在100O—3000m深度的海山或海台的项部和斜坡上;热液多金属的硫化物主要分布在水深2600m的活动洋脊项部小丘上。还介绍了海底矿物性质、储量分布、富集密度(丰度)、海底矿床地质特征及成矿原因。In metalliferous nodules and cobalt—enriehed crusts,oxides and hydroxides of manganese and iron are main elemental composition. Hydrothermal deposits also contain rich man ganese (30—38％). The formation of marine metalliferous nodules have close connection with the sediment with the richest nodules lain 20—30 cm below the sediment. High grade nodules are distributed on the deep sea plains, 4000—6000m below the sea leael Cobalt—enriched crusts are scattered on the top and slope of the seamount type sea plateau. Hydro—thermal metalliferrous sulfides are dispersed on the hill of the tops of active submarine ridges at the water depth of 2600m. The papes also introduces the composition, reserve distribution, abundance of marine minerals and geologic features and genesis of sea floor deposits.

关 键 词：海底 矿物资源 矿床地质学 成因 

分 类 号：P736.3[天文地球—海洋地质]