中安第斯地区蒸发岩矿床成矿作用特征及构造背景  

Metallogenic characteristics and tectonic setting of evaporite deposits in Central Andes

作　　者：周洁[1] 姚仲友[1] 赵晓丹[1] ZHOU Jie;YAO Zhongyou;ZHAO Xiaodan(Nanjing Center,China Geological Survey,Nanjing 210016, Jiangsu, China)

机构地区：[1]中国地质调查局南京地质调查中心,江苏南京210016

出　　处：《地质通报》2017年第12期2208-2212,共5页Geological Bulletin of China

基　　金：中国地质调查局项目<海上丝绸之路大洋洲和南美洲矿产资源潜力评价>(编号:DD20160110)

摘　　要：在中安第斯高原,包括玻利维亚西部、智利东部、阿根廷北部分布众多的盐湖,湖中含丰富的B、K、Li、Mg和其他蒸发盐类物质,封闭的盆地因蒸发作用使残留盐水中的成矿元素聚集并沉淀。这些矿床的形成与安第斯山的隆起和气侯变化关系密切。通过对该区蒸发岩型矿床的分布特征及成矿特征进行研究,讨论其形成的构造背景,分析成矿要素和找矿方向。Several salt lakes are distributed in central Andean plateau which includes western Bolivian,eastern Chile,and northern Argentina.These lakes are rich in B,K,Li,Mg and other evaporites.Ore-forming elements experienced accumulation and precipitation after evaporation in the closed basin.The formation of these deposits was closely related to the uplift of Andean and climate change.In this paper,through the research on the distribution characteristics and metallogenic characteristics of the evaporate deposits,the authors discussed the tectonic background,analyzed metallogenic elements and proposed the prospecting direction.

关 键 词：构造背景 成矿特征 蒸发岩 中安第斯 

分 类 号：P611[天文地球—矿床学]