柴达木盆地大柴旦盐湖硼矿特征及成因研究

The Characteristics and Genesis of Boron Deposits in Da Qaidam Salt Lake， Qaidam Basin

中文关键词:  卤水特征，卤水成因，液体硼矿，大柴旦盐湖

英文关键词:Brine characteristics,Origin of brine,Liquid Boron ore,DaChaidan Salt L

中文摘要:

      柴达木盆地是我国著名的卤水富集区，其中青海大柴旦盐湖为富硼、锂、钾、镁、钠，溴、碘等的高矿化度卤水。为了大柴旦盐湖充分开发应用提供重要依据，本次通过研究大柴旦地质背景、卤水储层地质特征，对大柴旦湖水（地表卤水）、潜卤水、承压卤水水文地质特征、水化学特征进行分析后认为，大柴旦地区硼、锂来源于地球深部，断裂构造为导卤构造，钾、钠、镁等盐类来源于周缘花岗岩，新构造运动形成大柴旦断陷盆地接受沉积，干旱的气候条件下沉积盐类地层，地下水补给增加，岩盐层溶解，形成高矿化度卤水，相应的硼、钾、锂等溶解于卤水之中，形成卤水（液体硼矿）。

英文摘要:

      Qaidam Basin is a famous borate sedimentary area in China，among which the in Qinghai Dachaidan lake boron deposit is a large-scale deposit mainly composed of solid boron ore and coexisting solid and liquid. The characteristics and genesis analysis of the boron deposit provide an important basis for the establishment of metallogenic model, the evaluation of mineral resources and the development. This paper is based on the previous work. By collecting previous data, this paper studies the geological background, ore body geological characteristics, and then analyzes the genesis of the deposit in this area. Through this study, we can further understand the geological background and ore body geological characteristics of the Dachaidan boron mine, and further analyze the deposit characteristics and genesis of the salt lake sedimentary boron mine and boron bearing brine.