摘要
柴达木盆地中部的一里坪和东、西台吉乃尔湖,即三湖,在晚更新世晚期以前,与察尔汗同为一统一的淡水滨浅湖。此后发生强烈的新构造运动,导至湖水四次收缩,三湖与察尔汗湖逐渐分离,那棱格勒河水系产生四期冲积扇,三湖形成相应的扇前湖。从距今约15000年开始,三湖演变成盐湖,沉积了上、下盐层,其晶间卤水及湖表卤水富含锂和硼,储量巨大。盐类物质主要来自那棱格勒河上游昆南断裂两侧与新生代火山活动有关的温泉热水的补给。
The Yiliping Lake and the East and West Taijnar Lakes, i. e. Three lakes, in the central part of the Qaidam basin had been connected with Qarhan to form a unified freshwater shoreline shallow lake before the late part of the late Pleistocene. Afterwards strong neotectonic movements took place; as a result, the lake shrank four times and the Three Lakes were gradually separated from Qarhan. Meanwhile, alluvial fans of four periods originated in the Nalinggale River system and the Three Lakes became a forefan lake. From about 15000 yr B. P. on, the Three Lakes evolved into saline lakes, where the upper and lower salt beds were deposited. The intercrystal brines of the beds and surface brines of the lakes are rich in Li and B. Their reserves are large, The salt materials were mainly derived from both sides of the Kunnan fault in the upper reaches of the Nalinggela River and supplied by the hot springs related to Cenozoic volcanism.
出处
《地质论评》
CAS
CSCD
北大核心
1989年第6期558-565,共8页
Geological Review
