According to data of 49 lake areas, we can summary some respects as follows:1. Lithologic characters are sandy silt and elayely silt. It is similar to Malan Loess in salt-formation stage, but it is silty clay and clay in non-salt formation stage.2. Clay minerals are mainly illite, secondary chlorite, little montmorillonite, ka olinite, trace mixed-layer mineral, and maybe present palygorskite-sepiolite group minerals.3. It is characterized by rich in K2O(15-20)and MgO(5-20)for chemical composition of clay in salt lakes. Generally, chemical compositions are similar to cold-warm zone continent clay in non-salt-formation stage, but to salt-bearing clay in salt-formation stage.4. Clay minerals are generally allothigenous. Some minerals present transformation or alteration in salt-bearing process of salt lake too.5. The data of clay are useful for studing some respects of evolution process of salt lake, for example, it may indicate trend of climate evolution in geological time, and for understanding environment and condition of formation of sediments and so on.
徐昶. 1985, 青藏盐湖沉积物中粘土矿物的初步研究. 地质科学, (1): 87-96.
Xu Chang. PRIMARY STUDY OF CLAY MINERALS AND ITS SIGNIFICANCE IN SALT LAKE SEDIMENTS OF THE QINGHAI-TIBET[J]. Chinese Journal of Geology, 1985, (1): 87-96.