The depocenter of paleolake has undergone a series of migration due to the variation of regional tectonic activities since the Tertiary, and a series of evaporite sequences have been formed in different regions during the processes (There may be different regional fluid, Including meteoric water, river water, groundwater, etc. mixing with the original paleolake water in each region ). So the question is, How to establish the inheritance relationship among different regions in the process of migration and evaporation of paleolake water bodies? What kinds of indicators could used for tracing the evolution process of water body in paleolake?