[Objective]In order to make up for the information lost in the investigation of modern salt lake deposits,obtain the dynamic crystallization process of halite and guide the study of ancient salt lake deposits.[Methods]With the help of indoor halite evaporation experiment,showing the crystallization characteristics of NaCl during brine evap-oration and the relationship between halite crystallization and sedimentary environment may be analyzed,so as to pro-vide reference for the establishment of salt lake sedimentary model.[Results and Conclusions]It was found that the location of halite deposition is affected by the crystallization habit,and the crystals are deposited above the brine in-terface.Together with the action of the evaporation pump,the formation dynamics are also influenced by air humidity and halite deliquescence.Chevron crystals are generally formed at the base of hopper crystals.When growth space is limited,the laminae grown around different hopper crystal nuclei cross obliquely to form chevron crystals,and the two crystalline fabrics are deposited on the water surface at the same time.Before a salt lake completely dries,it may experience the phenomenon of the salt layer blocking the water surface,and may affect the clastic sediment in the ad-jacent layer.
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