以下为句子列表：
英文: In middle and late periods of the Early Permian, the Pre-Caspian areas rose successively, the climate became dry, and the environment turned to be supratidal zone (evaporitic environment), resulting in the spread sedimentation of salts and the formation o
中文: 早二叠世中－后期由于持续构造抬升，盆地气候变得乾旱，海水变浅，潮上带蒸发环境发育，以致这一时期广泛发育盐类沉积，形成含盐层系，主要由盐岩和硬石膏层构成，并形成许多大小不等的盐丘构造。
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