石膏层 meaning in English

gypsic horizon

Standard specification for accessories for gypsum wallboard and gypsum veneer base
石膏墙板和石膏层板基底用附件的标准规范
The lower part is a micro - tidal range evaporative tidal sequence consisting of thin - bedded gypsum - bearing , muddy - limestone and dolomicrite
下部为薄层的含石膏、硬石膏晶体、团块及肠状石膏层的泥晶灰岩、微晶白云岩组成的小潮差蒸发潮坪层序。
The occurrence of variegated polymictic conglomerate sediment , mud cracks , gypsum strata and so on can provide evidences for aridity climate in western liaoning
两剖面复成分砾岩杂色沉积、泥裂、石膏层等为该区可能存在的干旱气候提供了依据。
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 of the salt sediment group ( the upper part of the lower permian ) which consists mainly of halite and anhydrite
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。