而且，科学家们发现这些石膏具有独特的成分和结构，这表明它们曾经形成于沙漠的低洼地带。
Furthermore, the gypsum was found to possess peculiarities of composition and structure that suggested it had formed on desert flats.
波鲁普峡湾泉水中的氢化硫转化为稳定的沉积物。或为单质硫——这是沉积物中最普通的成分，或为石膏。
At the Borup Pass spring, hydrogen sulfide gas in the water is converted to stable deposits of either elemental sulfur, the most common material in the deposit, or gypsum.
极高的蒸发率使厚实的盐矿逐渐沉积，包括食用盐和石膏层(一种白垩矿，是墙板壁的主要成分)。
High rates of evaporation deposit thick layers of salt minerals, such as common table salt and gypsum (a chalky mineral that is a major component of wallboard).
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