【摘要】 <正> 一、概述蒸发岩也称盐岩。各种类型的沉积岩和沉积矿床有其共性,但亦有其各自的特殊性,蒸发岩的特殊性有: 1.缺乏在规模上能与古代蒸发岩(盐类矿床)相比拟的现代蒸发岩沉积区,这就使得在运用现实主义原则上受到了一定限制。2.由于蒸发岩在地表易于风化淋滤,故除干旱地区外,极少见地表露头,这给蒸发岩的研究带来了很大局限性。更多还原

【Abstract】 This paper make an approach to following problems of evaporite origin:1.The possibility of supply from deep brines;2.The existence of mechanical sedimentation in the process of evaporite formation;3.Evaporites accumulate mainly in the environments of shallow salt lakes-playas.4.Organic matter have a striking infeulnce on the origin of evaporites.5.The absent faeies in salt deposits of clastic model is considered as pseu-domorph.6. Sabkha sedimentary environment is supposed to be an important salt-forming model.更多还原