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从岩相古地理、沉积建造和成膏物质来源可以看出,长江中下游地区三迭系石膏矿床属浅海相蒸发沉积矿床.这种矿床时空分布规律明显,强烈受构造控制.在时间上本区石膏矿床主要分布于早三迭世晚期和中三迭世早期,共有七个成膏区.自东向西成膏区增多,成膏区变新.在空间上,石膏矿床往往分布范围广,厚度大,多为大型矿床,如南京硬石膏矿床和黄石硬石膏矿床.在大区域内其分布有局限性,不是到处都有矿,最有利的部位是泻
Based on the lithofacies palaeogeography, sedimentary structure and source materials, the Triassic gypsum deposit in the middle and lower reaches of the Yangtze River belongs to the shallow-marine evaporite deposit, which has obvious temporal and spatial distribution and is strongly controlled by tectonics. Gypsum deposits are mainly distributed in the late Early Triassic and early Middle Triassic, with a total of seven areas into a cream area, increasing from east to west into a cream area, into a new cream area. In space, gypsum deposits are often distributed in a wide range, Thick, mostly large deposits, such as Nanjing hard gypsum deposits and yellowstone anhydrite deposits in the large area of its distribution has limitations, not everywhere have mine, the most favorable site is diarrhea