贵州沉积磷矿主要形成于震旦纪陡山沱期和寒武纪梅树村期。其中陡山沱期磷矿主要分布在瓮福、开阳、息烽、遵义松林等地区。目前,关于贵州陡山沱期磷矿的成矿作用在古地理环境、物质来源、成矿机制及成矿模式等方面具有如下特点:1成矿古地理南沱冰期后,扬子地台开始了大规模的海侵,贵州古地理格局总体自北西向南东由浅变深,即大 Guizhou sedimentary phosphate was mainly formed during the Sinian Doushantuo period and Cambrian Meishu period. Among them, the Doushantuo period phosphate rock is mainly distributed in Wengfu, Kaiyang, Xifeng and Zunyi pine forests. At present, the mineralization of phosphate rock in Doushantuo Period, Guizhou Province has the following characteristics in terms of palaeogeomorphology, source of materials, metallogenic mechanism and metallogenic model: After the Nantuo ice age of the ancient mineralization in the Yangtze River, the Yangtze platform started Large-scale transgression, Guizhou ancient geography pattern from the northwest to the east from the shallow to deep, that is large