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中国北方早、中前寒武纪(包括太古代和早元古代)磷矿主要分布在中国中南地区的东北部,华东地区东部,华北、东北地区和朝鲜北部,即中朝地块范围内(图1)。早、中前寒纪磷矿是产于古老变质岩中的变质矿床,由于矿石可选性较好,有些矿床有可供综合利用的矿物或元素,因此该类磷矿是我国,特别是北方缺磷省区较为重要的磷矿资源。中国北方早、中前寒武纪地层十分发育,研究程度也较高,但在地层的划分对比上尚有分歧。笔者根据全国地层委员会的决议(1982),并综合了近年来一些主要研究成果,将
Early and Middle Precambrian (including Archean and Early Proterozoic) phosphorous in northern China are mainly distributed in the northeast of central and southern China, eastern part of East China, northern part of China, northeastern part and northern part of North Korea, figure 1). Early and Middle Precambrian phosphate rocks are metamorphic deposits produced in ancient metamorphic rocks. Due to the better oreability and some deposits of minerals or elements for comprehensive utilization, this type of phosphate rock is a type of phosphate rock in our country, especially in the north P is more important phosphorite resources in the province. Early and Middle Precambrian strata in northern China are well developed and studied to a large extent, but there are still differences in stratigraphic division and contrast. Based on the resolution of the National Stratigraphy Commission (1982) and combining some of the major research findings in recent years,