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序言 根据拉布拉多省豪厄尔斯河地区未变质的索科曼铁建造(Klein,1974;等)和安大略省冈弗林特铁建造未变质部分的矿物组合和化学成分的详细定量数据,可以推断元古代铁建造的某些沉积和成岩条件(Floran和Papike,1975)。弗伦奇(1968)对明尼苏达州比瓦比克铁建造未变质部分的矿物集合体的研究,詹姆斯(1954,1955)对苏必利尔湖区各种铁建造的矿物集合体的研究,特伦德尔和布洛克里(1970)对澳大利
Preamble Detailed quantitative data on the mineral assemblages and chemical composition of the unmetamorphic parts are based on the unmodified Sokolmna iron construction (Klein, 1974; et al.) In the Howell River area of the Labrador province and the Okanlitan Iron, Ontario , Some of the sedimentary and diagenetic conditions for Proterozoic iron construction can be inferred (Floran and Papike, 1975). The study by French (1968) of a mineral assemblage of unmodified parts of the iron in the Biwabique, Minnesota, James (1954, 1955) a study of mineral assemblages of various iron in Lake Superior Lakes, Trentl and Cloth Lockley (1970) to Australia