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- 要約等Rb－Sr age determination is undertaken on minerals and whole rock samples of crystalline rocks collected from......ral localities in the Precambrian Platform of North China. Results are 1......biotite microcline gneiss, 1430 ......ite. Three distinct epochs of metamorphism w......ous activities of every 500 m.y. may be distinguished in the Precambrian history of the North Chinese Platform by compilation of previous age d......th the results of this paper.
- 件名Industrial and Manufacturing Engineering Environmental Engineering
- 出版者（掲載誌）Faculty of Science, Kyushu University
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