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The Xiheli Formation is located in Wutai County. Shanxi Province. It contains grayish purple. purplish red slate, sandy slate and muddy sandstone. It has been dated to the paleoproterozoic period. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Xiheli Formation」の詳細全文を読む スポンサード リンク
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