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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Beaver River sandstone ： ウィキペディア英語版 Beaver River sandstone Beaver River sandstone is a rock material locally found in northern Alberta, Canada, that was extensively used by First Nations people in prehistoric times to make tools with a sharp edge.〔(Elders' Voices website )〕 Many projectile points and other tools made from the Beaver River sandstone have been found at archaeological sites in the Oil Sands region of Alberta. The source of this material has been identified as a site on the east side of the Muskeg River where native peoples quarried rock for use in making tools.〔Graham Chandler, (Ancestry of the Land Before Time ), Americas journal, (September-October 2007 )〕 ==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「Beaver River sandstone」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.