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Obsidian Ridge : ウィキペディア英語版 | Obsidian Ridge
Obsidian Ridge is a volcanic mountain ridge in northwestern British Columbia, Canada, located on the south side of Artifact Creek at the southeast end of Mount Edziza Provincial Park. It was named on January 2, 1980 by the Geological Survey of Canada for its high quality of obsidian. Because of its high obsidian content, it was a source for tool making by the local Tahltan people. ==See also==
*Volcanism of Canada *Volcanism of Western Canada
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「Obsidian Ridge」の詳細全文を読む
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