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Black Buttes : ウィキペディア英語版 | Black Buttes
Black Buttes is an extinct volcano in the Cascade Volcanic Arc in Washington, United States. Glacially eroded remnants of this volcano rise above the Deming Glacier, part of the glacier system of Mount Baker. The volcano was last active between 500,000 and 300,000 years ago. Mount Baker, a much younger volcano, sits on top of lava erupted from Black Buttes Volcano. Mount Baker volcano is less than 140,000 years old.〔 ==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「Black Buttes」の詳細全文を読む
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