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Bishop Tuff
The Bishop Tuff is a welded tuff that formed 767,100 ± 900 years ago as a rhyolitic pyroclastic flow during the eruption that created the Long Valley Caldera. Large outcrops of the tuff are located in Inyo and Mono Counties, California, United States. ==Modern exposure==
The Bishop Tuff caps a volcanic plateau in the northern Owens Valley. The tableland formation is located east of U.S. Route 395 and west of the Nevada stateline, sitting northwest of Bishop and southeast of Crowley Lake and Mammoth Lakes. Another part of the flow is south of Mono Lake, and surrounding the Mono-Inyo Craters. Deposits of Bishop Tuff in this area cover nearly , and range in thickness from to . The Owens River cut through the volcanic plateau, creating the Owens River Gorge.
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「Bishop Tuff」の詳細全文を読む
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