Copper Basin, Nevada

The view is northwest across scenic Copper Basin. Note the prominent outcrops of whitish tuffs of the upper Eocene Dead Horse Tuff lying below the more massive reddish-brown middle Miocene Jarbidge Rhyolite, dated by radiometric methods to 15.5 million years old. Local concentrations of beautifully preserved, carbonized 38 to 39-million-year-old leaf impressions occur within minor tuffaceous shale accumulations interbedded in the predominantly volcanic terrain.

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