| The view is roughly north to the pristine Alpine setting in Copper Basin, where some 42 species of fossil plants occur in tuffaceous, lacustrine (lake-deposited) exposures of the upper Eocene Dead Horse Tuff (38 to 39 million years old). Most rocks within view are Eocene-Oligocene volcanics----except for that prominent peak at upper right, which is the 15.5 million year old Jarbidge Rhyolite. |