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Mesozoic Stratigraphy III
Earth Sampler IV: Arizona Petrified Wood
Nebraska Geologic Map
Fossiliferous limestone, orbicular rhyolite, epidote conglomerate, fossiliferous jasper, sodalite syenite, agate, slate; blue chalcedony drusy, fossilized palm wood, fossilized artiodactyls tooth – Merycoidodon culbertsoni, fossilized brachiopod, fossilized shark teeth, gabbro
When Sulfur Ruled
Travertine, orange alabaster, pyritized ammonites, Devonian coral with pyrite, chalcopyrite, dumortierite, pyrite, epidote with copper, banded arsenic jasper, gabbro