Colorado Rocks!: A Guide to Geologic Sites in the Centennial State

These 50 well-chosen sites—many on every geologist's bucket list—span Colorado's geologic history from 1.7-billion-year-old rocks of the Black Canyon to the constantly shifting landscape of the Great Sand Dunes. The asteroid-produced iridium-enriched layer that marks the end of the dinosaurs is here, as are insects and petrified wood exquisitely preserved at Florissant Fossil Beds, the pure white marble used in the Lincoln Memorial, mysterious Unaweep Canyon that lacks a river, and colorful...