Colorado Rocks!: A Guide to Geologic Sites in the Centennial State PB_Gift_Guide the book explains why it

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Colorado Rocks!: A Guide to Geologic Sites in the Centennial State PB_Gift_Guide the book explains why itThese 50 well chosen sitesmany on every geologist's bucket listspan 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