Cretaceous Click the image to see the original photo at maximum resolution (potentially large files). Click the title to see a full description, geolocation, and more. Photos 1 - 6 of 6 azgs_photo Lavender Pit, Bisbee, Arizona azgs_photo Spence Titley talking supergene enrichment, Silver Bell Mine azgs_photo The mystery of the sickle-claw dinosaur azgs_photo Gray Mountain to Black Mesa: Geologic tour through Arizona's Dinosaur Country azgs_photo Silver Bell Mountain Copper Mine Complex, southern Arizona azgs_photo Strata of Yale Point, Black Mesa, Navajo Nation
