Map identifies locations of: gold and silver, agate, beryl, corundum, epodote, feldspar, garnet, geodes, jasper, nodules, opal, opalized wood, petrified wood, quartz, rhodonite, thunder eggs, topaz, tourmaline, and zeolite.
That's not all that's changed in this reader-friendly new edition: 50 percent of the photographs are new; all the maps have been updated; and seven new road guides lead you on spectacular trips--including Colorado 65, which crosses over the Grand Mesa. Chronic and Williams break Colorado into four digestible geographic regions: the Plains, the Rockies, the Plateaus, and the San Juans. The authors also guide you through several national treasures, including Black Canyon of the Gunnison National Monument, Rocky Mountain National Park, Dinosaur National Monument, Great Sand Dunes National Monument, Mesa Verde National Park, and Florissant Fossil Beds National Monument.
Montana's geologic history includes a long succession of disturbances that changed the rocks, then changed many of them again. Unraveling these events reveals a geologically quiet continent that got scrambled in a long and grinding collision with the Pacific crustal plate. Through detailed geologic maps and lively text, Roadside Geology of Montana deciphers the complicated rock record and uncovers each layer of Big Sky Country.
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