From the ancient sedimentary formations in the north through the overthrust belt in the southeast, Idaho's rocks are as interesting as rocks come. The authors know these rocks well through their years of research in Idaho, which led to their theory explaining the flood basalts of the Columbia Plateau and the hotspot track of the Snake River Plain as the results of a giant meteorite impact that happened about 17 million years ago.
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.
More than one third of New Mexico is public land holding huge amounts of mineralogical treasure. Find unusual mineral displays, fossils, jasper, agate, petrified wood, and more obsidian than one rockhound could collect in a lifetime. The array and quality of material found in New Mexico are almost mind boggling.
The Rockhound's Guide to New Mexico describes 75 of the state's best rockhounding sites, covering the popular and commercial sites as well as numerous little-known areas.
This handy guide describes where and how to collect specimens, includes maps and directions to each site, and provides recommendations for accommodations, camping, and other special attractions. The Rockhound's Guide to New Mexico offers a complete introduction to the many-faceted hobby and is an outstanding guide and sourcebook.
This packet contains 5 maps (17 1/2 X 23) printed on both sides. The maps divide the state into four sections and show the location of 63 gems in addition to gold and silver. The maps featured were chosen due to their clarity. This package is a must for both the serious or the part time rock hound.
Map locates deposits of actinolite, agate, amazonite, amethyst, anthophylite, apatite, arsenopyrite, azurite, barite, beryl, broznite, calcite, cassiterite, cerussite, chert, chalcopyrite, chryscolla, corundum, diopside, enargite, epidote, flourite, fossil, garnet, geodes, hematite, meminorphite, heulandite, heubnerite, jasper, kyanite, limonite, magnetite, malachite, muscovite, olivine, opal, orthoclase, parisite, petrified wood, psilomelane, pyrite, pyrolusite, pyrrhotite, quartz, rhodochrosite, rhyolite, sapphire, selenite, serpentine, scheelite, spinel, staurolite, stibbnite, titanite, topaz, vesuvianite, wulfenite, and zeolite.
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