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.
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.
Height 9.5 Width 6.4
This map packet includes five maps printed on both sides. Maps one through four features gold, silver and gem deposits. The fifth map, side one, shows gold occurrances taken from an 1871 map. Side 2 is a page outlining the history of Oregon's mining operations and how to find and mark your own gold deposits. Every map tells the greatest story! Reported and known occurrences of gold and silver, as well as the popular gem deposits are identified in red. Many secrets of prospecting and mining are revealed in this collection! This publication is attractively packaged for display.
Map identifies locations of: gold and silver, agate, apache tears, bloodstone, carnelian, chalcedony, feldspar, fossils, garnet, geodes, jasper, limb casts, nodules, obsidian, opal, petrified wood, quartz, rhondonite, rhyolite, sagenite, serpentine, sunstones, thunder eggs, tourmaline, jade
From glittering gemstones to fascinating minerals and fossils, Rock and Gem is an incredible celebration of the Earth's buried treasures. Including specially commissioned photographs of more than 450 illustrious specimens and information-rich text, this book illustrates each stone's unique characteristics and its relationship to humankind through the ages.
A remarkable study of the Earth's rocks, minerals, gems, and fossils, this stunning volume reveals the breath and wonder of these outstanding natural phenomena and the fascinating ways they have been prized and used.
Striking visual profiles present the entire range of rocks and minerals, with key information for accurate identification, and practical advice on how to cut, polish, and display objects, as well as an intriguing look at the many ways they have been used, from basic building blocks to fine decoration.(Softcover | | 360 pages | ISBN 9780756633424 | 2005,2008)
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