Chapters cover fossil plants, invertebrates, fishes, amphibians, reptiles, birds, and mammals, plus prehistoric epochs and time periods, fossil hunting and collecting, and important museum collections.
Explains how to start and organize a rock collection; provides detailed descriptions of hundreds of minerals with information on geographic distribution, physical properties, chemical composition, and crystalline structures; and includes 385 color photographs.
Guide to the identification and use of gemstones. Includes the geology, chemistry and properties of gemstones, what to look for when buying and how to care for them, plus information on the diamond industry.
More than 1,500 full-color photos showcase each precious and semiprecious stone in all its singular glory--in both its rough natural state and its polished and cut renditions. Each entry offers complete information on a gemstone's formation and structure, physical properties and characteristics, methods of working, cutting, and polishing. Learn about the best known, including amethyst and diamond. Find full treatments of lesser-known gems, from andalusite to vesuvian. A special section is devoted to rocks as precious stones, including alabaster, onyx, obsidian, and fossils. Organic gem materials are also covered, such as coral, ivory, amber, and pearl, plus new on the market stones like charcoite. Everything is covered, including imitations, synthetics, and combined stones. Charts and tables help you identify unknown gemstones and, when you're in the market, how to check for genuineness.
Earth rules and is ruled in this Oxford encyclopedic companion. The companion claims to be for a wide readership, but even with its shorter sentences, the volume better serves those somewhat knowledgeable in these sciences. This typical example from the entry "subduction zones" illustrates the point: "Subduction zones form where an oceanic lithospheric plate is in collision with another plate, either oceanic or continental. The density of oceanic lithosphere is similar to that of the asthenosphere, and it can thus fairly easily be pushed down into the uppermost mantle." B&w drawings, graphs, and photos accompany 900 entries, many cross-referenced with suggestions for further reading. Featured are thematic lists grouping individual entries, themes such as atmosphere and meteorology, climate, geomorphology, geochemistry, geographic time and stratigraphy, marine geology, and sedimentology. Annotation c. Book News, Inc., Portland, OR
Jointly authored by four scientists in Italy and designed for the popular reader, this primer is beautifully illustrated with color photos. The basic science of volcanoes is described in initial chapters on magma, eruptions, structures, monitoring, and the volcanologist. The remainder of the book surveys individual volcanoes and their history worldwide. Annotation (c)2003 Book News, Inc., Portland, OR