Product Description
Purchase includes free access to book updates online and a free trial membership in the publisher’s book club where you can select from more than a million books without charge. Chapters: Gemstone, Boulder, Breccia, Ventifact, Dimension Stone, List of Rock Types, Bugle Rock, Bluestone, Indian Head Rock, Coprolite, Rock, Geode, Anthropic Rock, Pounamu, Phenocryst, Toadstone, Riprap, Pitt’s Head, the Rock, Tafoni, Fault Breccia, Piedras Del Tunjo Archaeological Park, Pulhamite, Verd Antique, Pulpit Rock (The Dalles, Oregon), Bedrock, Hummelstown Brownstone, Jasper Conglomerate, Roque Nublo, Impactite, Fault Gouge, the Stone Mushrooms, Popping Stone, Suiseki, Pierre de Jaumont, Coralline Rock, Weaubleau Egg, Rock Polishing. Excerpt: Anthropic rock is rock that is made, modified and moved by humans. Concrete is the most widely-known example of this . The new category has been proposed to recognise that man-made rocks are likely to last for long periods of Earth’s future geological time , and will be important in humanity’s long-term future.History Anthropogenic lithogenesis is a historically new event-process within the Earth. For millennia humans dug and piled only natural rocks. Archaeologists, during 1998, reported that artificial rock was made in ancient Mesopotamia . British Victorians were very familiar with the durable mock-rock surface formations used in public parks, constructed of Pulhamite and Coade stone . Concrete, as we know it today, dates from 1756. Worldwide, concrete’s preparation adds at least 0.2 gigatonnes yearly to the atmosphere’s CO2 gas stock and, thereby affects Earth’s Greenhouse Effect . In 2007, 7.58 cubic kilometers of concrete are created annually by humans.Classification and theory The USA geologist Dr. James Ross Underwood, Jr., born 1927, has foreseen humanity’s need for a Fourth Class of rocks to be added to Earth and planetary materials studies which would supplement geology ’s long-identified igneous , sedimentary and metamorphic…
Rocks: Gemstone, Boulder, Breccia, Ventifact, Dimension Stone, List of Rock Types, Bugle Rock, Bluestone, Indian Head Rock, Coprolite, Rock
Gemstone Names
Bluestone, boulder, Breccia, Bugle, Coprolite, Dimension, Gemstone, Head, Indian, List, Rock, Rocks, Stone, Types, Ventifact
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