aa lava

aa lava

[ä′ä ′lä·və]
(geology)
block lava
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Specific topics include strike-slip fault, terminal moraine, tsunami, weathering, Yellowstone National Park, mass wasting, Kaapvaal craton, ichnofossils, greenstone belts, geodesy, El Nino, desalination, carbon cycle, and aa lava. Five appendixes contain the periodic table of elements, the geologic time scale, classification of species, solar system data, and evolution of life and the atmosphere.
Encyclopedia of Earth Science

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