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lithosphere
(Encyclopedia) lithospherelithospherelĭthˈəsfērˌ [key], brittle uppermost shell of the earth, broken into a number of tectonic plates. The lithosphere consists of the heavy oceanic and lighter…batholith
(Encyclopedia) batholith, enormous mass of intrusive igneous rock, that is, rock made of once-molten material that has solidified below the earth's surface (see rock). Batholiths usually are granitic…asthenosphere
(Encyclopedia) asthenosphereasthenosphereăsthēnˈəsfēr [key], region in the upper mantle of the earth's interior, characterized by low-density, semiplastic (or partially molten) rock material…subduction zone
(Encyclopedia) subduction zone, large-scaled narrow region in the earth's crust where, according to plate tectonics, masses of the spreading oceanic lithosphere bend downward into the earth along the…Ballard, Robert Duane
(Encyclopedia) Ballard, Robert DuaneBallard, Robert Duanebălˈərd [key], 1942–, American marine geologist, b. Wichita, Kans.; Ph.D. Univ. of Rhode Island, 1974. From 1969 to 1997 he was associated…Homework Helper Fun Facts: Geography
Geography Countries of the World U.S. States U.S. Cities World Geography The Continents World Land Areas and Elevations Continental Drift and Plate-Tectonics Theory Volcanoes of…Earth Science: Projects, definitions and topics
Cite Encyclopedia: Earth Sciences Science…Earthquakes Primer
About 8,000 mini-quakes a day, and on average, one exceptionally big one per year by Borgna Brunner Earthquakes in residential areas, such as this 1964 one in Seward, Alaska, can…Origin of Life: Early Earth Environment
Early Earth EnvironmentOrigin of LifeIntroductionSpontaneous GenerationEarly Earth Environment So if Pasteur is correct and life only comes from existing life, where and how did life begin? Many…World Geography
Find information about the continents, explorers, oceans, seas, rivers, mountains, elevation, geographic extremes, earthquakes, volcanoes, and more. Mount Everest Quiz New! Geography…Trending
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