seafloor spreading Theory that oceanic crust forms along submarine mountain zones, known collectively as the oceanic ridge system, and spreads out Abundant evidence supports the major contentions of the seafloor-spreading theory. First, samples of the See J. Coulomb, Sea Floor Spreading and Continental Drift (1972)
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www.answers.com/topic/seafloor-spreading
www.answers.com/topic/seafloor-spreading
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In particular, four major scientific developments spurred the formulation of the plate-tectonics theory: (1) demonstration of the ruggedness and youth of the ocean floor; Dietz and Hess were among the small handful who really understood the broad implications of sea floor spreading. If the Earth's crust was expanding...
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pubs.usgs.gov/publications/text/developing.html
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Hutchinson encyclopedia article about Seafloor Spreading Theory. Seafloor Spreading Theory. Information about Seafloor Spreading Theory in the Hutchinson encyclopedia. (redirected from Seafloor Spreading Theory)
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encyclopedia.farlex.com/Seafloor+Spreading+Theory
encyclopedia.farlex.com/Seafloor+Spreading+Theory
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DESCRIPTION: "Ring of Fire", Plate Tectonics, Sea-Floor Spreading, Subduction Zones, "Hot Spots" More than half of the world's active volcanoes above sea level encircle the Pacific Ocean to form the circum-Pacific "Ring of Fire." In the past 25 years, scientists have developed a theory -- called plate tectonics --
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vulcan.wr.usgs.gov/Glossary/PlateTectonics/description_...
vulcan.wr.usgs.gov/Glossary/PlateTectonics/description_plate_tectonics.html
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seafloor spreading, theory of lithospheric evolution that holds that the ocean floors are spreading outward from vast underwater ridges.
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encyclopedia2.thefreedictionary.com/Seafloor+Spreading+...
encyclopedia2.thefreedictionary.com/Seafloor+Spreading+Theory
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In this module students examine data from sediments on the ocean floor, determine whether the data support the theory of sea-floor spreading, and calculate the rate of spreading of the East Pacific Rise. Other CEEP modules related to the ocean floor include: "Lithospheric Plates and Ocean Basin Topography";
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www.ucmp.berkeley.edu/fosrec/Metzger3.html
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Even though the theory of continental drift was proposed in 1912 by Alfred Wegener, the idea of moving continents wasn't generally accepted until the early 1960s. That's when Wegener's theory was resurrected by Harry Hess, Robert Dietz, Fred Vine, and Drummond Matthews. Hess proposes sea-floor spreading...
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www.pbs.org/wgbh/aso/tryit/tectonics/
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It confirmed sea-floor spreading as hypothesized by Hess, and thus "continental drift," originally proposed by Alfred Wegener back in 1912. It convinced many that plate tectonics was the best theory to unify nearly all the previously accumulated, but disjoint geological data.
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www.pbs.org/wgbh/aso/databank/entries/do63ma.html
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Existing Theory of Continental Drift; The volume of the total earth is 1,083,230,000,000 cubic km. The area of the continental shelves is 28,400,000 sq km. Total continental area is therefore about 538,466,000 sq km. The rate of sea floor spreading at the mid oceanic ridges varies from 1 to 9 cm per year.
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www3.bc.sympatico.ca/Moon/continent.html
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