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White, Robert S.; McKenzie, Dan P. – Scientific American, 1989
Investigates the nature of catastrophic volcanism and the rifting process. Describes two kinds of evidence: quantitative descriptions of rock melting and a wide range of observations. Discusses examples of continent growth in the North Atlantic, India and the Seychelles islands, and the South Atlantic. (YP)
Descriptors: Earth Science, Geographic Regions, Geology, Geophysics
Jordan, Thomas H.; Minster, J. Bernard – Scientific American, 1988
Suggests that there is a close relationship between deformation in the western United States and the large-scale motions of tectonic plates. Introduces very-long-baseline interferometry (VLBI) as one of the space-geodetic techniques, vector addition of the VLBI data and geological data, and a new geodetic network. (YP)
Descriptors: College Science, Earth Science, Geology, Geometric Constructions