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Peer reviewedShea, James Herbert – Journal of Geological Education, 1989
Discussed are two techniques that can be used to directly test the theory that the plates which make up the crust of the earth are still moving. Described are the use of satellite laser ranging and very long baseline interferometry. Samples of data and their analysis are provided. (CW)
Descriptors: College Science, Earth Science, Geology, Higher Education
Peer reviewedChapman, Clark R.; Morrison, David – Mercury, 1990
Examined is the science of catastrophism and its role in planetary and earth science. The effects of impacts on earth with extraterrestrial origins are discussed. Perspectives on the age and dynamics of the earth's crust are presented. (CW)
Descriptors: Astronomy, College Science, Earth Science, Higher Education
Johnston, Arch C.; Kanter, Lisa R. – Scientific American, 1990
Discussed are some of the reasons for earthquakes which occur in stable crust away from familiar zones at the ends of tectonic plates. Crust stability and the reactivation of old faults are described using examples from India and Australia. (CW)
Descriptors: College Science, Earth Science, Earthquakes, Geology
