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Allmon, Warren Douglas – Journal of Geological Education, 1987
Discusses some parallels that seem to exist between mass extinction recognizable in the geologic record and the impending extinction of a significant proportion of the earth's species due largely to tropical deforestation. Describes some recent theories of causal factors and periodicities in mass extinction. (Author/TW)
Descriptors: College Science, Ecological Factors, Ecology, Endangered Species
Peer reviewed Peer reviewed
Scully, Erik Paul – Journal of Geological Education, 1987
Describes some of the contributions made by the field of paleontology to theories in geology and biology. Suggests that the two best examples of modern evolutionary paleontology relate to the theory of punctuated equilibria, and the possibility that mass extinctions may be cyclic. (TW)
Descriptors: Biology, College Science, Controversial Issues (Course Content), Evolution
Peer reviewed Peer reviewed
Ferree, Rob A.; And Others – Journal of Geological Education, 1988
Describes a deterministic computer model that incorporates: (1) initial framework composition; (2) abrasion factors for quartz, feldspar, and rock fragments; and (3) a fragmentation ratio for rock fragments to simulate the recycling of coastal sands by rivers and beaches. (TW)
Descriptors: College Science, Computer Assisted Instruction, Computer Simulation, Computer Uses in Education