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All Articles for Magazine issue 1981 (Volume 12, No. 2)
Year (Volume & No.)TitleAbstractAuthorDownload
1981 (Volume 12, No. 2)Early Tectonics -- Earth Sciences Special: Before PangeaBefore there wa the Pangean supercontinent there were fragments that became it. And there was something before that, and before that, and be.... Geologic time scale. Continental blocks in motion. Footprints of ancient collisions.Henry SimmonsPDF
1981 (Volume 12, No. 2)Ecological Impact -- Earth Sciences Special: Mount St. Helens: The Ecology of a HolocaustThe Mount St. Helens eruption became a research opportunity of unprecedented magnitude--a chance to see the recovery of a biological community. With the `pulse` at Mount St. HelensJohn DouglasPDF
1981 (Volume 12, No. 2)Explosive Volcanism -- Earth Sciences Special: Vulcan's Chimneys: Subduction-zone VolcanismThe ancient Romans believed that volcanoes were the chimneys of the subterranean forge of Vulcan, blacksmith of the gods. They are also windows to the tectonic subductions that principally spawn them. Volcanoes and volcanoes. Prediction and warning.Henry LansfordPDF
1981 (Volume 12, No. 2)Extinctions -- Earth Sciences Special: The World's Great DyingsSome subtle geochemistry has identified a bona fide interplanetary catastrophe with the mass biological extinctions on earth 65 million years ago. The nature of the biological event is still controversial. Just so.Arthur FisherPDF
1981 (Volume 12, No. 2)Mantle Chemistry -- Earth Sciences Special: Mantle Geochemistry: More Than One RiddleThe nature and evolution of the earth's mantle are revealing themselves to isotope chemists. But there is still considerable uncertainty.Blanchard HiattPDF
1981 (Volume 12, No. 2)Ocean Margins -- Earth Sciences Special: Ocean Margins, the Scars of CreationEarth scientists are going where the action is--or was: to the places where continents were ripped apart or where the earth's plates meet.John LudwigsonPDF
1981 (Volume 12, No. 2)Planetology -- Earth Sciences Special: The Terrestrial PlanetsThe solar system's inner, terrestrial planets are not all at the same evolutionary stage. Studies of each casts light on where the others have been-or are going. A solar system model.Mort LaBrecquePDF


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