Animated illustrations of earth plate tectonics and of cores drilled by the Glomar Challenger from deep ocean floors.
United States USA Date:1974 Duration:2 min 48 sec Sound:NO SOUND
Animated illustration of earth's crust and plate tectonics. it shows drift from the consolidated "Pangea" continent into the separate continents of the present and the way they would fit back together again. Pressure ridges in the ocean floor is shown between the American and African continents. Animation shows the Glomar Challenger towing instrumentation and mapping the details of the deep ocean floor. Illustration shows distortion of earth's magnetic field and potential for change in magnetic poles. Shown are illustrated cores bored, by the Glomar Challenger, from the deep ocean floor to gain information about the changes occuring over millions of years.
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