Relationships between deep ocean floor core samples, tectonic plate movements, and propensity for earthquakes
Pacific Ocean Date:1974 Duration:3 min 29 sec Sound:NO SOUND
Animated sequences illustrating relationship of core samples from deep ocean floor to tectonic plate movements. Diagram showing core samples at various locations and relationship to time, going back to the super continent (Pangea). Outline of Pangea segments superimposed on current world map. Highlighting of areas where tectonic plates collide. Illustration of one plate sliding beneath and adjacent plate; two plates sliding beside one another; and upwelling causing two plates to retreat from each other. Relief map of ocean floor in Pacific showing dramatic features near Japan and lesser features off the coast of California and Mexico related to earthquake propensity.
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