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Convection Currents and HOT SPOTS

Convection Currents and HOT SPOTS. Driving force behind plate tectonics. CONVECTION CURRENTS IN MANTLE Hot magma rises (less dense), cool magma sinks (more dense) Cool sinks

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Convection Currents and HOT SPOTS

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  1. Convection Currents and HOT SPOTS

  2. Driving force behind plate tectonics • CONVECTION CURRENTS IN MANTLE • Hot magma rises (less dense), cool magma sinks (more dense) • Cool sinks • (more • dense)

  3. http://www.youtube.com/watch?v=ryrXAGY1dmE&feature=related

  4. Problems with Theory • HOT SPOTS • Not associated with plate boundaries • Plates move over areas of rising magma (Mantle thermal plumes) • Can infer direction of plate movement • Older volcanoes the farther you are from hot spot

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