Plate Tectonics

Description

Leaving Cert Geography (Physical Geography) Mind Map on Plate Tectonics, created by Tom Cahill on 27/10/2013.
Tom Cahill
Mind Map by Tom Cahill, updated more than 1 year ago
Tom Cahill
Created by Tom Cahill over 10 years ago
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Resource summary

Plate Tectonics
  1. lithosphere consists of large, rigid sections called plates
    1. Convection Currents
      1. Continental Drift
        1. Alfred Wegner
          1. rocks in N. America same as those in Irl. and Scot.
            1. Pangaea
          2. Convergent
            1. 2 plates collide
              1. heavier plate is subducted
              2. 2 Oceanic Plates
                1. long deep trench formed
                2. Oceanic Continental
                  1. uplift - fold mountains
                    1. Andres fold mts.
                3. Divergent
                  1. 2 plates separate
                    1. magma rises
                      1. cools on crust
                      2. Mid-Ocean ridge
                        1. Volcanic Island
                        2. Eurasian and N. American
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