Page 61 - Ultimate Visual Dictionary (DK)
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                                                                                       THE EAR TH S CRUST

                        MAJOR PLATES OF THE EARTH’S CRUST     Hellenic plate   Eurasian plate
           North American
                   plate

                                                                                            Pacific plate
             Plates sliding
                past each
                   other

                                                                                            Philippine plate
              Cocos plate


           Caribbean plate
                                                                                            Plates converging
              Nazca plate





                              South American plate          African plate      Indo-Australian plate

                                       Plates moving apart
                                                               MOVEMENT OF LAND ALONG OCEANIC RIDGES
                                                                                          Land moves apart
                                                                                          at a constant rate,
                                                                                            perpendicular
                                                                                                to ridge

                                          Boundary along
                                          which two plates
                                          slide past each
                                          other

                                               Mountain range
                                               uplifted where subducting     STRAIGHT OCEANIC RIDGE
                                               oceanic crust compresses
                                               and deforms edge of                       Land moves apart
                                               continental crust                          at a constant rate,
                                                                                            perpendicular
                                                                                                to curve






                                                                             CURVED OCEANIC RIDGE
                                                                                         Staggered parallel
                                                                                          ridge sections take
                                                                                            shape of  curve
                                                                                               Transform
                                                         Lithosphere                               fault
                                                         (crust and
                                                         topmost layer
                                                         of  mantle)

                                                 Asthenosphere
                                                 (upper part
                                                                             STRESSES RESOLVE INTO SECTIONS
                                                 of mantle)
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