Slide 1

III. Plate Boundaries A. Transform B. Divergent C. Convergent Slide 2 III.Plate Boundaries A. Transform Two plates slide past each other and transform surface features Two plates slide past each other and transform surface features ex. San Andreas Fault ex. San Andreas Fault Slide 3 Slide 4 Slide 5 Slide 6 Slide 7 III.Plate Boundaries B. Divergent Two plates move away from each other Two plates move away from each other As they separate, magma rises to fill the gap As they separate, magma rises to fill the gap Slide 8 III.Plate Boundaries B. Divergent Features: Features: Midoceanic ridge Midoceanic ridge Rift valley Rift valley Seafloor spreading Seafloor spreading Surtsey Island Surtsey Island Icelands Hot Springs Icelands Hot Springs Slide 9 midoceanic ridge, sea floor spreading, rift valley Slide 10 The Great Rift Valley in Eastern Africa Slide 11 Surtsey Island, near Icelandborn in 1963 Slide 12 Slide 13 Now it has life... Slide 14 Hot Springs in Iceland.Blue Lagoon Slide 15 Slide 16 Slide 17 III.Plate Boundaries C. Convergent Two plates approach each other Two plates approach each other 1. Continental Continental formed Himalayas Slide 18 Slide 19 Slide 20 III.Plate Boundaries C. Convergent 2. Continental Oceanic aka subduction zone oceanic crust dives below continental crust Trenches Trenches Mountains Mountains Volcanoes Volcanoes Slide 21 Slide 22 III.Plate Boundaries C. Convergent 3. Oceanic Oceanic trenches (Marianis and Challenger Deep) trenches (Marianis and Challenger Deep) Undersea Volcanoes, aka seamount Undersea Volcanoes, aka seamount Island Arcs Island Arcs Slide 23 Slide 24 Slide 25 Slide 26 Slide 27 Undersea Volcanoes can form islands over many years of eruption Undersea Volcanoes can form islands over many years of eruption Mauna Loa and Kilauea are volcanoes on the island of Hawaii. They were once seamounts. Loihi is an undersea volcano off the southern coast of Hawaiisomeday it will be an island Slide 28 Hawaii was formed as a series of volcanoes