Plate Tectonics Mountain Building The Worlds Mountain Ranges
Plate Tectonics & Mountain Building
The World’s Mountain Ranges Himalayas Rockies Alps Andes Alpine-Himalayan Belt Circum-Pacific Belt
Plate Tectonics Structure of the Earth
Structure of the Earth § § § Crust Mantle Core Lithosphere = Crust + Upper Mantle Asthenosphere Lower Mantle : convection currents of magma
Plate Tectonics Plates and Plate margins
The World’s major Plates North American Plate Eurasian Plate African Plate Indo-Australian Australia Plate Pacific Plate South American Nazca Plate
Plates movements & Plate margins How do the plates move? Diverging; Converging; lateral movement Plate margins: Diverging/Constructive plate margin Converging/Destructive plate margin Conservative/Passive plate margin
The lithosphere and the asthenosphere Lithosphere Asthenosphere
Constructive Plate Margin : Oceans Oceanic Ridge Magma thrusts up Rifting/faulting Tw o p late s m ove apa rt
Mid-Atlantic Ridge Indian Ridge
Constructive Plate Margin: continent Lava intrusion and extrusion Plate movement Displacement of rock strata under normal faulting
East African Rift Valley System
Oldoiyo Volcano, E. African Rift Valley
Destructive Plate Margin Sea Trench Rising magma n o c e t lates p n r e o i i v t a c e u H Subd o pdladown eze squ. Tew Melting e of crust g r ve
Sea Trenches
Passive Plate Margin San Andrea’s Fault
San Andrea’s Fault
Plate Margins & Ocean Floors
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