Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download plate-tectonics-volcanoes-and-erosion
Document related concepts
no text concepts found
Transcript
Plate Tectonics Geography of Canada www.CraigMarlatt.com/school Planet Earth 1. Plate Tectonics 2. Earth’s Interior 3. Forces of Erosion Plate Tectonics - Continental Drift Pangaea Plate Tectonics - Continental Drift THE CONTINENTS TODAY Plate Tectonics - Continental Drift PROOF! Plate Tectonics Map Plate Tectonics Processes Plate Tectonics Separating Plate Tectonics Separating Plate Tectonics Separating Pacific Ring of Fire Volcanoes and Earthquakes Plate Tectonics Separating Plate Tectonics Colliding Plate Tectonics Colliding Plate Tectonics Sliding Plate Tectonics Sliding Plate Tectonics Sliding • Less than 3.5 • 3.5-5.4 • Under 6.0 • 6.1-6.9 • 7.0-7.9 • 8 or greater Generally not felt, but recorded. Often felt, but rarely causes damage. At most slight damage to well-designed buildings. Can be destructive in areas up to about 100 kilometers across. Major earthquake. Can cause serious damage over larger areas. Great earthquake. Can cause serious damage in areas several hundred kilometers across. Earth’s Interior HYDROSPHERE Crust - 8-64 km thick - cold & fragile - Granite and Basalt Mantle - 1800 km thick - hot & molten - Magnesium and Silicon Outer Core - 2000 km thick - 3 - 4000°C - liquid Nickel and Iron Inner Core - 1400 km thick - 5 - 6000°C - solid Nickel and Iron Air Water ATMOSPHERE Land LITHOSPHERE Geologic History • Precambrian Era Volcanism Fault Ancient Sea Igneous Rock Geologic History • Paleozoic Era Erosion Erosion Sediments Sediments Igneous Rock Geologic History • Mesozoic Era Erosion Sediments Sediments Igneous Rock Mountains Forming Geologic History • Cenozoic Era Sedimentary Mountains Eroding PACIFIC OCEAN Mountains Sedimentary Forming Plains ROCKY MOUNTAINS INTERIOR PLAINS Igneous Rock CANADIAN SHIELD APPALACHIAN MOUNTAINS ATLANTIC OCEAN Rock Cycle MAGMA Heats and melts Cools and hardens IGNEOUS METAMORPHIC Stresses or heats SEDIMENTARY Weathers, erodes, and deposits
