Geology 101
What you should know… Geologic History Earth’s Interior Rock Cycle
Geologic History Precambrian Era Vulcanism 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 Mountains Forming Sedimentary Plains APPALACHIAN MOUNTAINS PACIFIC OCEAN ROCKY MOUNTAINS Igneous Rock ATLANTIC OCEAN INTERIOR PLAINS CANADIAN SHIELD
Earth’s Interior HYDROSPHERE ATMOSPHERE Crust - 8-64 km thick Air ATMOSPHERE Water Crust - 8-64 km thick - cold & fragile - Granite and Basalt Land LITHOSPHERE 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
Rock Cycle MAGMA Heats and melts Cools and hardens IGNEOUS METAMORPHIC Weathers, erodes, and deposits Stresses or heats SEDIMENTARY