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20 Cards in this Set
- Front
- Back
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layers of the Earth |
crust mantle outer core inner core |
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plate divergence |
starts as a rift valley, continues to become an ocean (pulling apart) ex.Iceland |
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plate convergence 1 (plate collision) |
2 continental plates colliding, creates fold mountains ex.Appalachians |
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plate convergence 2 |
subduction zone,continental and oceanic crust collide ex.British Columbia West Coast |
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transform faults |
plates sliding past each other, causes earthquakes ex.San Adreas faultline |
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igeneous |
-granite -basalt -obsidian -pumice |
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sedimentary |
-sandstone -limestone -shale -comglomerate |
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metamorphic |
-gneiss -slate -marble -quartize |
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Cenozoic |
Started/Ended: 66 MYA to now Major Geological Events: -ice sheets cover much of North America -continents take present shape -completion of Rocky Mountains
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Mesozoic |
Started/Ended: 245 MYA to 66 MYA Major Geological Events: -formation of Rocky Mountains begins -Innuitian mountains formed -shallow seas in the interior of North America at various times
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Paleozoic |
Started/Ended: 570 MYA to 245 MYA Major Geological Events: -periods when large parts of North America were covered by shallow seas -Appalachians formed
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Precambrian |
Started/Ended: 4600 MYA to 570 MYA Major Geological Events: -precambrian shields (i.e Canadian Shield, Brazilian Shield, African Shield and Australian Shield are formed)
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Cenozoic 2 |
Started/Ended: 66 MYA to now Major Biological Events: -humans develop -age of mammals -modern life evolves |
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Mesozoic 2 |
Started/Ended: 245 MYA to 66 MYA Major Biological Events: -age of reptiles (ex.dinos) -first flowering plants -first birds and mammals
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Paleozoic 2 |
Started/Ended: 570 MYA to 245 MYA Major Biological Events -age of amphibians and fish -first insects -large swamps (coal formation) -first plants and animals appear on land |
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Precambrian 2 |
Started/Ended: 4600 MYA to 570 MYA Major Biological Events -first multi-celled organisms -first single-celled organisms
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From magma to igneous |
cools and hardens |
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From igneous to sedimentary |
weathers,erodes and deposits |
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From sedimentary to metamorphic |
stresses or heats |
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From metamorphic to magma |
heats and melts |
