chapter 4
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Chapter 4. Georgia’s Features. Regions of Georgia. Appalachian Plateau Valley and Ridge region Blue Ridge region Piedmont region Coastal Plain http://georgiamagazine.com/default.asp. Regions of Georgia. - PowerPoint PPT PresentationTRANSCRIPT
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Chapter 4
Georgia’s Features
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Regions of Georgia
• Appalachian Plateau• Valley and Ridge region• Blue Ridge region• Piedmont region• Coastal Plain
• http://georgiamagazine.com/default.asp
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Regions of Georgia
• The Appalachian plateau region of Georgia is the northwest corner of Georgia. This region contains flat-topped mountains.
• The Cumberland Plateau marks the gradual change from flat lands in the north to the faults and folds of the Valley and Ridge Plateau of Sand and Lookout Mountain.
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Differences
Cumberland PlateauLarge, flat-topped
Lookout MountainSteep, rising more to a point
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Differences
http://www.nps.gov/cuga/index.htmhttp://www.lookoutmountain.com/
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Differences
http://www.nps.gov/blri/index.htmBlue Ridge, Mountains in the clouds
Piedmont areaFlat, low hills
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Differences
Coastal Plains
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Appalachian Mountains
• Landforms were formed over millions of years.
• During that time multiple tectonic plates collided to build mountains and caused volcanic eruptions.
• At certain times, much of what is now Georgia was covered by shallow seas
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Appalachian Mountains
• Sediments were deposited in these waters, which would later form the sedimentary rock found in the Valley and Ridge and Appalachian Plateau regions.
• A total of three collisions involving North America occurred.
• The last formed the Appalachian Mountains, as well as the folds and faults of the Valley and Ridge regions.
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Appalachian Mountains
• Separating the Valley and Ridge region from the Piedmont region is the Cartersville Fault.
• This fault, actually runs from Alabama to Pennsylvania.
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Blue Ridge and Piedmont region
• This area was affected by the same geologic activities as the Valley and Ridge, but with different results.
• Many of the rocks found in the Blue Ridge are metamorphic, which is rock that changes in form.
• These rocks formed from the heat and pressure caused by plate tectonics.
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Blue Ridge and Piedmont region
• The Blue Ridge is also made up of igneous rocks-rocks that were once liquid.
• When Pangaea broke up about 220 million years ago, the Appalachians were torn apart.
• The rolling hills of the Piedmont region are the remains of heavily eroded mountain peaks.
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Stone Mountain
• Stone mountain, the world’s largest mass of granite, was uncovered as the softer rock that covered it was eroded.
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What is the Coastal Plain
• During the breakup, the Coastal Plains region was formed.
• The coastal plain is generally wet, including many rivers, marsh, and swampland.