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Physiographic Provinces of Virginia

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dante-valencia
18 diapositives · 351 Views · Nov 21, 2014

Virginia is divided into five major physiographic provinces: Coastal Plain, Piedmont, Blue Ridge, Valley & Ridge, and Appalachian Plateau. Each province possesses distinct features, such as the gently sloping Coastal Plain rich in sedimentary deposits and the rugged older rocks of the Blue Ridge Mountains. The Piedmont region showcases rolling hills and valleys, while the Valley & Ridge presents long ridges separated by valleys. The Appalachian Plateau is characterized by plateaus and rich deposits of coal, oil, and natural gas. This overview highlights their significance in Virginia's geology.

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  1. Physiographic Provinces of Virginia Earth Science Deborah Bowyer, ITRT

  2. 5 Virginia is divided into ____ major physiographic provinces (physio-physical features, graphic—map of). Coastal Plain Valley & Ridge Appalachian Plateau E W Blue Ridge Piedmont

  3. The Coastal PlainA gently seaward sloping surface in Eastern Virginia 300’ -Coastal Plain Pile “_______” of loose sediments that have eroded from the mountains. 0’ sea level Sediments The highest elevation is about 300 ft. above sea level.

  4. Kinds of rocks: • Ages of rocks: • Fossils: Sedimentary, loose sediment 0-225 mya (millions of years ago) Sea critters

  5. sand This area is rich in _____ and ______ resources. gravel Fall line: b. Major cities are located here. a. Waterfalls and rapids are located here.

  6. The PiedmontA gently rolling area with hills and valleys (pied-foot, mont-mountains). This is located in Central Virginia. E Blue Ridge Coastal Plain Piedmont W

  7. subduction An episode of ___________that occurred before the formation of the Appalachian Mountains created theserocks. They are partof the ______ ofthe mountains. roots

  8. Kinds of rocks: • Ages of rocks: • Fossils: Igneous and metamorphic(some sediment) 245-570 mya None Exception: Culpepper Co.Dinosaur tracks

  9. Blue Ridge A narrow line of mountains north of Roanoke, a broader, upland surface south of Roanoke. _________ mountains in Virginia. The Appalachian mountains are ________ and more _________ than the Rocky Mountains. Highest older eroded

  10. Mount Rogers Elevation: 5719’ W Highestpeak __________________ in Virginia.

  11. Kinds of rocks: • Ages of rocks: • Fossils: Igneous & metamorphic 245 mya-1 bya None Metamorphosis ____________ occurred during the Appalachian Mountain formation. These are the ________ rocks in Virginia. oldest

  12. Valley and RidgeAn area of long, parallelridges separated by valleys W Ridges Valleys Great Valley Blue Ridge Plateau Thrust Faults Alleghany County

  13. Sections of hard, resistant rocks make up the ridges, while soft, eroded limestone makes up the valleys. ________ has eroded and leaves caves and caverns (karst topography). Limestone

  14. Folding and faulting occurred during the formation of the AppalachianMountains (when N. America collided with Africa and Europe). This occurred during the PaleozoicEra (300-265 million years ago).

  15. Kinds of rocks: • Ages of rocks: • Fossils: Sediment 350-570 mya Sea critters

  16. Appalachian PlateauThis is a series of plateaus separated by faults. “The Boot” This area is known for rich deposits of ____, ____, and _________. coal oil natural gas Coal seams

  17. Kinds of rocks: • Ages of rocks: • Fossils: Sediment 286-360 mya Scale treesFernsSome sea critters

  18. W E Appalachian Plateau Plateaus “Rolling Hills” Valley & Ridge Faults Alleghany County