Presentation on theme: "Physiographic Provinces of Virginia Earth Science Deborah Bowyer, ITRT."— Presentation transcript:
Physiographic Provinces of Virginia Earth Science Deborah Bowyer, ITRT
Virginia is divided into ____ major physiographic provinces (physio-physical features, graphic—map of). 5 Coastal Plain PiedmontBlue Ridge Valley & Ridge Appalachian Plateau W E
The Coastal Plain The Coastal Plain A gently seaward sloping surface in Eastern Virginia 0’ sea level 300’ -Coastal Plain Sediments “_______” of loose sediments that have eroded from the mountains. Pile The highest elevation is about 300 ft. above sea level.
1. Kinds of rocks: 2. Ages of rocks: 3. Fossils: Sedimentary, loose sediment mya (millions of years ago) Sea critters
This area is rich in _____ and ______ resources. sand gravel b. Major cities are located here. Fall line: a. Waterfalls and rapids are located here.
A gently rolling area with hills and valleys (pied-foot, mont-mountains). This is located in Central Virginia. The Piedmont A gently rolling area with hills and valleys (pied-foot, mont-mountains). This is located in Central Virginia. The Piedmont W E Blue Ridge Piedmont Coastal Plain
An episode of ___________ that occurred before the formation of the Appalachian Mountains created these rocks. They are part of the ______ of the mountains. subduction roots
1. Kinds of rocks: 2. Ages of rocks: 3. Fossils: Igneous and metamorphic (some sediment) mya Exception: Culpepper Co. Dinosaur tracks None
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 oldereroded
Mount Rogers Elevation: 5719’ ___________ _______ in Virginia. Highest peak W
1.Kinds of rocks: 2.Ages of rocks: 3.Fossils: Igneous & metamorphic 245 mya-1 bya None ____________ occurred during the Appalachian Mountain formation. These are the ________ rocks in Virginia. Metamorphosis oldest
Valley and Ridge An area of long, parallel ridges separated by valleys Valley and Ridge W Plateau RidgesValleysGreat Valley Blue Ridge Thrust Faults Alleghany County
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
Folding and faulting occurred during the formation of the Appalachian Mountains (when N. America collided with Africa and Europe). This occurred during the Paleozoic Era ( million years ago).
1.Kinds of rocks: 2.Ages of rocks: 3.Fossils: Sediment mya Sea critters
Appalachian Plateau Appalachian Plateau This is a series of plateaus separated by faults. “The Boot” This area is known for rich deposits of ____, ____, and _________. coaloil natural gas Coal seams
1.Kinds of rocks: 2.Ages of rocks: 3.Fossils: Sediment mya Scale trees Ferns Some sea critters
WE “Rolling Hills” Plateaus Appalachian Plateau Valley & Ridge Alleghany County Faults