november 1, 2011. objective: –identify the 5 major regions of virginia agenda: –landscape notes...
TRANSCRIPT
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November 1, 2011
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• Objective:– Identify the 5 major
regions of Virginia
• Agenda:– Landscape Notes– Virginia Map– Virginia Map Analysis
– Homework:• Projects due Friday• Test is Friday
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Landscapes
• What is a landscape?– A region on Earth’s surface in which various
landforms are related by a common origin.• What is a landform?
– Hills, valleys, and streams
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Landscape Regions:
• Mountains are high elevations with steep gradients. They have faulted, folded, and tilted rocks.
• Plateaus are high elevations with horizontal layers. They usually have a fairly level slope
• Plains are level with little change in slope. They have a low elevation with horizontal rock layers.
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The Five Physiographic Provinces of Virginia
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The Five Provinces
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Virginia is divided into 5 provinces based on their geologic formations.
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1. Coastal Plain ( Tidewater)
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The Coastal Plain runs from the fall line on the west, to the Atlantic
Ocean on the east
• It is a terraced landscape
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• Sand, silt and clay produced by erosion of the Appalachian Mts. covers the plain
• As sea levels rose and fell, fossils were left at various layers
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Virginia Fossils
• Fossils include various marine organisms like clams, scallops, sharks teeth, and other hard remains
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Virginia Fossils
• Paleozoic, Mesozoic, and Cenozoic fossils are found in Virginia
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2. Piedmont
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Facts about the Va. Piedmont
• It is an area of rolling hills underlain by ancient igneous and metamorphic rock
• It is the largest of the provinces
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Mining the Piedmont• High quality slate is
mined from this area• The Piedmont host
one of the worlds largest kyanite mines
( see picture of kyanite )
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3. Blue Ridge Mountains
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Blue Ridge Facts
• The billion year old igneous and metamorphic rocks are the oldest in the state
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Blue Ridge Facts
• It is a high ridge separating the piedmont from the valley and ridge province
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4. Valley and Ridge Province
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Valley and Ridge• The Valley and
Ridge Province is an area of long parallel ridges and valleys underlain by ancient folded and faulted sedimentary rocks
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Cambrian fossil algal structures are found in the V&R Province
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Limestone outcrops are common in the Valley and Ridge Province
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This area is also famous for Karst
• What does karst mean?• Karst is an irregular limestone
region with sinks, underground streams, and caverns
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Sink holes!
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Caverns!
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5. Appalachian Plateau
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Appalachian Plateau Facts
• The Appalachian Plateau has rugged, irregular topography and is underlain by ancient, flat-lying sedimentary rocks
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Appalachian Plateau Facts
• Do you notice any thing in these layers?
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COAL!
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Virginia Coal
• Most of Virginia's coal is found in the Appalachian Plateau.
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Virginia Coal
• These old sedimentary rocks contain many fossils and tons of coal.