Calving Glacier
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Transcript of Calving Glacier
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Calving Glacier
http://www.youtube.com/embed/hC3VTgIPoGU?rel=0
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Aim --> Sequence of Events
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Uniformitarianism - processes that occur today have always occurred. "The present is the key to the past." Examples include weathering, erosion, earthquakes etc.
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Law of Superposition - oldest rocks are on bottom. exceptions - extensive folding, thrust faulting, igneous intrusions
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Law of Original Horizontality - Sedimentary rocks are deposited
underwater in horizontal layers. THEY CAN OVERTURN AND CRACK. How?
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Igneous intrusion - magma rises up/squeezes between rock layers below ground. Causes contact metamorphism in older layers.
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Cross Cutting Relationships - any formation which crosses another is younger than the formations it crosses. Examples; Folds, Faults, Intrusions, Extrusions, Unconformities
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Faulting
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Folding
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Folding
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Tilting
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Layers are formed according to superposition.
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Faulting
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Something happens to uplift the area: folding faulting, etc.
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Erosion wears away the uppermost layers
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Area submerges and deposition begins again.
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What came first the rock or the pieces of rock that the rock is made up of?
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Law of Inclusion - the sediments which make up a rock are older than the rock
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List the sequence of events
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Describe the sequence of events for the above diagram
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Sequence of Events Lab
• You must tell when Unconformity (buried erosional surface happens), Folding, Faulting, Tilting, Igneous Intrusions…..