rocks
TRANSCRIPT
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Igneous, Metamorphic,
and Sedimentary Rocks
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Definition of Rock TypeFormation of Rock TypeExamples of each kind of rock
The Rock CycleQuizSummary
Overview
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Formed by the solidification of magma
What is an Igneous Rock?
Igneous Rock
Sail Rock/Igneous Rock
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Process 1Formed undergroundFormed from melted rock(magma)Magma trapped in small pocketsMagma cools down
How are Igneous Rocks formed?
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Process 2Formed above groundVolcanoes erupt
Magma flows above groundAs known as lava
Lava cools down
Igneous Formation Continued
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Granite
Scoria
Pumice
Obsidiar
Examples of Igneous Rocks
Granite Rock
Scoria Rocks
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Produced by metamorphism
What is a Metamorphic Rock?Metamorphism- Change effected by heat/pressure
Creigh Hill, Scotland
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Once “igneous” or “sedimentary”Rock under large amount of
pressureHeat builds up
This is what morphs(changes) them
How are Metamorphic Rocks formed?
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Schist
Gneiss
Marble
Slate
Examples of Metamorphic Rocks
Marble Rock
Slate Rocks
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Formed by sedimentation of earth’s surface
What is a Sedimentary Rock?
Bryce Canyon National Park
Red Canyon, Utah
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Pieces of the earth breaks down
Wash downstreamSit at bottom of the waters
Repeats process to form layersLayers form pressure over
timePressure forms the sedimentary
rock
How are Sedimentary Rocks formed?
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Sandstone
Limestone
Shale
Conglomerate
Gypsum
Examples of Sedimentary Rocks
Sandstone Rock
Shale Rock
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Igneous
Rocks
Sedimentary
Rocks
MetamorphicRocks
Heat/Pressure
Weathering/Erosion
Melting
Heat/PressureWeatherin
g/Erosion
Melting
The Rock
Cycle
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What rock is formed from…1. Solidification of
magma?2. Large amounts of
pressure or heat?3. Pieces of the earth
breaking down?
Quiz
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Igneous-From cooled magma/laveCan be above or below ground
Metamorphic-From pressure/heat on rocksOnce an igneous/sedimentary rock
Sedimentary-From pressure on layersPieces of the earth breaking down
Summary
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Shandshem, “Igneous rock intrusion by a green mineral common throughout the gabbro on Bla Bheinn and the Cuillin ridge” August 15, 2009 via Flickr, Attribution License.
Fermion, “Sail Rock” July 8, 2009 via Flickr, Attribution License. Shandshem, “Banding in a metamorphic rock called psammite/pelite, Creigh
Hill, Angus, Scotland.” August 28, 2009 via Flickr, Attribution License. Wolfgang Staudt, “nature” February 11, 2008 via Flickr, Attribution License. Alan Vernon, “Red Canyon overlook with Snow dusting” June 8, 2009
via Flickr, Attribution License. Sunset Sailor, “Shoreline granite” September 8, 2006 via Flickr,
Attribution License. Kiwi Flickr, “Scoria” March 6, 2005 via Flickr, Attribution License. Dominic’s Pics, “Marble Rock” September 24, 2008 via Flickr,
Attribution License. Aldenchadwick, “Sharp Slate” May 23, 2010 via Flickr, Attribution License. pepper_pan harris, “Sandstone III” May 27, 2009 via Flickr,
Attribution License. Seldom Scene Photography (was Old Dog Photo), “Bonne Bay shale
” October 20, 2009 via Flickr, Attribution License.