rocksrocks . youtube.co m/watch?v= 7syqx_yg d2c
TRANSCRIPT
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ROCKROCKSS
ROCKROCKSS
http://www.youtube.com/watch?v=7SYQX_ygd2c
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What is a Rock?What is a Rock?
Minerals or organic matter which have been• cemented together • squeezed together • heated together • melted and cooled together.
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Rock TypesRock TypesIgneousSedimentaryMetamorphic
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IGNEOUSIGNEOUS
•“Ignus” = fire
•From volcanoes
•Can be intrusive or extrusive
•In - “inside” (magma…from my secret volcano lair…)
•Ex - “out of” (lava)
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•Granite
•Obsidian
•Intrusive•Cools inside Earth
•Extrusive•Where does this cool?
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SEDIMENTARYSEDIMENTARY
•Formed from other rocks that have been broken apart by weathering and erosion
•Named by size & composition
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•Conglomerate
•Sandstone
•Mudstone
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Limestone (w/ fossils) Limestone (w/ fossils)
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CoalCoal
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METAMORPHICMETAMORPHIC
•“to change form”
•Caused by heat and/or pressure
•Limestone becomes marble
•Granite becomes gneiss
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•Limestone
•Granite
•Marble
•Gneiss
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Sedimentary
Rock
Igneous Rock
Metamorphic
Rock
Sediment
Sediment
MagmaLava
Weathering
Compaction and Cementation
Compaction and
Cementation
Weathering
Weathering
Melting
Cooling
Heat and/orPressure
Heat and/or Pressure
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Minerals in CT rocksMinerals in CT rocks
•Feldspar (CT)
•Fluorite
•Mica (CT)
•Olivine
•Quartz (CT)
•Dolomite
•Graphite
•Calcite
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•conglomerate - made of pebbles (larger pieces)
•sandstone - made of sand
•limestone - often include marine fossils (calcium carbonate…or “lime”)
•mudstone - made of mud
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Sedimentary
Rock
Igneous Rock
Metamorphic
Rock
Sediment
Sediment
MagmaLava
WeatheringErosion
Compaction and Cementation
Compaction and
Cementation
WeatheringErosion
WeatheringErosion
Melting
Cooling
Heat and/orPressure
Heat and/or Pressure