ROCKS

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ROCKS
They rock!
http//www.youtube.com/watch?v7SYQX_ygd2c
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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 Types

• Igneous
• Sedimentary
• Metamorphic

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IGNEOUS

• Ignus fire
• From volcanoes
• Can be intrusive or extrusive
• In - inside (magmafrom my secret volcano
  lair)
• Ex - out of (lava)

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• Granite

• Intrusive
• Cools inside Earth

• Obsidian

• Extrusive
• Where does this cool?

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SEDIMENTARY

• 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)
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Coal
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METAMORPHIC

• to change form
• Caused by heat and/or pressure
• Limestone becomes marble
• Granite becomes gneiss

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• Limestone

• Marble

• Granite

• Gneiss

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Sedimentary Rock
Compaction and Cementation
Compaction and Cementation
Weathering
Sediment
Sediment
Heat and/or Pressure
Weathering
Weathering
Igneous Rock
Heat and/or Pressure
Metamorphic Rock
Cooling
Magma Lava
Melting
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Minerals 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
  carbonateor lime)
• mudstone - made of mud

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Sedimentary Rock
Compaction and Cementation
Compaction and Cementation
Weathering Erosion
Sediment
Sediment
Heat and/or Pressure
Weathering Erosion
Weathering Erosion
Igneous Rock
Heat and/or Pressure
Metamorphic Rock
Cooling
Magma Lava
Melting