Rock cycle –Sedimentary notes
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ROCK CYCLE –SEDIMENTARY NOTES
Brought to you by: Mr. Henderson
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Formation Process of
changing rocks due to… Weathering
(breakdown of rock)
Erosion (movement of weathered material)
Compaction of these sediments and cementation with CaCO3 or SiO2
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Types of Sedimentary Rocks Clastic – based on grain size
Very fine – clay
Fine - silt
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Types of Sedimentary Rocks – Cont’d.
Coarse – sand
Moderate – Arkose
Pebble – Conglomerate
Boulder
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Types of Sedimentary Rocks – Cont’d.
Chemical – due to a chemical process or organic material being present
Rock Salt
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Evaporate – due to the evaporation of water
Biochemical – organic material such as decaying flora present
Types of Sedimentary Rocks – Cont’d.
Coal
Gypsum
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Lechuguilla Cave – Gypsum Crystals
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Reactive – effervescence in presence of acid
Types of Sedimentary Rocks – Cont’d.