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Rock Types

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by

Michael Geisen

on 16 April 2014

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Transcript of Rock Types

Quartzite
Schist
Chalk
Limestone
Sandstone
Conglomerate
Granite
Tuff
Pumice
Obsidian
Basalt
Igneous
Forms directly from magma
Extrusive
Form above ground
Form below ground
Crystals cool quickly,
so they're small
Crystals cool slowly,
so they grow larger!
Forms from sediments being compacted
Clastic
Organic
Form from living things
Form from pebbles, sand,
silt, or mud
Mudstone/Shale
Metamorphic
Deformed by heat and pressure
Foliated
Non-Foliated
banded appearance
non-banded appearance
Gneiss
Slate
Marble
Intrusive
Sedimentary
Rock Types
highly deformed, almost recrystallized
highly deformed, more flakey grains
less deformed, made from shale
deformed limestone
deformed sandstone
Full transcript