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37 Cards in this Set
- Front
- Back
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natural building block of earth's lithosphere combined aggregation of mineral |
Rocks |
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Study of rocks |
Petrology |
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A person who study rocks |
Petrologist |
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Three types of rocks |
Igneous Sedimentary Metamorphic |
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Formed from cooling and solidification of magma or laval |
Igneous |
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Types of igneous rocks |
Intrusive Extrusive |
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Solidify beneath the earth's surface Pegmatite and Granite Coarse grained |
Intrusive (magma) (plutonic) |
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Solidify on earth's surface Basalt and obsidian Fine grained |
Extrusive (lava) |
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Composition of igneous rocks |
Felsic Mafic Intermediate Ultramafic |
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Felsic |
Light |
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Mafic |
Dark |
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Intermediate |
Mix of felsic and mafic |
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Ultramafic |
Very dark |
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Formed from the compaction and cementation of sediments Type of rocks that may contain fossils, or evidence of past life |
Sedimentary Rocks |
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Fragments of rock that have been broken down as a result of weathering |
Sediment |
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Types of sedimentary |
Clastic Chemical Organic |
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From shells and rocks |
Clastic |
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Formed when dissolved minerals precipitate from a solution |
Chemical |
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Formed from the accumulation and lithification of organic debris |
Organic |
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Formed from pre existing rocks (Metamorphic, sedimentary and igneous) |
Metamorphic |
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Transformation of one type of rock to another |
Metamorphism |
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Regional metamorphism |
Due to pressure between the plates |
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Happens on layers of rocks having contact with heat (magma) |
Contact metamorphism |
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Classifications of metamorphic rocks |
Non-foliated (non-layered) Foliated (layered) |
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Mainly due to heat from contact metamorphic |
Non-foliated (non-layered) |
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Mainly due to pressure from regional metamorphic |
Foliated (layered) |
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Big crystals |
Intrusive |
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May be vesicular |
Extrusive |
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Overall appearance of rock |
Texture |
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Fine grained |
Aphanitic |
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Coarse grained |
Phaneritic |
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Large crystals with small crystals |
Porphyritic |
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Looks like a block of (colored) glass, with no visible mineral crystals, |
Glassy |
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Hard or soft rocks Older rocks |
Pyroclastic |
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Formed when dissolved minerals precipitate from a solution |
Chemical sedimentary rock |
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Found in sedimentary rock |
Fossils |
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Three types of rocks |
Sedimentary Igneous Metamorphic |
