Rocks Rocks are aggregates of minerals Identification of Rocks is by texture and composition Texture...
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Rocks Rocks are aggregates of minerals Identification of Rocks is by texture and composition Texture is the size, shape and arrangement of grains Composition is the minerals in the rock.
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Transcript of Rocks Rocks are aggregates of minerals Identification of Rocks is by texture and composition Texture...
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RocksRocks are aggregates of minerals
Identification of Rocks is by texture and compositionTexture is the size, shape and arrangement of grainsComposition is the minerals in the rock.
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Grain SizeFine
Medium
Coarse
Glassy
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Arrangement - Cemented
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Arrangement - Interlocking
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Arrangement - Foliated
Arrangement - Frothy
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04_02.jpgIgneous Rocks cooling of magma or lava. Intrusive and ExtrusiveComposition: silicic, mafic, intermediate
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Sedimentary RocksClastic cemented fragmentsCarbonates cemented shell fragmentsChemical precipitated from water interlockingComposition (Minerals): calcite, dolomite, quartz, halite
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Regional Metamorphism - Foliation
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06_17.jpgContact Metamorphism of LimestoneLimestoneMarble