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11 Cards in this Set
- Front
- Back
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Rock breaks apart in thin sheets parallel to bedding planes
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Fissility
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primary constituents of shales and mudrocks
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clay fine sized quartz and feldspar
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Mineralogical composition is controled by what 5 things?
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Depositional environment, tectonic setting, source, grain size, diagenesis
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refers to materials brought from outside source.
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detrital
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anything that changes the rock after deposition
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diagenesis
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conversion of loosely, unconsolidated rock to solid rock, through the process of cementation, compaction, desication, and crystalization
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lithification
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2 changes occuring in rock at less than 250 degrees C?
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Diagenesis and Lithification
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3 Stages of Diagenesis
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eodiagenesis, mesodiagenesis, telogenesis
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the top portion of diagenesis where the replacement of cementation occurs
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eodiagenesis
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2nd phase of diagenesis where cementation, disolution, compaction, replacement occurs. In clay minerals its authegenesis.
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mesodiagenesis
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3rd process in diagenesis where the rock is brough back to the surface. Dissolving then precipitating minerals
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telogenesis.
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