GEOL- Sedimentary Rocks
Terms
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- Sedimentary rocks in the rock cycle
- weathering --> eroding --> deposited --> Lithified
- What are the 2 lithification processes?
-
compaction
cementation - compaction
- pressured to the point where there is a loss of pore space
- cementation
- cemented by material deposited in pores
- beds
- individual rock layers
- Law of Super-position
- youngest strata of rock on top... oldest strata on bottom
- Principle of Uniformitarianism
- study todays rocks will help us understand ancient rocks and times
- Clastic / Detrital rock
-
- composed of solid particles from pre-existing rock
- classified on particle size - Chemical rock
- - consists of minerals
- maturity
- how clastic sedimentary rocks change in texture and size with time and distance from source
- What are the 2 non-clastic sedimentary rocks called?
- biochemical and organic
- biochemical rock
- fragments produced by organisms
- organic rock
- lithified remains of plant/animals
- evaporites
- deposit that forms when water is evaporated from substance