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6-2 Sediment Types

6-2 Types of Sedimentary Rocks

TermDefinition
Clastic The most common sedimentary rocks, formed from abundant deposits of loose sediments accumulated on the Earth's surface
Coarse-Grained Rocks Sedimentary rocks consisting of gravel-sized rock and gravel fragments
Conglomerate Transportation rounds and abrades the gravel while particles scrap against each other. Lithification turns them into these.
Breccia Composed of angular, gravel-sized particles - indicates that the sediments from their formation did not have time for their rounding
Porosity Percentage of open spaces between grains in rocks
Fine-Grained Rocks Sedimentary rocks consisting of silt and clay-sized particles
Evaporites Layers of chemical sedimentary rocks formed in arid regions and drainage basins on continents with low water flow
Biochemical Sedimentary Rocks Formed from the remains of once-living organisms
Created by: Nathale24
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