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6-2 sedimentary rock
types of sedimentary rocks
Term | Definition |
---|---|
clastic | abundant deposits of loose sediments that accumulate on earth's surface - broken |
coarse grained rocks | sedimentary rocks consisting of gravel-sized rock and mineral fragments |
conglomerate | rounded, gravel-sized particles |
breccia | angular, gravel-sized particles |
porosity | the percentage of open spaces between grains in a rock |
fine grained rocks | sedimentary rocks consisting of silt and clay-sized particles |
evaporites | layers of chemical sedimentary rocks form |
biochemical sedimentary rocks | sedimentary rocks formed from the remains of once-living organisms |