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6-2 Flash cards
Types of sedimentary rocks.
Term | Definition |
---|---|
clastic | denoting rocks composed of broken pieces of older rocks |
coarse grained rocks | Said of a crystalline rock, and of its texture, in which the individual minerals are relatively large |
conglomerate | lithified sedimentary rock consisting of rounded fragments greater than 2 millimetres (0.08 inch) in diameter. |
breccia | a rock composed of sharp fragments embedded in a fine-grained matrix |
porosity | the ratio of the volume of pores to the volume of bulk rock |
fine grained rocks | Igneous rock in which the framework of the rock consists of crystals that are too small to determine mineralogy with the unaided eye |
evaporates | a natural salt or mineral deposit left after the evaporation of a body of water. |
biochemical sedimentary rocks | formed from shells and bodies of underwater organisms. |