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6-2 Flash Cards
Types of Sedimentary Rocks
Question | Answer |
---|---|
Clastic | Are formed from the abundant deposits of loose sediments that accumulate on Earth's surface. |
Coarse Grained Rocks | Sedimentary rocks consisting of gravel- sized rock and mineral fragments are classified as coarse-grained rocks, |
Conglomerate | Have rounded, gravel-sized particles. |
Breccia | Are composed of angular, gravel-sized particles. |
Porosity | Is the percentage of open spaces between grains in a rock. |
Fine Grained Rocks | Are sedimentary consisting of silt-and clay-sized particles |
Evaporites | When the concentration of dissolved minerals in a body of water reaches saturation, crystal grains precipitate out of solution and settle to the bottom. |
Biochemical Sedimentary Rocks | Are rocks that are formed from the remains of once-living organisms. |