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Earth Science
Term | Definition |
---|---|
Sediments | small pieces of rock that are moved and deposited by water. |
Weathering | produces rock and mineral fragments known as sediments |
Chemical Weathering | minerals in a rock are dissolved or otherwise chemically changed |
Physical Weathering | minerals remain chemically unchanged |
Erosion | The removal and transport of sediments |
Deposition | when sediments are transferred into the ground or into the bottom of a body of water |
Lithification | with sediments going under extreme pressure it makes them sedimentary rocks |
Compaction | the weight of overlying sediments forces the sediment grains closer together causing physical change |
Cementation | when mineral growth glues sediment grains together. |
Bedding | the way sediment settles out of water or wind. |
Graded bedding | in marine sedimentary rocks that were deposited by under water land slides |
Cross Bedding | as inclined layers of sediment are deposited across a horizontal surface. |
Ripple Marks | When sediment is moved into small ridges by wind or wave action. |