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6-1 flash cards
Term | Definition |
---|---|
Sediments | Small pieces of rock that are moved and deposited by water. |
Weathering | Weathering produces rock and mineral fragments known as sediments. |
Chemical Weathering | Chemical weathering occurs when the minerals in a rock are dissolved or otherwise chemically changed. |
Physical Weathering | Minerals remain chemically unchanged. Rock fragments break off of the solid rock along fractures or grain boundaries. |
Erosion | The removal and transport of sediments. |
Deposition | When transported sediments are deposited on the ground or sink to the bottom of a body of water. |
Lithification | The process that loose and under consolidated Sediment particles transform into hard and solid rocks. |
Compaction | The exertion of force on something so that it becomes more dense. |
Cementation | Cementation occurs when mineral growth glues sediment grains together into solid rock. |
Bedding | The primary feature of sedimentary rocks is horizontal layering. |
Graded bedding | Bedding in which the particle sizes become pro-gressively heavier and coarser toward the bottom layers. |
Cross Bedding | Another characteristic feature of sedimentary rocks. |
Ripple Marks | When sediment is moved into small ridges by wind or wave action or by a river current, |