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6-1 flash cards
Term | Definition |
---|---|
Sediments | small pieces of rock that are moved and deposited by water,wind, glaciers, and gravity. |
weathering | produces rock and mineral fragments known as sediments |
chemical weathering | occurs when the minerals in a rock are dissolved or otherwise chemically changed |
physical weathering | Is where minerals remain chemically unchanged |
Erosion | The removal and transport of sediment |
Deposition | When transported sediments are deposited on the ground or sink to the bottom of a body of water. |
Lithification | The physical and chemical process that transforms sediments into sedimentary rocks. |
compaction | The weight of overlying sediments forces the sediment grains closer together, causing the physical changes |
cementation | Occurs when mineral growth glues sediment grains together into solid rock |
bedding | The primary feature of sedimentary rock is horizontal layering |
graded bedding | Bedding in which the particle sizes become progressively 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 |