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6-1 Flash Cards
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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 | 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 processes that transform sediments into sedimentary rocks. |
compaction | the weight of overlying sediments forces the sediment grain closer together causing physical change. |
comentation | force that binds the grains together |
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 progressively heavier and coarser toward the bottom layers |
cross bedding | formed as inclined layers of sediment are deposited across a horizontal surface |
ripple marks | when sediment is moved into small ridges by wind or wave actions or by a river current |