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6-1 vocab
Term | Definition |
---|---|
sediments | small pieces of rock that are moved and deposited buy water, wind, glaciers and gravity |
weathering | produces rock and material fragments known as sediments |
chem. weathering | occurs when the mineral 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 | physical and chem processes that transform sediments into sedimentary rocks |
compaction | the weight of overlying sediments forces the sediment grains closer together, causing physical changes |
cementation | occurs when mineral growth glues sediment grains together into solid rock |
bedding | primary feature of sedimentary rocks is horizontal layering |
graded bedding | bedding in which the particle size become progressively heavier and coarser toward the bottom layers |