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erosion and deposition by wind ice and gravity

Terms in this set (8)

abraded rock
abrasion is the grinding between two rocks, sandblasting effect slowly erodes by stripping away surface, only happens with strong winds, loose sand, soft rocks
desert pavement
removal of fine sediment by wind, wind always moves top layer of sediment, after a while the rock fragments may be only material
dunes
mounds of wind-deposited sand, when wind hits an obstacle it slows down and drops material, mound forms and original obstacle is buried
loess
thick deposit of windblown, fine sediment, wind can move extremely fine sediment long ways, can feel like talcum powder
flowing ice
glacier: large mass of moving ice formed by snow, gravity causes glaciers to move, steeper slope=faster movement
alpine glaciers
forms in a mountainous area, flow of water in a stream creates a V shape, glacier widens the valley into a U shape
gravity
slow mass movement, rapid mass movement both are controlled by gravity, creep: extremely slow movement of material downhill
continental glaciers
alpine
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