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19 Cards in this Set
- Front
- Back
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Mass Movement
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The downslope motion of
rock, regolith (soil, sediment, and debris), snow, and ice. |
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Angle of Repose
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Loose granular material assumes
a slope angle due to the particle size and the shape and the surface roughness of fragments. |
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Creep
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the slow downhill
movement of regolith due to seasonal expansion and contraction of regolith. |
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Solifluction
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slow downhill movement of tundra.
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Slumping
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mass movement by sliding of regolith as coherent blocks.
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Head Scarp
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exposed upper part of the failure surface
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Bulging Toe
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where material piles up
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Mudflow
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a slurry of water and fine sediment
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Debris Flow
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a mudflow with many large rocks.
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Lahar
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special volcanic mud or debris flow.
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Rock Slide
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a slide consisting of rock only.
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Debris Slide
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a slide composed mostly of regolith.
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Avalanche
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a turbulent cloud of debris and air.
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Snow Avalanche
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a thick mass of snow that detaches from a mountain peak.
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Wet Avalanche
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avalanches behave like a viscous slurry, hugging the slope and entraining little air.
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Dry Avalanche
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avalanches move cold, powdery snow.
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Submarine debris flows
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broken material moves as a
slurry of mud with larger clasts. |
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Turbidity currents
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currents move as a turbulent cloud of suspended
sediment. |
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Submarine Slumps
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semicoherent blocks that break and slip along failure
planes. |
