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50 Cards in this Set
- Front
- Back
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Disintegration of rock due to volume changes associated with a reduction in pressure as a result of rock that is brought to the surface.
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Unloading
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A system which processes counteract external changes to the system and stabilize the system by making adjustments within itself
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Negative feedback system
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Mass movement characterized by a concave up sliding plane and tension cracks
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slump
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volcanic mudflow
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lahar
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Occurs when driving forces are greater than resisting forces
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mass wasting
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Landforms are created by the interplay of these three things:
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Driving forces, resistant framework, time
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transportation of weathered material
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erosion
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geomorphic feature characterized by rocks that fall and peel off like and oinion.
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exfoliation dome
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wetting and drying of rock is very effective for the weathering of
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shale
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most fundamental form of chemical weathering
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dissolution
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direction a slope faces with respect to the sun
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aspect
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slow downslope movement of material
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creep
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According to Schumm, the meandering wavelength is dependent on...
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discharge and %sand silt on riverbanks
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two ways a stream capture can occur
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intercision and abstraction
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the least susceptable mineral to chemical and physical weathering on earth's surface.
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quartz
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Occur mostly in dry, hot settings
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inselburgs
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fluvial load where material is dissolved in solution
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dissolved load
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bedload where grains "hop" along the bottom of the riverbed
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saltation
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mode of transport that tension on the surface water helps in
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floatation
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way most fine grained material is transported in a river
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suspended load
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bedload where grains "roll" along the riverbottom
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traction
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What is an olgive
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alternations of light and dark areas on a photo. They represent swells and ridges. Ridges form in the summer and swells in the winter.
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the melting and refreezing of ice due to pressure
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regelation
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Climax of the Wisconsin glaciation
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20ka
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small dome-shaped hill of ice that is cored with ice
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pingo
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wind-blown silt
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loess
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Tower and cockpit karst form in this kind of climate
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tropical
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compound sinkholes
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uvalda
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3 processes acting on shorelines
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tides, waves, currents
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oscillation in lake level
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seiche
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recrystalized snow intermediate between snow and glacial ice
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firn
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stream that flows into a karst feature underground
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disappearing stream
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uplift associated with freezing groundwaters
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frost heave
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glaciers can erode in several different ways, name 2
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plucking and abrasion
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debris accumulated at the terminus of a glacier
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end moraine
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multiple end moraines formed as a glacier successively retreats
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recessional moraine
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linear ridges of till accumnulated along valley walls
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lateral moraines
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fomred as lateral moraines are caught between two tributary glaciers
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medial moraines
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till-covered areas of low relief lacking ridges
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ground moraines
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stable most interior portion of a continent with low relief
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craton
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craton made of very old igneous rock
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shield
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thin veneer of sedimentary rocks on top of the shield craton
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stable platform
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What part of the continent is typically the most unstable and has the most relief?
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the edges
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shallow portions of the ocean that are underlied by continental crust
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shelf
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if erosion is < uplift _______ is formed
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anticlinal ridges
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erosion of the underlying softer sediment causes overlying more resistant sediment to fall off as boulders
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basal sapping
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streams move readily through resistant strate until it hits less resistant rock changing the stream flow
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homoclinal shifting
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more resistant rock from homoclinal shifting
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homoclinal ridges
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resistant rocks with a gentle dip
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cuestas
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resistant rocks with a steep dip
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hogbacks
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