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Geomorphology Weely Notes 10-2.htm

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><FONT size="+1" color="#000000"></B>10-2</P
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>Saline lake - playa, salinas, sabkha<FONT size="+1"> </P
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><FONT size="+1">Reg = stony desert == gobi (ChinaMmongolia)<FONT size="+1"> </P
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><FONT size="+1">Desert pavement &amp; rock varnish<FONT size="+1"> </P
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><FONT size="+1">Ergs = sandy desert hamada @= barren rock<FONT size="+1"> </P
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><FONT size="+1">Desert Mts - SWUS &amp; Mex, Chile/ Peru, Australia, Sahara<FONT size="+1"> </P
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><FONT size="+1">Bajada - bahada, coalescing fans at mt. front<FONT size="+1"> </P
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><FONT size="+1">Pediments all piedmont land forms (slopes cut on bedrock)<FONT size="+1"> </P
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><FONT size="+1">(Pediment similar to alluvial fan)<FONT size="+1"> </P
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><FONT size="+1">Sheet floods - shallow but broad<FONT size="+1"> </P
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><FONT size="+1">Pediment to mt. slope gets buried bolson (temporary inler mountain basin)<FONT size="+1"> </P
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><FONT size="+1">Savanna - insulberg - steep sided rocky hills - isolated wash plans of rivers (infiltrate to<FONT size="+1"> </P
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><FONT size="+1">h20 table)<FONT size="+1"> </P
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><FONT size="+1">Sediment less than .2 mm<FONT size="+1"> </P
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><FONT size="+1">Saltation - Bounce in bed load.<FONT size="+1"> </P
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><FONT size="+1">Surface creep - dune movement<FONT size="+1"> </P
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><FONT size="+1">Desert pediment = bare rock Hamada stony - reg (gobi) sandy erg<FONT size="+1"> </P
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><FONT size="+1">Wind erosion - deflation - sand removal - abrasion<FONT size="+1"> </P
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><FONT size="+1">Ventifacts - rock scrapes<FONT size="+1"> </P
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><FONT size="+1">Yardangs - tear drop wind aorasion - quebradas - gullies<FONT size="+1"> </P
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><FONT size="+1">Blowouts - exposed (buffalo wallows)<FONT size="+1"> </P
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><FONT size="+1">Deposition - Wind ripples (small) dunes (large)<FONT size="+1"> </P
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><FONT size="+1">Compound dunes - draas<FONT size="+1"> </P
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><FONT size="+1">(4-6m - down wind)<FONT size="+1"> </P
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><FONT size="+1">Sand shadows - lee<FONT size="+1"> </P
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><FONT size="+1">Sand drift - in lee of dune<FONT size="+1"> </P
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><FONT size="+1">Sand Dune - Slip face to lee<FONT size="+1"> </P
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><FONT size="+1">Windward<FONT size="+1"> </P
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><FONT size="+1">Dunes<FONT size="+1"> </P
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><FONT size="+1">Whaleback (zebra) longitudinal - similar to linear<FONT size="+1"> </P
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><FONT size="+1">Barchand - U shaped<FONT size="+1"> </P
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><FONT size="+1">Barchanoid ridge -<FONT size="+1"> </P
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><FONT size="+1">Transverse -111<FONT size="+1"> </P
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><FONT size="+1">Blowout -<FONT size="+1"> </P
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><FONT size="+1">Dome<FONT size="+1"> </P
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><FONT size="+1">Parabolic<FONT size="+1"> </P
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><FONT size="+1">Linear<FONT size="+1"> </P
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><FONT size="+1">Star<FONT size="+1"> </P
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><FONT size="+1">&quot;<FONT size="+1"> </P
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> </P
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