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Saturday, July 23, 2011
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What is the difference between Zeugen and Yardangs
What is the difference between Zeugen and Yardangs? they look quite similar to me.
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Saturday, July 23, 2011
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" Probably the only landforms of deserts that can be confidently ascribed to wind abrasion alone are the comparatively unimportant "yardangs" and allied "ridge and furrow" features. These comprise elongated depressions, developed by deflation along lines of weakness in the rock and commonly orientated in the direction of the prevailing winds, which are seaparated by upstanding or isolated masses of more resistant rock, the yardangs proper. These are rarely more than 8-10m in height, and frequently less, and show distinct signs od basal abrasion on the upwind side only."
"Zeugen: Mushroom-shaped rock that has been eroded by the abrasive action of windblown sand. The undercutting effect is concentrated near ground level, where sand movement is greatest, and is enhanced in areas of near-horizontal strata when the lowest bed is relatively weak."
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Saturday, July 23, 2011
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Perhar (Monday, July 25, 2011) |
Saturday, July 23, 2011
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Quote:
Originally Posted by Perhar
" Probably the only landforms of deserts that can be confidently ascribed to wind abrasion alone are the comparatively unimportant "yardangs" and allied "ridge and furrow" features. These comprise elongated depressions, developed by deflation along lines of weakness in the rock and commonly orientated in the direction of the prevailing winds, which are seaparated by upstanding or isolated masses of more resistant rock, the yardangs proper. These are rarely more than 8-10m in height, and frequently less, and show distinct signs od basal abrasion on the upwind side only."
"Zeugen: Mushroom-shaped rock that has been eroded by the abrasive action of windblown sand. The undercutting effect is concentrated near ground level, where sand movement is greatest, and is enhanced in areas of near-horizontal strata when the lowest bed is relatively weak."
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so basically the process is same in both cases ( wind abrasion) .. . zeugen is associated with small rocks while in case of yardangs, the same process applies on comparatively big hills which re isolated during the process. right??
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Saturday, July 23, 2011
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there is difference of vertical and horizontal formation of both the landscapes
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Perhar (Monday, July 25, 2011) |
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