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EspañolHOGBACK (GEOLOGY)
A hogback is a linear ridge composed of steeply tilted hard and soft strata of rock that protrude out of the surrounding strata. The softer rock erodes quicker than the capping harder rock above. In some cases the two strata that compose a hogback are different types of sedimentary rock that have differing weathering rates. Where the hard and soft rock strata meet this creates cliffs that steepen as the softer rock erodes away due to differential erosion. The defining characteristics of a hogback is its steep dip slope that is greater than 30° - 40° and near symmetric slope on each ridge face. A hogback is formed much like a cuesta but the more resistant rock has a steeper slope. The name comes from the ridge resembling the ridge between the shoulders of a hog. 
Cuesta
Dip slope
Easterbrook, D. J. (1999) ''Surface processes and landforms.'' (Second Ed). Prentice Hall, Upper Saddle River, New Jersey.
Hogback west of Denver, Colorado. It is formed by the more erosionally resistant Lytle and South Platte Formations protecting the softer, slope-forming Morrison Formation.
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| See Also |
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See Also
Cuesta
Dip slope
References
Easterbrook, D. J. (1999) ''Surface processes and landforms.'' (Second Ed). Prentice Hall, Upper Saddle River, New Jersey.
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