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hogback

hogback, sharp-crested ridge with steep slopes on both sides, formed by the erosion of steeply tilted rock layers. Hogbacks are commonly formed along the eroded flanks of large, tightly folded anticlines and synclines (see fold). Impressive hogbacks are seen in the foothills east of the Front Range of the Rocky Mts. in Colorado, where they are formed by the vertical or steeply dipping layers of Dakota sandstone. This region forms the intake area for the Dakota artesian system. Hogbacks are also common in the Black Hills of South Dakota where sedimentary rocks were uplifted by the intrusion of Black Hills granite. See cuesta.

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"hogback." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 29 May. 2017 <http://www.encyclopedia.com>.

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"hogback." The Columbia Encyclopedia, 6th ed.. . Retrieved May 29, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/hogback

hogback

hogback (hog's back) Narrow, symmetric ridge, underlain and controlled by a resistant bed dipping at some 40° or more. It is a limiting case of a cuesta.

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"hogback." A Dictionary of Earth Sciences. . Encyclopedia.com. 29 May. 2017 <http://www.encyclopedia.com>.

"hogback." A Dictionary of Earth Sciences. . Encyclopedia.com. (May 29, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/hogback

"hogback." A Dictionary of Earth Sciences. . Retrieved May 29, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/hogback

hogback

hog·back / ˈhôgˌbak; ˈhäg-/ • n. a long hill or mountain ridge with steep sides.

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"hogback." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 29 May. 2017 <http://www.encyclopedia.com>.

"hogback." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (May 29, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/hogback

"hogback." The Oxford Pocket Dictionary of Current English. . Retrieved May 29, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/hogback