scarp-foot knick

views updated May 08 2018

scarp-foot knick An abrupt change in gradient that often occurs in semi-arid environments between a pediment and the adjacent scarp. It is the boundary between the zones of scarp retreat and pedimentation. It may be joint controlled, when it is often so abrupt that a boot may barely be placed in it.

A Dictionary of Earth Sciences AILSA ALLABY and MICHAEL ALLABY

scarp-foot knick

views updated May 29 2018

scarp-foot knick An abrupt change in gradient that often occurs in semi-arid environments between a pediment and the adjacent scarp. It is the boundary between the zones of scarp retreat and pedimentation.

A Dictionary of Ecology MICHAEL ALLABY

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scarp-foot knick

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