MASTER OF ARTS (GEOGRAPHY) Study Guide - Final Guide: Frost Heaving, Frost Weathering, Periglaciation
1 Apr 2023
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Document Summary
Periglacial landforms are restricted to areas that experience cold but essentially nonglacial climates: periglacial regions are very active geomorphological areas. Mechanical splitting of rocks by ice (gelifraction), frost heaving of the ground (geliturbation), solifluction and nivation are all important processes. In addition, each spring, large quantities of water from melting snow and ice rapidly erode the debris scattered and moved down the slopes. In 1950 l. c peltier put forward the concept of a periglacial cycle of erosion. The process by which there is gradual flattering of the surface in the periglacial regions is called. The penultimate landform is a surface of low local relief, not controlled by any base level, and has been called a cryoplain or an altiplain : the present-day periglacial zones are found in the arctic regions of. Permafrost is not a necessary condition for creating periglacial landforms.
