Stone Polygons

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Stone Polygons

 

(stone wreaths), a type of permafrostmicrorelief consisting of a system of polygons or rings composedof aleurite surrounded by coarsely fragmented material. Theyoccur as a result of combinations of polygonal fracturing, swell-ing, and permafrost sorting of soils within the active layer inlithologically heterogeneous rocks.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.