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Mechanics of gravitational spreading of steep-sided ridges («sackung»)

Bulletin of the International Association of Engineering Geology

By:
and
DOI: 10.1007/BF02590474

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Abstract

Large-scale gravitational spreading of steep-sided ridges characterized by linear fissures, trenches, and uphill-facing scarps high on the sides and tops of ridges are known worldwide. Such spreading, termed sackung, is commonly attributed to pervasive plastic deformation of a rock mass, and is here analyzed as such. Beginning with a previously developed exact elastic solution for gravity-induced stresses in a symmetric ridge, stresses calculated from the exact solution are used in the Coulomb failure criterion to determine the extent of ridge failure under self-weight. Finally, when the regions of failure are established, a plastic flow solution is applied to predict the location of and sense of movement on upward-facing scarps near ridge crests and other features common in sackung. ?? 1987 International Assocaition of Engineering Geology.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Mechanics of gravitational spreading of steep-sided ridges («sackung»)
Series title:
Bulletin of the International Association of Engineering Geology
DOI:
10.1007/BF02590474
Volume
35
Issue:
1
Year Published:
1987
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Bulletin of the International Association of Engineering Geology
First page:
31
Last page:
36