Mechanics of gravitational spreading of steep-sided ridges («sackung»)
Bulletin of the International Association of Engineering Geology
By: W. Z. Savage and D. J. Varnes
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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.
| 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 |
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