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.
Suggested Citation
Savage, W.Z., and Varnes, D.J., 1987, Mechanics of gravitational spreading of steep-sided ridges («sackung»): Bulletin of the International Association of Engineering Geology, v. 35, no. 1, p. 31-36, https://doi.org/10.1007/BF02590474.
| 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 |