Active tectonics on Deception Island (West-Antarctica): A new approach by using the fractal anisotropy of lineaments, fault slip measurements and the caldera collapse shape
Open-File Report
2007-1047-SRP-086
By: R. Perez-Lopez, J. L. Giner-Robles, J.J. Martinez-Diaz, M.A. Rodriguez-Pascua, M. Bejar, C. Paredes, and J.M. Gonzalez-Casado
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Abstract
The tectonic field on Deception Island (South Shetlands, West Antarctica) is determined from structural and
fractal analyses. Three different analyses are applied to the study of the strain and stress fields in the area: (1) field
measurements of faults (strain analysis), (2) fractal geometry of the spatial distribution of lineaments and (3) the caldera
shape (stress analyses). In this work, the identified strain field is extensional with the maximum horizontal shortening
trending NE-SW and NW-SE. The fractal technique applied to the spatial distribution of lineaments indicates a stress
field with SHMAX oriented NE-SW. The elliptical caldera of Deception Island, determined from field mapping, satellite
imagery, vents and fissure eruptions, has an elongate shape and a stress field with SHMAX trending NE-SW.
Suggested Citation
Perez-Lopez, R., Giner-Robles, J.L., Martinez-Diaz, J., Rodriguez-Pascua, M., Bejar, M., Paredes, C., Gonzalez-Casado, J., 2007, Active tectonics on Deception Island (West-Antarctica): A new approach by using the fractal anisotropy of lineaments, fault slip measurements and the caldera collapse shape: U.S. Geological Survey Open-File Report 2007-1047-SRP-086, 4 p., https://doi.org/10.3133/ofr20071047SRP086.
ISSN: 2331-1258 (online)
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Active tectonics on Deception Island (West-Antarctica): A new approach by using the fractal anisotropy of lineaments, fault slip measurements and the caldera collapse shape |
| Series title | Open-File Report |
| Series number | 2007-1047-SRP-086 |
| DOI | 10.3133/ofr20071047SRP086 |
| Year Published | 2007 |
| Language | English |
| Publisher | U.S Geological Survey |
| Publisher location | Reston, VA |
| Description | 4 p. |
| Larger Work Type | Report |
| Larger Work Subtype | USGS Numbered Series |
| Larger Work Title | Antarctica: A Keystone in a Changinceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007 |
| Other Geospatial | Antarctica |
| Additional Online Files (Y/N) | N |