Morfometría de la red de drenaje, tectónica activa y sismicidad instrumental en el borde occidental de Sierra Nevada (Cordilleras Béticas)
- J.M. Azañón 1
- A. Azor 1
- V. Pérez-Peña 1
- G. Booth-Rea 2
- J. Rodríguez-Fernández 1
- J. Delgado 3
- J.M. Carrillo 1
- F. Torcal 4
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1
Universidad de Granada
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2
GEOMAR Helmholtz Centre for Ocean Research Kiel
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3
Universidad de Jaén
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- 4 Univiversidad Pablo de Olavide
ISSN: 1576-5172
Year of publication: 2004
Issue Title: IV Congreso Geológico de España (Zaragoza, 12-15 julio, 2004)
Issue: 6
Pages: 135-138
Type: Article
More publications in: Geotemas (Madrid)
Abstract
The use of a number o f geomorphic indexes in Sierra Nevada suggests that recentmost and active tectonic activity is concentrated along its SW border. Moreover, a map of the SL-index shows maxima aligned along several bands of NW-SE orientation. Such alignments coincide with high seismicity lineaments, being interpreted as NW-SE oriented active fault zones. NW-SE oriented faults are common in the western border of Sierra Nevada, appearing as very steep highly segmented normal faults. These faults cut across all the tectonic -including M iocene extensional detachments- and lithological boundaries, being responsible for the present-day NE-SW oriented extensional deformation in this region.