Criterios geomorfológicos sobre actividad tectónica reciente a lo largo de la Costa Recta, Isla Decepción (Antártida Occidental)
- R. Pérez López 1
- F. Fernández Ibáñez 2
- J.J. Martínez Díaz 3
- C. Paredes 4
- J.L. Giner 3
- A. Caselli 5
-
1
Universidad CEU San Pablo
info
- 2 Instituto Andaluz de Geofísica
-
3
Universidad Complutense de Madrid
info
-
4
Universidad Politécnica de Madrid
info
-
5
Universidad de Buenos Aires
info
ISSN: 1576-5172
Datum der Publikation: 2004
Titel der Ausgabe: IV Congreso Geológico de España (Zaragoza, 12-15 julio, 2004)
Nummer: 6
Seiten: 179-182
Art: Artikel
Andere Publikationen in: Geotemas (Madrid)
Zusammenfassung
Several active tectonic evidences are observed along Costa Recta, located eastward of Deception Island (western Antarctica): marine terraces and fluvial streams cutting a relict glacier. The height of both landforms decrease southward from Macaroni Point, appointing to a tilt movement across a fault plane. Fault planes were measured at Macaroni Point and Baily Head, with a main NNWSSE orientation, similar to the Costa Recta strike. From several scales o f measure, the orientation of the beach was established in two principal segments: N168QE, and N173QE. On the other hand, the beach and glacier dynamics and sedimentary deposits were studied. According to the morpho-tectonic analysis, we conclude that the Costa Recta beach is a retreat scarp of a submarine fault oriented NNW-SSE and located in the Bransfield Strait, although a geophysical study of the marine bottom is needed to map the fault trace in an accurate way.