RT Journal Article
T1 Análisis de la microfacturación en la Isla Decepción, Antártida Occidental
T2 Micro-fracture patterns in Deception Island, Western Antarctica
A1 González Casado, José Manuel
A1 López Martínez, Jerónimo
A1 Giner Robles, Jorge Luis
A1 Durán Valsero, Juan José
A1 Gumiel Garrido, P.
AB The micro fracture patterns in Deception Island, an active shield volcano located in the Bransfield Strait, Antarctic Peninsula region, are studied here for the first time. 143 faults have been measured in five sites along the island, three main trends NE-SW, E-W and NW-SE have been established. The average trend of all the measured faults is N46°E. The faults are several meters long and produce small displacement of the pyroclastic layers (up to some tens of centimetres). AII of them have a dip higher than 60°, showing in general a normal sense of movement. This orientation, subparallel to the Bransfield Basin axis, seems to be related to the caldera formation as well as with the subsequent tectonic deformation. These faults are related to a NW-SE extension, compatible with the tectonic setting of this area. The NW-SE faults show directional movement, then they represent, probably, transfer faults of the former group. A small set of normal faults trending E-W has also been measured.
PB Sociedad Geológica de España
SN 0213-683X
YR 1999
FD 1999
LK https://hdl.handle.net/20.500.14352/110537
UL https://hdl.handle.net/20.500.14352/110537
LA spa
NO González Casado, J.M. et al. (1999): «Análisis de la microfacturación en la Isla Decepción, Antártida Occidental.», Geogaceta, 26, pp. 27-30.
NO Comisión Interministerial de Ciencia y Tecnología (España)
DS Docta Complutense
RD 17 abr 2025