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Micro-fracture patterns in Deception Island, Western Antarctica

dc.contributor.authorGonzález Casado, J. M.
dc.contributor.authorLópez Martínez, Jerónimo
dc.contributor.authorGiner Robles, J. L.
dc.contributor.authorDurán Valsero, Juan José
dc.contributor.authorGumiel Martínez, Pablo
dc.description.abstractThe micro fracture patterns in Deception Island, an active shield volcano located in (he 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-5W, 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). All 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 measureden_US
dc.publisherSociedad Geológica de Españaen_US
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.subject.otherFracture analysisen_US
dc.subject.otherActive stress fielden_US
dc.subject.otherShield volcanoen_US
dc.subject.otherDeception Islanden_US
dc.titleAnálisis de la microfracturación en la Isla Decepción, Antártida Occidentalen_US
dc.titleMicro-fracture patterns in Deception Island, Western Antarcticaeng

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