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http://hdl.handle.net/2122/988
Authors: | Perea, H.* Figueiredo, P. M.* Carner, J.* Gambini, S.* Boydell, K.* |
Title: | Paleoseismological data from a new trench across the El Camp Fault(Catalan Coastal Ranges, NE Iberian Peninsula) | Issue Date: | 2003 | Series/Report no.: | 5/46 (2003) | URI: | http://hdl.handle.net/2122/988 | Keywords: | paleoseismicity trenching normal fault Catalan Coastal Ranges El Camp Fault |
Subject Classification: | 04. Solid Earth::04.04. Geology::04.04.01. Earthquake geology and paleoseismology 04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoring |
Abstract: | The El Camp Fault (Catalan Coastal Ranges, NE Iberian Peninsula) is a slow slipping normal fault whose seismic potential has only recently been recognised. New geomorphic and trench investigations were carried out during a training course across the El Camp Fault at the La Porquerola alluvial fan site. A new trench (trench 8) was dug close to a trench made previously at this site (trench 4). With the aid of two long topographic profiles across the fault scarp we obtained a vertical slip rate ranging between 0.05 and 0.08 mm/yr. At the trench site, two main faults, which can be correlated between trenches 8 and 4, make up the fault zone. Using trench analysis three paleoseismic events were identified, two between 34.000 and 125.000 years BP (events 3 and 2) and another event younger than 13 500 years BP (event 1), which can be correlated, respectively, with events X (50.000- 125.000 years BP), Y (35.000-50.000 years BP) and Z (3000-25.000 years BP). The last seismic event at the La Porquerola alluvial fan site is described for the first time, but with some uncertainties. |
Appears in Collections: | Annals of Geophysics |
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