Publication Date:
2019-11-04
Description:
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.
Description:
Published
Description:
JCR Journal
Description:
open
Keywords:
paleoseismicity
;
trenching
;
normal fault
;
Catalan Coastal Ranges
;
El Camp Fault
;
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
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
Format:
594834 bytes
Format:
application/pdf
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