RT Journal Article
T1 Paleoliquefaction features on Tenerife (Canary Islands) inHolocene sand deposits
A1 González de Vallejo, Luis I.
A1 Tsige Beyene, Meaza
A1 Cabrera Pérez, Luis
AB On Tenerife, one of the Canary Islands, a series of clastic dikes and tubular vents is attributed to liquefaction of sediments during a high-intensity paleoearthquake. Geotechnical, geological, tectonic, and mineralogical investigations have been carried out to identify the soil composition and structure, as well as the geological processes operating in the area. Geochronological analysis has indicated an age ranging from 10,081F933 to 3490F473 years BP for the liquefaction features. The area in which these liquefaction features are found has undergone tectonic uplift and is affected by two faults. One of these faults was responsible for displacing the Holocene materials. The paleoearthquake responsible for this liquefaction has been analysed in terms of its peak ground acceleration (pga) and magnitude by back calculation analysis based on the cyclic stress and Ishihara methods. A range of 0.22–0.35g was obtained for the pga, with the value of 0.30g being selected as most representative. From this, an earthquake-modified Mercalli intensity of IMM = IX was estimated for the liquefaction site. The magnitude-bound method and energy-based approaches were used to determine the magnitude of the paleoearthquake, providing a moment magnitude M in the range of 6.4–7.2; M = 6.8 is taken as the representative figure.
PB Elsevier
SN 0013-7952
YR 2005
FD 2005
LK https://hdl.handle.net/20.500.14352/49986
UL https://hdl.handle.net/20.500.14352/49986
LA eng
DS Docta Complutense
RD 2 may 2024