An estimation of the elastic thickness of the lithosphere in the Canary Archipelago using admittance function

Details An estimation of the elastic thickness of the lithosphere in the Canary Archipelago using admittance function An estimation of the elastic thickness of the lithosphere in the Canary Archipelago using admittance function

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21.2649d&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 21, no. 24, p. 2649-2652

Physics

13

Atlantic Ocean, Canary Islands, Elastic Properties, Lithosphere, Plates (Tectonics), Thickness, Bathymeters, Estimates, Gravimetry, Gravity Anomalies

Scientific paper

A recent compilation of shipborne gravity and bathymetry data has been used to determine the Effective Elastic Thickness (EET) of the lithosphere beneath the Canary Island volcanic complex by means of the admittance technique. As a first approach, we have computed the admittance, which is intepreted in terms of isotropic elastic plate thickness, with an EET of 23 km. Nevertheless, the proximity of the West African Continental Margin (WACM), together with the lateral variability in lithosphere structure in part caused by the large volcanic history of the Canaries, require a slightly different approach. To minimize the influence of the margin and to check whether or not any significant variation in EET occurs related to the known Canary hotspot, we have computed the admittance following the isochron lines. The results show a higher EET (35 km) than that obtained by the first approach but slightly smaller than that predicted by the cooling plate model.

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