Hello, my name is Alberto Carballo and I am finishing my PhD in
the Institute of Earth Sciences Jaume Almera (CSIC). Since a long
time ago the geologists have been studying the Earth's
interior structure, revealing it's formed by spherical shells, like an onion.
The lithosphere (the solid outer part of the Earth) of the Iberia has been the subject of numerous geological and geophysical studies in the last decades. Therefore, the aim of my work is to obtain a more reliable
lithosphere image along a 1065-km-long transect, crossing the entire
Iberian plate in N-S direction, using a
software which combines elevation, gravity, geoid, heat
flow and mantle seismic velocities. The method follows a forward scheme in which the crustal geometry is
constrained from previous seismic studies, and the lithosphere mantle
geometry and composition have been changed according to the geodynamic
setting, petrological data and mantle seismic velocities models until the best fit is
reached.
The
results highlight the lateral variations in the topography of the
lithosphere-asthenosphere boundary (LAB), suggesting a strong
lithospheric mantle strain below the Cantabrian and Betic mountain
belts. Minimum value of around 60 km is found beneath the Alboran
Basin.
Contribution of Team Consolider-Ingenio 2010 TOPO-IBERIA (CSD2006-00041) and GASAM/TopoMed
(CGL2008-03474-E/BTE/07-TOPO-EUROPE-FP-006)
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