P. Schmoldt, PhD - MTNet - DIAS

7. Geology of the Iberian Peninsula
Fig. 7.5.: Two regional models of the Betic Cordillera with different affiliation of the lower crust beneath the Internal Betics, and cause
for the subduction of the Iberian Plate beneath the boundary of Internal and External Betics as observable at the surface; from Pous
et al. [1999]. Upper panel: Lower crust beneath the Internal Betics belongs to the Iberian Plate and the subduction of the Iberian lower
crust is an intraplate structure. Lower panel: Lower crust beneath the Internal Betics belongs to the Alboran Domain and the Iberian
lower crust is the subducted beneath the Alboran Domain lower crust. A denotes the contact between Iberian and Alboran Domain.
Fig. 7.6.: Dimensionality of the subsurface along the magnetotelluric (MT) profile by Pous et al. [1999] using the WALDIM approach
(Sec. 4.4.3), with Niblett-Bostick depth-transformation (Sec. 6.3.1) and static shift corrections (Sec. 4.1.1); from Martí [2007]. +:
1D, : 2D or 3D/2D, : 3D/2D, : 3D.
in terms of initial geological setting and occurring trust kinematics (Fig. 7.8). Among
these, the authors favour the models containing two well-differentiated oceanic lithospheric
blocks (A1, A2 in Fig. 7.8) due to their better consistency with models based
on other geophysical data [e.g. Tubía et al., 1993; Platt et al., 2006]. However, results
from further studies are needed to verify the hypotheses regarding the origin of the conductive
body.
Rosell et al. [2010] extended the work by Martí et al. [2009a] by re-recording previous
sites with long-period MT instruments as well as collecting data at additional sites, located
mostly to the northeast and to the southwest of previous recordings (Fig. 7.2). This
enables the authors to carry out a 3D inversion for a larger area of the Betic Cordillera,
as well as for greater depth extent. At crustal depth, the inversion model by Rosell et al.
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