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Crustal structure beneath the Iberian Peninsula and surrounding waters from active seismic experiments; a case example

AuthorsDiaz, J. ; Gallart Muset, Josep ; Carbonell, Ramón ; Córdoba, Diego
Issue Date5-Jun-2015
AbstractSince the 1970s, the lithospheric structure beneath the Iberian Peninsula and its continental margins has been extensively investigated using deep multichannel seismic reflection and refraction / wide-angle reflection profiling by different international research teams. The revision of the acquisition experiments and the interpretation methods used along those decades allows to get a beautiful insight on the evolution of active seismic methodologies, from the use of a limited number of analog dataloggers interpreted using 1D reflectivity methods, to the deployment of hundreds to thousands of digital equipments along a single profile inverted using ray theory. On the other hand, the compilation of all the available models reveals the seismic properties of the different tectonic domains sampled, which have a great geodynamical diversity. The investigated areas include crustal imbrication in the Pyrenean range, a large and relatively undisturbed Variscan Massif in the center of Iberia and areas of complex and still not completely understood geodynamics in the Alboran crust domain. This results in Moho depths ranging from around 10 km beneath the Atlantic to values exceeding 50 km in some parts of the Pyrenees or the Rif Cordillera. The compilation of the inferred Moho depths along the interpreted profiles has allowed to obtain a Moho depth model which has been extensively used to contrain numerical modeling studies at crustal and lithospheric scales in a key area of the Western Mediterranean.
Appears in Collections:(ICTJA) Comunicaciones congresos
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