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The 2\u2010D inversion model shows the resistivity structure of the continental crust up to 10\u00a0km depth, heretofore unavailable for this region of the Variscan Orogen. The MT model reveals a wavy structure separating a conductive upper layer underlain by a resistive layer, thus picturing the two main tectonic blocks of a large\u2010scale D2 extensional shear zone (i.e., Pinhel shear zone). The upper layer represents a lower grade metamorphic domain that includes graphite\u2010rich rocks. The lower layer consists of high\u2010grade metamorphic rocks that experienced partial melting and are associated with granites (more resistive) emplaced during crustal thinning. The wavy structure is the result of superimposed crustal shortening responsible for the development of large\u2010scale D3 folds (e.g., Marofa synform), later deflected and refolded by a D4 strike\u2010slip shear zone (i.e., Juzbado\u2010Penalva do Castelo shear zone). The later contribution to the final structure of the crust is marked by the intrusion of postkinematic granitic rocks and the propagation of steeply dipping brittle fault zones. Our study demonstrates that MT imaging is a powerful tool to understand complex crustal structures of ancient orogens in order to design future prospecting surveys for mineral deposits of economic interest.<\/jats:p>","DOI":"10.1002\/2017tc004593","type":"journal-article","created":{"date-parts":[[2017,11,27]],"date-time":"2017-11-27T05:02:49Z","timestamp":1511758969000},"page":"3065-3080","source":"Crossref","is-referenced-by-count":5,"title":["Magnetotelluric Imaging of the Lithosphere Across the Variscan Orogen (Iberian Autochthonous Domain, NW Iberia)"],"prefix":"10.1029","volume":"36","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8491-3904","authenticated-orcid":false,"given":"J.","family":"Alves Ribeiro","sequence":"first","affiliation":[{"name":"Instituto Dom Luiz, Faculdade de Ci\u00eancias Universidade de Lisboa  Lisbon Portugal"}]},{"given":"F. A.","family":"Monteiro\u2010Santos","sequence":"additional","affiliation":[{"name":"Instituto Dom Luiz, Faculdade de Ci\u00eancias Universidade de Lisboa  Lisbon Portugal"},{"name":"Departamento de Engenharia Geogr\u00e1fica, Geof\u00edsica e Energia Universidade de Lisboa  Lisbon Portugal"}]},{"given":"M. F.","family":"Pereira","sequence":"additional","affiliation":[{"name":"Instituto Dom Luiz, Faculdade de Ci\u00eancias Universidade de Lisboa  Lisbon Portugal"},{"name":"Departamento Geoci\u00eancias, ECT Universidade de \u00c9vora  \u00c9vora Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0379-7970","authenticated-orcid":false,"given":"R.","family":"D\u00edez Fern\u00e1ndez","sequence":"additional","affiliation":[{"name":"Instituto Dom Luiz, Faculdade de Ci\u00eancias Universidade de Lisboa  Lisbon Portugal"},{"name":"Departamento de Geodin\u00e2mica Universidad Complutense de Madrid  Madrid Spain"}]},{"given":"\u00cd.","family":"Dias da Silva","sequence":"additional","affiliation":[{"name":"Instituto Dom Luiz, Faculdade de Ci\u00eancias Universidade de Lisboa  Lisbon Portugal"}]},{"given":"C.","family":"Nascimento","sequence":"additional","affiliation":[]},{"given":"J. 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