Web of Science: 3 citations, Google Scholar: citations
Deformation pattern around the Conejera fault blocks (Asturian Basin, North Iberian Margin)
Martínez Granado, Pablo (Universitat de Barcelona. Departament de Ciències de la Terra i de l'Oceà)
Tavani, Stefano (Università degli Studi di Napoli Federico II. Dipartimento di Scienze della Terra, dell'Ambiente e delle Risorse)
Carrera, N. (Universitat de Barcelona. Departament de Ciències de la Terra i de l'Oceà)
Muñoz, Josep Antón (Universitat de Barcelona. Departament de Dinàmica de la Terra i de l'Oceà)

Date: 2018
Abstract: The Asturian Basin is located on the coastline of the North Iberian Margin. This basin is dissected by long-lived E-, NE- and NW-striking faults that delineate a series of extensional fault blocks that became shortened during the Upper Cretaceous to Cenozoic Alpine convergence. In the Conejera cove, the NE-striking and SE-dipping Conejera Fault displays a remarkable example of contractional deformation, promoted by the mechanical contrast within the Lower to Middle Jurassic stratigraphic series. Field observations and structural analysis carried out in this study reveal: i) a first system of orthogonal cross-joints oblique to the Conejera Fault and other major onshore boundary faults, ii) a second system of meso-extensional faults parallel to the Conejera Fault, and developed by the reactivation and linkage of the orthogonal cross-joints and iii) a series of contractional folds, thrusts and pressure solution with a predominant NE to ENE trend. Observed relationships and structural analysis suggest an obliquity between the here inferred direction of the Late Jurassic-Early Cretaceous stretching (i. e. about N015E) and the onshore boundary faults, whereas the contractional structures are broadly parallel to the NE-striking Conejera Fault and suggest a roughly SSE- to SE-oriented Alpine convergence.
Rights: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l’obra i la creació d’obres derivades, fins i tot amb finalitats comercials, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l’obra original i es reconegui l’autoria de l’obra original. Creative Commons
Language: Anglès.
Document: article ; recerca ; publishedVersion
Subject: Asturian basin ; Conejera fault blocks ; Deformation patterns ; Reactivation ; North Iberian margin
Published in: Geologica acta, Vol. 16 Núm. 4 (December 2018) , p. 357-373 (Articles) , ISSN 1696-5728

Adreça original: https://www.raco.cat/index.php/GeologicaActa/article/view/347812
DOI: 10.1344/GeologicaActa2018.16.4.2


17 p, 7.4 MB

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Articles > Published articles > Geologica acta
Articles > Research articles

 Record created 2019-01-22, last modified 2019-10-15



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