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(Article of periodic en Anglais - 2011)

Document title

Morphotectonics of the Concud Fault (Iberian Chain, Spain) : comparing geomorphic and geologic indices of activity of an intraplate extensional fault

Authors(s) and Affiliation(s)

LAFUENTE P. (1) ; LAMELAS T. (2) ; SIMÓN J.L. (1) ; SORIANO M.A. (1) ;
(1) Dep. Ciencias de la Tierra, Fac. Ciencias, Zaragoza, ESPAGNE
(2) Dep. Geografía y Ordenacíon del Territorio, Univ., Zaragoza, ESPAGNE

Abstract

The results of geomorphic analysis of the Concud fault-generated mountain front (central Iberian Chain, Spain) are introduced into classifications of fault activity proposed by previous authors, and compared with slip rates calculated from geologic markers. The Concud fault is an extensional structure active since the mid Pliocene times. The geomorphic indices, together with qualitative features of the escarpment and piedmont landscape, indicate ‘moderate’ to ‘rapid’ fault activity. The range of slip rates estimated from such morphotectonic classification (0.03 to 0.5 mm/y) encloses the range calculated from offset Late Pliocene and Pleistocene stratigraphic markers (0.07 to 0.33 mm/y). Nevertheless, the highest potential slip rate (0.5 mm/y) clearly represents an overestimate : the mountain front could give the impression of an anomalously high level of activity owing to episodic rejuvenation caused by base level drop

Source

Article of periodic

published at : Geodinamica acta / ISSN 0985-3111

Editor : Taylor & Francis, Abingdon - ROYAUME-UNI (1987)

Millesime : 2011, vol. 24, no3-4 [pp. 107-122]

Bibliographic references : 63 ref.

Collation : 9 fig., 4 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 21088

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.3166/ga.24.107-122

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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