000168693 001__ 168693
000168693 005__ 20260218132340.0
000168693 0247_ $$2doi$$a10.3166/ga.24.107-122
000168693 0248_ $$2sideral$$a98880
000168693 037__ $$aART-2011-98880
000168693 041__ $$aeng
000168693 100__ $$aLafuente, Paloma
000168693 245__ $$aMorphotectonics of the Concud Fault (Iberian Chain, Spain): Comparing Geomorphic and Geologic Indices of Activity of an Intraplate Extensional Fault
000168693 260__ $$c2011
000168693 5060_ $$aAccess copy available to the general public$$fUnrestricted
000168693 5203_ $$aThe 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. It gives rise to a 60 to 120 m high mountain front, where footwall rocks belonging to the Triassic and Jurassic (north-western sector) and Miocene (south-eastern sector) crop out. Conspicuous triangular facets are preserved on Jurassic rocks of the central sector, while short, generally non-incised alluvial fans make the piedmont. The value of the Mountain-front sinuosity index is Smf = 1.24 for the whole mountain front (1.17 and 1.32, respectively, for both segments showing distinct footwall lithology), as obtained by the most conservative procedure. Average valley floor width/height ratios calculated for seventeen gullies crossing the fault are Vf = 0.30 (250 m upstream from the fault trace) and Vf = 0.22 (500 m upstream). These 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.
000168693 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000168693 590__ $$a0.471$$b2011
000168693 591__ $$aGEOSCIENCES, MULTIDISCIPLINARY$$b153 / 170 = 0.9$$c2011$$dQ4$$eT3
000168693 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000168693 700__ $$0(orcid)0000-0002-8954-7517$$aLamelas, María Teresa$$uUniversidad de Zaragoza
000168693 700__ $$0(orcid)0000-0003-1412-5245$$aSimón, José Luis$$uUniversidad de Zaragoza
000168693 700__ $$0(orcid)0000-0002-2842-517X$$aSoriano, María Asunción$$uUniversidad de Zaragoza
000168693 7102_ $$13006$$2430$$aUniversidad de Zaragoza$$bDpto. Geograf. Ordenac.Territ.$$cÁrea Geografía Física
000168693 7102_ $$12000$$2427$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Geodinámica Externa
000168693 7102_ $$12000$$2428$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Geodinámica Interna
000168693 773__ $$g24, 3-4 (2011), 107-122$$pGeodin. acta$$tGEODINAMICA ACTA$$x0985-3111
000168693 8564_ $$s5016632$$uhttps://zaguan.unizar.es/record/168693/files/texto_completo.pdf$$yPostprint
000168693 8564_ $$s605329$$uhttps://zaguan.unizar.es/record/168693/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000168693 909CO $$ooai:zaguan.unizar.es:168693$$particulos$$pdriver
000168693 951__ $$a2026-02-18-12:27:20
000168693 980__ $$aARTICLE