Facies control on seismites in an alluvial–aeolian system: The Pliocene dunefield of the Teruel half-graben basin (eastern Spain)

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dc.contributor.author Liesa, Carlos L.
dc.contributor.author Rodríguez López, Juan Pedro
dc.contributor.author Ezquerro Ruíz, Lope
dc.contributor.author Alfaro García, Pedro
dc.contributor.author Rodríquez Pascua, Miguel Ángel
dc.contributor.author Lafuente, Paloma
dc.contributor.author Arlegui, Luis
dc.contributor.author Simón Gómez, José Luis
dc.date.accessioned 2020-09-30T10:36:32Z
dc.date.available 2020-09-30T10:36:32Z
dc.date.issued 2016-10
dc.identifier.citation Sedimentary Geology, 2016, v. 344, 237-252 es_ES
dc.identifier.issn 0037-0738
dc.identifier.uri http://hdl.handle.net/20.500.12468/443
dc.description.abstract The recognition of seismically induced soft-sediment deformation structures (SSDS) in sedimentary successions characterized by different facies, and hence by different rheology, is challenging. This is the case for high porosity and high permeability aeolian facies interbedded with muddy wet interdune deposits and alluvial conglomerates and sandstones. Several types of SSDS have been studied in two exposures of the Upper Pliocene (2.9–2.6 Ma) sediments of a fault-bounded intracontinental aeolian dune field in the Teruel Basin (Iberian Chain, eastern Spain). Among SSDS, load and fluid-escape structures, apart from several animal tracks, have been recognized. Those structures show an irregular distribution through the studied stratigraphic sections, being scarce in homogenous aeolian sands and frequent in water-related facies. A detailed study of the distribution and geometry of SSDS and their relationships with respect to the stratigraphic architecture and facies has allowed a critical discrimination of trigger mechanisms, i.e. biological or physical overloading vs. earthquakes. The seismically induced structures are concentrated into seven deformed beds, showing an uneven lateral distribution and geometry closely controlled by the hosting sedimentary facies and their rheology. These seismites resulted from liquefaction during moderate earthquakes (estimated magnitude from 5.0 to 6.8). The most probable seismogenic source was the Sierra del Pobo normal fault zone, located 2 km to the East. Results show how an appropriate recognition of sedimentary facies is crucial to understand the lateral variability of seismites in sedimentary environments characterized by sharp facies changes. es_ES
dc.description.sponsorship Grupo GeoTransfer, Universidad de Zaragoza, España es_ES
dc.description.sponsorship School of Applied Sciences, Faculty of Computing, Engineering and Science, University of South Wales, Reino Unido es_ES
dc.description.sponsorship Departamento de Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, España es_ES
dc.description.sponsorship Instituto Geológico y Minero de España, España es_ES
dc.language.iso en es_ES
dc.publisher Elsevier es_ES
dc.relation CGL2012-35662 es_ES
dc.relation CGL2011- 30153-C02-02 es_ES
dc.rights Acceso abierto es_ES
dc.subject Soft-sediment deformation es_ES
dc.subject Load structure es_ES
dc.subject Water-escape structure es_ES
dc.subject Liquefaction es_ES
dc.subject earthquake es_ES
dc.subject load structure es_ES
dc.subject Sierra del Pobo fault es_ES
dc.title Facies control on seismites in an alluvial–aeolian system: The Pliocene dunefield of the Teruel half-graben basin (eastern Spain) es_ES
dc.type Postprint es_ES
dc.relation.publisherversion https://www.sciencedirect.com/science/article/pii/S0037073816300628 es_ES
dc.description.funder Ministerio de Economía y Competitividad, España es_ES
dc.description.funder Gobierno de Aragón, España es_ES
dc.identifier.doi https://doi.org/10.1016/j.sedgeo.2016.05.009 es_ES
dc.coverage.spatialStudy Provincia Teruel, España es_ES

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