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Artículo

The connections between river terraces and slope deposits as paleoclimate proxies: The Guadalaviar - Turia sequence (Eastern, Iberia Chain, Spain)

Peña Monné, José Luis; Cunha, Pedro Proença; Sampietro Vattuone, Maria MartaIcon ; Bridgland, David R.; Murray, Andrew S.; Buylaert, Jan Pieter
Fecha de publicación: 01/2022
Editorial: Elsevier Science
Revista: Global and Planetary Change
ISSN: 0921-8181
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Geografía Física; Geociencias multidisciplinaria

Resumen

This study, focused on the well-exposed terrace deposits of the Guadalaviar and Turia rivers and associated slopes, provides a better understanding of the genetic connection between river-terrace sediments and slope accumulations in a setting influenced by temperate to cold (extraglacial) climates: the Sierra de Albarracín and Alfambra–Teruel depression (Iberian Chain, eastern Spain). The terrace system comprises seven levels, Qt1 to Qt7. In the two older levels (Qt2 and Qt3) lateral connections with thick stratified slope screes were observed. The lower terraces (Qt4 to Qt7) have less expressive slope deposits. New Optically Stimulated Luminescence (OSL) ages, using quartz-OSL and pIRIR290, were obtained from these Quaternary deposits. Qt2 is dated ~310 to 270 ky (Marine Isotope Stage (MIS) 9–8); Qt3 dates from ~175 to 150 ky (MIS 6), Qt4 from ~136 to 80 ky (MIS 5e–a) and Qt5 from ~23 ky (MIS 2); Qt6 has a tufa dated to 10–4.6 ky (early–middle Holocene), while Qt7 probably records the last 4 ky (late Holocene). The thick slope deposits connected with the upper parts of the Qt2 and Qt3 terraces were generated under the cold-climate conditions of MIS 8 and MIS 6, respectively. These are the oldest dated slope deposits connected with fluvial terraces documented in the Mediterranean region, their preservation and recognition thus being of considerable significance. Chronological correlation of the glacial–interglacial cycles of the Pyrenees with the marine isotope stages conforms to the interpretation of paleo-environmental data and sedimentary controls of terrace genesis in extraglacial fluvial basins under temperate- to cold-climatic conditions.
Palabras clave: FLUVIAL TERRACES , GLACIAL–INTERGLACIAL CYCLES , OSL DATING , QUATERNARY , STRATIFIED SCREES
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/151612
URL: https://www.sciencedirect.com/science/article/pii/S0921818121003131
DOI: http://dx.doi.org/10.1016/j.gloplacha.2021.103728
Colecciones
Articulos(CCT - NOA SUR)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - NOA SUR
Citación
Peña Monné, José Luis; Cunha, Pedro Proença; Sampietro Vattuone, Maria Marta; Bridgland, David R.; Murray, Andrew S.; et al.; The connections between river terraces and slope deposits as paleoclimate proxies: The Guadalaviar - Turia sequence (Eastern, Iberia Chain, Spain); Elsevier Science; Global and Planetary Change; 208; 1-2022; 1-17
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