Relict slopes and palaeovalleys at Taracena-Guadalajara (central Spain): Geomorphological and palaeogeographical interpretation
| Autor: | Virginia Rubio-Fernández, Rosario García Giménez, José Luis Peña-Monné, María Marta Sampietro-Vattuone |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
010506 paleontology
Pleistocene QUATERNARY 010502 geochemistry & geophysics Oceanography Fault scarp Geociencias multidisciplinaria 01 natural sciences law.invention Ciencias de la Tierra y relacionadas con el Medio Ambiente Paleontology TALUS FLATIRON law OSL DATING Glacial period Radiocarbon dating Ecology Evolution Behavior and Systematics Holocene 0105 earth and related environmental sciences Earth-Surface Processes Geografía Física Scarp retreat PALEOENVIRONMENTS Quaternary Geology CIENCIAS NATURALES Y EXACTAS Chronology GEOARCHAEOLOGY |
| Popis: | Relict talus are of great interest for the reconstruction of Quaternary paleoenvironments. In this study, a special type of talus developed in the central zone of the Iberian Peninsula is analyzed, which we will refer to as talus-palaeovalley alignments. They constitute talus sequences that conserve the intermediate paleovalleys, arranged in parallel alignments, and separated by the tributary streams of the Henares River. This special arrangement could explain the accelerated transformation of the Pleistocene talus, with very much higher scarp retreat rates than those recorded in the bibliography. The chronologies obtained through OSL in some of the six differentiated stages (S1-S6) are placed in relation with various climatic reconstructions of the Pleistocene and, especially with the glacial phases of the Pyrenees, with which they show good temporal correlations. A further two stages of talus flatirons (S7 and S8) were recorded, which developed during the Holocene, both at the foot of older talus. Independent accumulations also formed at the foot of the main scarps (Muela de Alarilla and Valdenoches). The chronology provided by archaeological remains and radiocarbon dating placed their formation in the Iron Age Cold Epoch and the Little Ice Age (LIA), respectively. Fil: Peña Monné, Jose Luis. Universidad de Zaragoza. Facultad de Filosofía y Letras; España Fil: Rubio Fernández, V.. Universidad Autónoma de Madrid; España Fil: Sampietro Vattuone, Maria Marta. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Laboratorio de Geoarqueología; Argentina Fil: Garcíav Giménez, R.. Universidad Autónoma de Madrid; España |
| Databáze: | OpenAIRE |
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