DOI: 10.1016/j.quascirev.2016.05.027
Scopus记录号: 2-s2.0-85006340173
论文题名: Chronology of fluvial terrace sequences for large Atlantic rivers in the Iberian Peninsula (Upper Tagus and Duero drainage basins, Central Spain)
作者: Silva P.G. ; Roquero E. ; López-Recio M. ; Huerta P. ; Martínez-Graña A.M.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2017
卷: 166 起始页码: 188
结束页码: 203
语种: 英语
英文关键词: Central Spain
; Duero
; Fluvial terraces
; Geochronology
; Statistic chronofunctions
; Tagus
Scopus关键词: Geochronology
; Regression analysis
; Central Spain
; Climatic conditions
; Duero
; Fluvial terraces
; Iberian Peninsula
; Multiple regression analysis
; Order polynomials
; Tagus
; Catchments
英文摘要: This work analyses the chronology of fluvial terrace sequences of the two most important fluvial basins from central Spain draining to the Atlantic Ocean (Upper Tagus and Duero drainage basins). Both basins evolved under similar Mediterranean climatic conditions throughout the Pleistocene and present comparable number of fluvial terraces (16–17) after excluding the higher terrace levels of the Tagus (T1–T5) entrenched in the Raña surface. These higher “rañizo terraces” was formed in response to fan-head trenching in this high alluvial piedmont (+220 m) and therefore not properly controlled by Quaternary fluvial downcutting. The study accomplishes the implementation of multiple regression analyses for terrace height-age relationships. To transform relative terrace heights above the present river thalwegs (i.e. +100 m) in numerical ages a “height-age transference function” has been developed on the basis of preliminary statistical geochronological approaches proposed for Central Spain. The resultant height-age transference function gather 73 published geochronological data for terrace sequences, featuring a 3rd Order Polynomial Function (R2 0.90). This function describes the overall trend of valley downcutting for the last c. 2.3 Ma in Central Spain and is used to assign numerical ages to terrace levels at different relative elevation. © 2016 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59210
Appears in Collections: 过去全球变化的重建
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作者单位: Dpto. de Geología, Universidad de Salamanca, E.P.S. Ávila, Hornos Caleros 50, Ávila, Spain; Dpto. de Edafología, E.T.S.I. Agrónomos, Universidad Politécnica, Ciudad Universitaria s/n, Madrid, Spain; Dpto. Prehistoria y Arqueología, Fac. Filosofía y Letras, Universidad Autónoma de Madrid, Spain
Recommended Citation:
Silva P.G.,Roquero E.,López-Recio M.,et al. Chronology of fluvial terrace sequences for large Atlantic rivers in the Iberian Peninsula (Upper Tagus and Duero drainage basins, Central Spain)[J]. Quaternary Science Reviews,2017-01-01,166