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(Article of periodic en Anglais - 2013)

Document title

Till fabric and grain-size analysis of glacial sequences in the Upper Sil River Basin, Cantabrian Mountains, NW Spain

Authors(s) and Affiliation(s)

SANTOS-GONZÁLEZ J. (1) ; SANTOS J.A. (2) ; GONZÁLEZ-GUTIÉRREZ R.B. (1) ; REDONDO-VEGA J.M. (1) ; GÓMEZ-VILLAR A. (1) ;
(1) Dept. of Geography and Geology, Univ., León, ESPAGNE
(2) Center for Geographic Studies, Univ., Coimbra, PORTUGAL

Abstract

Fabric and grain-size analysis of 8 deposits present in the Upper Sil River Basin palaeoglacial system, located in the western portion of the Cantabrian Mountains, were used to interpret till types and to reconstruct the glacial paleoprocess history of this region. They are represented by lodgement, deformation, and melt-out tills. The first, representative of glacial advance stages, present cluster fabrics and are generally composed of poorly sorted and finer sediments. Melt-out and deformation tills, representative of stages of glacial stability followed by fast recession, present transitional to girdle fabrics and are composed of poorly sorted coarser sediments. These sequences, most of them located in the snout area of the Sil palaeoglacier, are important in the reconstruction of glacial dynamics. This palaeoglacial system was formed by multiple tributaries and had an extension of over 450 km2, with the Sil paleoglacier being 51 km long during its maximum glacial advance

Source

Article of periodic

published at : Physical geography / ISSN 0272-3646

Editor : Taylor & Francis, Abingdon - ROYAUME-UNI (1980)

Millesime : 2013, vol. 34, no6 [pp. 471-490]

Bibliographic references : 3 p.

Collation : 7 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 20106

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1080/02723646.2013.855989

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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