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(Article of periodic en Anglais - 2014)

Document title

Glacial crushing of limestone and the production of carbonate-rich silts in a Pleistocene glaciofluvial system : a potential source of loess in Southern Europe

published at : Glacial and paraglacial environments

Authors(s) and Affiliation(s)

ADAMSON K.R. (1 2) ; WOODWARD J.C. (3) ; HUGHES P.D. (3) ;
(1) Department of geography, Queen Mary, University of London, London, ROYAUME-UNI
(2) Dept. Geography, School of the Science and the Environment, Metropolitan Univ., Manchester, ROYAUME-UNI
(3) Dept. Geography, School of Environment, Education and Development, Univ., Manchester, ROYAUME-UNI

Abstract

The AA. explore the modification of limestone bedrock and fine-grained sediment within the Pleistocene glacial and proglacial environments of the Orjen massif in western Montenegro. They have characterised the fine-grained components of till and outwash using lithological and particle size data : 2 main types of fine-grained outwash sediment have been recognised and each is associated with a distinctive meltwater route. Fine-grained sediments deposited downstream of bedrock gorges (type 1 meltwater route) typically display a bimodal particle size distribution, where the carbonate silt fraction has been depleted and non-carbonate silts become dominant. Fine-grained outwash deposits from directly in front of the former ice margin (type 2 meltwater route) show unimodal particle size distributions which more closely resemble the grain size characteristics of the glacial till. The AA. argue that the fine-grained sediment exported from glaciated limestone catchments during the cold stages of the Pleistocene formed an important source of the carbonate-rich loess in this region

Source

Thematical fascicle

published at : Geografiska annaler. Series A. Physical geography / ISSN 0435-3676 / CODEN GAPGAP

Editor : Svenska sällskapet för antropologi och geografi, Stockholm - SUEDE (1965)

Millesime : 2014, vol. 96, no 3 [pp. 339-356]

Bibliographic references : 41 ref.

Collation : fig., tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 2704 A

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1111/geoa.12054

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