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Quantitative particle size, microtextural and outline shape analyses of glacigenic sediment reworked by paraglacial debris flows

Auteur(s) et Affiliation(s)

CURRY, A.M.
Dep. of Geography and Land Management, Royal Univ., Phnom Penh, Cambodge
PORTER, P.R.
Division of Geography and Environmental Science, Univ. of Hertfordshire, Hatfield, Royaume-Uni
IRVINE-FYNN, T.D.L.
Dept. of Geography, Univ., Sheffield, Royaume-Uni
REES, G.
Scott Polar Research Inst., Dept. of Geography, Univ., Cambridge, Royaume-Uni
SANDS, T.B.
Division of Geography and Environmental Science, Univ. of Hertfordshire, Hatfield, Royaume-Uni
PUTTICK, J.
Division of Geography and Environmental Science, Univ. of Hertfordshire, Hatfield, Royaume-Uni


Description :
Particle size analysis and scanning electron microscopy have been used with some success to differentiate sediments sampled from varying geomorphological environments. In the paraglacial environment, however, discrimination of paraglacially reworked deposist from in situ glacigenic deposits has proven to be problematic. The AA. consider till sediments that have been reworked by paraglacial debris flows and in situ, unreworked parent material, and apply a series of quantitative techniques in an attempt to discriminate samples from each environment on the basis of particle-size and micro-textural characteristics. Differentiating glacial from paraglacial deposits is likely to yield the most reliable results where rigorous statistical analyses are combined with a wide range of sedimentological and geomorphological techniques.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2009, vol. 34, n°. 1, p. 48-62, nombre de pages : 15, Références bibliographiques : 1 p.

Date :
2009

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley

Langue :
Anglais
Droits :
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