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(Article of periodic en Anglais - 2012)

Document title

Delineating stratigraphic breaks at the bases of postglacial eolian dunes in central Alberta, Canada using a portable OSL reader

Authors(s) and Affiliation(s)

MUNYIKWA K. (1) ; BROWN S. (2) ; KITABWALLA Z. (1) ;
(1) Centre for Science, Univ., Alberta, Athabasca, CANADA
(2) Earth and Atmospheric Sciences, Univ. of Alberta, Edmonton, CANADA

Abstract

This paper presents luminescence profiling work carried out with the portable OSL reader in dune fields in central Alberta. Results presented as depth variations of feldspar derived infrared stimulated luminescence (IRSL) signals and predominantly quartz-generated post-IR blue OSL signals, show that luminescence profiling enables one to distinguish between eolian deposits that make up the dunes from the underlying non-eolian sands. The identification of such cryptostratigraphic interfaces is made possible by differences in the dosimetric histories of the sediments. The delineation of the dune bases allows targeted sampling that yields best luminescence age approximations for the initiation of postglacial eolian deposition in the region. Luminescence profiling of eolian sequences would also, in theory, permit the identification of depositional breaks of extended duration

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2012, vol. 37, no15 [pp. 1603-1614]

Bibliographic references : 1 p.

Collation : 8 fig., 4 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3261

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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