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(Article of periodic en Anglais - 2012)

Document title

Postglacial sediment budget of Chilliwack Valley, British Columbia

Authors(s) and Affiliation(s)

TUNNICLIFFE J. (1) ; CHURCH M. (1) ; CLAGUE J.J. (2) ; FEATHERS J.K. (3) ;
(1) Dep. of Geography, Univ. of British Columbia, Vancouver, CANADA
(2) Dep. of Earth Sciences, Simon Fraser Univ, BC, Burnaby, CANADA
(3) Dep. of Anthropology, Univ. of Washington, Seattle, ETATS-UNIS

Abstract

The AA. develop a quantitative framework to estimate the volume, sediment type, and fractional size distribution of legacy glacial materials in a large watershed in the North Cascade Mountains in south-western British Columbia. They present a chronology of sediment evacuation from the valley and deposition in the outlet fan, based on infrared stimulated luminescence (IRSL) and 14C dating of river terraces and fan strata, respectively. The effects of paraglacial sedimentation in Chilliwack Valley were intensified through a major fall in valley base-level following ice retreat. The results of this integrated study provide a postglacial chronology and detailed sediment budget, accounting for long-term sorting of the original sediments, lag deposit formation in the mainstem, deposition in the outlet fan, and approximate downstream losses of suspended sediment and wash load

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, no12 [pp. 1243-1262]

Bibliographic references : 2 p.

Collation : 10 fig., 5 tabl., 3 annexes

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3229

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