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(Article of periodic en Anglais - 2008)

Document title

Proglacial sediment trapping in recently formed Silt Lake, Upper Lillooet Valley, Coast Mountains, British Columbia

Authors(s) and Affiliation(s)

SCHIEFER E. (1) ; GILBERT R. (2) ;
(1) Univ. of British Columbia, Geography dept., Vancouver, CANADA
(2) Queen's University, Dept. of Geography, Ontario, Kingston, CANADA

Abstract

The sedimentology of proglacial Silt Lake was assessed by lake sediment coring and monitoring of lacustrine processes during a late-summer period of high glacier melt to characterize sediment delivery from the heavily glacierized catchment and investigate the sediment trapping dynamics of this upland lake. A complete varve chronology was established for a distal basin of the lake which was exposed by Lillooet Glacier retreat between 1947 and 1962. The varve record showed decreasing sedimentation rates in the basin while the glacier retreated, and as the lake became free of ice contact in the early 1970s. Although recession has continued over recent decades, and glacier proximity to the lake has, therefore, continued decreasing, lacustrine sedimentation rates are now accelerating due to changing basin morphometry caused by delta progradation

Source

Article of periodic

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

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

Millesime : 2008, vol. 33, no10 [pp. 1542-1556]

Bibliographic references : 1 p.

Collation : 7 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1625

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2009
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