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(Article of periodic en Anglais - 2010)

Document title

Testing lake sediment and dendrogeomorphic proxies for Little Ice Age environmental change in the upper Fraser River area, British Columbia, Canada

Authors(s) and Affiliation(s)

DIRSZOWSKY R.W. (1) ; DESLOGES J.R. (2) ;
(1) Dep. of Geography and Dep. of Biology, Laurentian Univ., Sudbury, CANADA
(2) Dep. of geography, Univ., Toronto, CANADA

Abstract

This study assesses Little Ice Age (LIA) lake sediment morphological and geochemical records and moraine chronologies in the upper Fraser River watershed, British Columbia, to resolve differences in paleoenvironmental interpretation and to clarify sediment production and sediment delivery processes within alpine geomorphic systems. Moose Lake contains a partially varved record indicating variable rates of accumulation during the last millennium that, in general, coincide with previously documented LIA glacial advances in the region and locally. Dendrochronological assessment of forefield surfaces in the headwaters of the catchment (Reef Icefield), increases in varve thickness within 8 Moose Lake sediment cores and elevated carbonate concentrations confirm glacial activity c. ad 1200, ad 1500, ad 1750, and ad 1900

Source

Article of periodic

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

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

Millesime : 2010, vol. 92, no3 [pp. 393-410]

Bibliographic references : 2 p.

Collation : 10 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 2704 A

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1111/j.1468-0459.2010.00403.x

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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