CGRG Bibliography of Canadian Geomorphology
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Author : Allen, S.M.; and Smith, D.J.
Date : 2004.
Title : Little Ice Age dendroglaciology and lichenometry at Bridge Glacier, British Columbia Coast Mountains.
Publication : Annual Meeting of the Western Division, Canadian Association of Geographers. March 18-20, 2004. Medicine Hat College, Medicine Hat, Alberta.
Issue :
Page(s) :
Abstract
Located on the eastern side of the Pacific Ranges west of Lillooet, Bridge Glacier is a prominent eastward flowing valley glacier whose source area is the Lilloett Icefields. Lichenometric investigations in 2002 and 2003 led to the identification of at least 7 distinct Little Ice Age (LIA) moraine-building events that occurred since ca. 1384 A.D. Dendroglaciological investigations and radiocarbon dating, of detrital boles and stumps located within gullies eroded into the proximal face of the southfacing lateral moraine and on the surface of a recently deglaciated nunatak, substantiate the extent of glaciation in the early-Little Ice Age. Standardized dendrochronological techniques are being used to crossdate the subfossil wood samples found at Bridge Glacier with living tree ring chronologies developed at nearby sites. It is anticipated this will lead to the development of crossdated tree ring chronology that will extend backwards 1800 years prior to the Bridge Advance at 1500 years. These long-term overlapping records of environmental change will be used to reconstruct a long-term mass balance history for Bridge Glacier that will be examined to describe the climate forcing mechanisms during the LIA and the pre-LIA Bridge Advance.
Bibliography of Canadian Geomorphology