CGRG Bibliography of Canadian Geomorphology
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Author : Brooks, G.R.; and Grenier, A.
Date : 2001.
Title : Late Holocene pollen stratigraphy of Lake Louise, Manitoba.
Publication : Geological Survey of Canada, Current Research
Issue : 2001-B1.
Page(s) : 14 p.
Abstract
The late Holocene pollen stratigraphy of Lake Louise, Manitoba, consists of two zones, zone 1 from 35 cm to 64.5 cm, and zone 2 extending from 0 to 30 cm deep; the transition from zone 1 to zone 2 occurs between sampling points at depts of 30 to 35 cm. Zone 1 predates the establishment of European agricultural practices and is interpreted to resemble an open oak savannah community, but with the oak present marginal to the lake and nearby Red River channel rather than being dispersed as an open forest. Within zone 2, the rise at 30 cm of Ambrosia, Liguliforae, Cruciferae, and cereal species of Granminea is interpreted to represent large-scale land disturbance caused by the introduction of European agricultural practices during the late 1`870s and early 1880s. Chronological data suggest and increase of about ten times ion the sedimentation rate in Lake Louise within zone 2 relative to zone 1.
Bibliography of Canadian Geomorphology