CGRG Bibliography of Canadian Geomorphology
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Author : Campbell, I.D.
Date : 1987.
Title : Pollen-sedimentary environment relations and palynostratigraphy of the Ruby Range, Yukon Territory, Canada
Publication : Unpublished M.Sc. thesis. University of Ottawa, Ontario
Issue :
Page(s) :
Abstract
A 2.43 meter section from the Ruby Range, Yukon Territory, was analysed to develop a palynostratigraphy of the region. Surface moss polsters were collected to develop an understanding of the relations between pollen spectrum, vegetation, altitude, and distance from pollen source areas. Several experiments were conducted to further elucidate the relations of pollen spectra to sedimentary environments. These experiments were supplemented by two pollen diagrams from adjacent sites with differing sedimentology. The experiments indicate that pollen grains are highly resistant to most forms of mechanical degradation, with the exception of repeated wet-dry cycles. The experiments also indicate, confirmed by the pollen diagrams from adjacent sites, that selective pollen transport in runoff can strongly affect pollen spectra. The most easily transported pollen taxa are those with saccate grains. The palynostratigraphy of the Ruby Range over the last 4500 years shows short duration low amplitude fluctuations between two climatic states. One is the present cold semi-arid environment, and the other is a warmer and drier climate. These fluctuations can be correlated with previous work in the Grizzly Creek Basin (Y.T.) and north of the Malaspina Glacier (Alaska). Due to difficulties with the radiometric dating of the section, absolute dates for these fluctuations cannot be given with certainty.
Bibliography of Canadian Geomorphology