CGRG Bibliography of Canadian Geomorphology
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Author : Clague, J.J.; Hebda, R.J.; and Mathewes, R.W.
Date : 1990
Title : Stratigraphy and paleoecology of Pleistocene interstadial sediments, central British Columbia
Publication : Quaternary Research
Issue : 34:
Page(s) : 208-226
Abstract
Two exposures of organic-rich interstadial sediments in central British Columbia provide information on middle Wisconsinan environments and climates near the centre of the region covered by the late Wisconsinan Cordilleran Ice Sheet. Interstadial sediments at Bullion Pit overlie drift of early Wisconsinan or older age and underlie thick drift of late Wisconsinan age. Alluvium (or colluvium) and peat were deposited on the floor of the ancestral Quesnel River Valley 46 000-40 000 "SUP 14" C yr ago when the climate was colder and drier than today. Plant-rich pond sediments containing tephra layers and vertebrate remains are exposed between two drifts in a ravine at Mexican Hill, 30 km east of Quesnel. Although they could be contemporaneous with the Bullion Pit beds, it is more likely the nonglacial sediments at Mexican Hill were deposited after the warmest part of the last interglaciation but prior to 50 000 yr BP.
Bibliography of Canadian Geomorphology