CGRG Bibliography of Canadian Geomorphology
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Author : Batterson, M.J.; and Taylor, R.C.
Date : 1994
Title : Quaternary geology of the upper Humber River area, western Newfoundland
Publication : Current Research. Newfoundland Department of Mines and Energy, Geological Survey Branch, Report
Issue : 94-1:
Page(s) : 1-9
Abstract
Surficial geological mapping in the upper Humber River valley has shown that the area was affected by a single southward ice-flow event, from an ice centre in the Long Range Mountains. This flow merged with northwestward-flowing ice from the Topsail Hills to the south of Cormack, and the ice then flowed out to the coast through the Bonne Bay area. To the east of Birchy Ridge, which was also covered by ice derived from the north, ice flow was generally northward toward White Bay from a centre in the Topsail Hills. Most diamictons in the study area have characteristics consistent with deposition at the base of a glacier, probably as melt-out tills. The colour, texture and clast provenance of diamictons are mainly controlled by the underlying bedrock geology. Glaciofluvial deposits are confined to the Humber River valley and associated tributary valleys. Marine muds adjacent to the Humber River are found below 50 m asl, and these are commonly covered by Holocene fluvial or organic deposits. No evidence was found for proglacial lake sediments or deltas. Surficial mapping in this area has implications for mineral exploration by determining paleo ice-flow directions and suitable sampling media, and also for agricultural, water-resource and land-use planning by identifying surface and subsurface sediments and describing their physical characteristics.
Bibliography of Canadian Geomorphology