CGRG Bibliography of Canadian Geomorphology
Search Results
Author : Duk-Rodkin, A.; and Hughes, O.L.
Date : 1994
Title : Tertiary-Quaternary drainage of the pre-glacial Mackenzie basin/ lejandra Duk-Rodkin and Owen L. Hughes.
Publication : Quaternary International
Issue : 22/23:
Page(s) : 221-241
Abstract
Pre-glacial drainage in the northwestern Mackenzie Region was established in early Tertiary time, with the uplift of the mountains during the Laramide Orogeny, and persisted until near the end of the Pleistocene. Rivers arose in the Mackenzie and Richardson mountains and followed a generally eastward direction across piedmont surfaces from the mountains towards the plains. The evidence to support this hypothesis includes geomorphology, provenance of sediments, reconstruction of paleo-surfaces and stratigraphy. Two major drainage systems developed –– one to the Atlantic Ocean and another to the Arctic Ocean. The Atlantic drainage is composed of the northwestern tributaries of an integrated drainage system that flowed towards Hudson Bay. Traces of this drainage are found in the Canyon Ranges of the Mackenzie Mountains, Iroquois upland and in the Norman Range of the Franklin Mountains. The Arctic drainage included two main basins –– the Porcupine Basin that drained from west to east across the Richardson Mountains and the Anderson basin that included the Peel and Snake rivers as its tributaries. Late Wisconsinan Laurentide glaciation deranged these drainage systems establishing the Porcupine River as a tributary of the Yukon River and integrating the Tertiary drainage systems into the Mackenzie River system flowing to the Arctic Ocean.
Bibliography of Canadian Geomorphology