CGRG Bibliography of Canadian Geomorphology
Search Results
Author : Brookes, I. A.
Date : 2007.
Title : West Newfoundland rock glaciers.
Publication : CANQUA Ottawa 2007. Canadian Quaternary Association Conference, June 4-8, 2007. Carleton University, Ottawa, Ontario, Canada.
Issue :
Page(s) :
Abstract
Ten rock glaciers are identified in west Newfoundland highlands, situated on plateau margins or glacial valley-sides. Seven are in highly fractured mafic-ultramafic rocks of the Humber Arm Allochthon, two are in PC gneisses of the southern Long Range, and one is in late PC orthoquartzite of Gros Morne massif. Five are oriented between NW and NE; five are not, because of valley orientation. Six are of the talus type, two are ridged sackungen debris, two are distinctly thin spatulate deposits, issued from nivation chutes. Toe elevations vary from 75–350 m. Northern (or shaded) aspect, simple ridging, and short travel distance indicate topoclimatic settings conducive to a brief cryonival geomorphic regime, absent from neighbouring slopes of other aspect. No age data have been obtained. Features 4, 6, 8, 9, and 10 occupy valleys not connected to inland ice, and might represent LGM (+/-) cryonival activity. Features 1, 2, 3, 5, and 7 formed after deglaciation (
Bibliography of Canadian Geomorphology