CGRG Bibliography of Canadian Geomorphology
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Author : Haldorsen, S.; and Shaw, J
Date : 1982.
Title : The problem of recognizing melt out till
Publication : Boreas
Issue : 11(3):
Page(s) : 261-277.
Abstract
Deposition of till by melt-out was described as early as a hundred years ago, and today the criteria which provide evidence to support an interpretation of melt-out till are available. The most important criteria are (P1) the presence of unlithified, sorted and stratified sediments within or interstratified with the till(s). (P2) the presence of a statistically preferred orientation of stone axes closely related to ice-flow condition, and (P3) a configuration of till with a recognizable textural or lithological property closely related to the configuration of englacial debris with the same property. The Omnsbreen Glacier in central Norway provides important evidence with regard to P1. Based on P1 and P2, and on regional aspects, tills composing ridges transverse to the direction of ice flow are interpreted as melt-out till and flow till. The interpretation of till genesis must be based on the balance of probability, as absolute proof is unrealistic in most cases.
Bibliography of Canadian Geomorphology