Hostname: page-component-745bb68f8f-l4dxg Total loading time: 0 Render date: 2025-01-10T06:17:58.718Z Has data issue: false hasContentIssue false
  • English
  • Français

IV.—On the Preservation of Deposits of Incoherent Materials under Till or Boulder-clay

Published online by Cambridge University Press:  01 May 2009

James Geikie
Get access Rights & Permissions [Opens in a new window]

Extract

Those who maintain that Till or Boulder-clay has not only originated but accumulated underneath glacier-ice may sometimes have felt puzzled to account for the preservation of beds of more or less incoherent materials below a deposit which they have so many cogent reasons for believing to be a true moraine profonde.

Type
Original Articles
Information
Geological Magazine , Volume 5 , Issue 2 , February 1878 , pp. 73 - 79
Copyright
Copyright © Cambridge University Press 1878

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

page 77 note 1 Canadian Journal, April, 1877.

page 78 note 1 It may reasonably be doubted whether interglacial deposits were always so very loose and incoherent at the time they were overridden by ice. My brother has suggested that when the ice-sheet advanced over a land-surface, the loose superficial deposits might be frozen so hard as to be capable of resisting a very considerable degree of glacial erosion.