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Engineering Geology and Geomorphology of Glaciated and Periglaciated Terrains: Engineering Group Working Party Report
Author(s)
J. S. Griffiths;
J. S. Griffiths
University of Plymouth, UK
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C. J. Martin
C. J. Martin
BP Exploration Operating Company Ltd, UK
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The Geological Society of London
Volume
28
Copyright:
This content is available without a subscription. It may not be altered in any way and proper attribution is required.
ISBN electronic:
9781786203038
ISBN print:
9781786203021
Publication date:
January 01, 2017
Book Chapter
Chapter 5: Periglacial and permafrost ground models for Great Britain
Author(s)
J. B. Murton
Permafrost Laboratory, Department of Geography, University of Sussex, Brighton BN1 9QJ, UK
;
J. B. Murton
*
Correspondence: j.b.murton@sussex.ac.uk
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C. K. Ballantyne
School of Geography and Sustainable Development, University of St Andrews, St Andrews, Fife KY16 9AL, UK
C. K. Ballantyne
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-
Published:January 01, 2017
Abstract
Periglacial environments are characterized by cold-climate non-glacial conditions and ground freezing. The coldest periglacial environments in Pleistocene Britain were underlain by permafrost (ground that remains at or below 0°C for two years or more), while many glaciated areas experienced paraglacial modification as the landscape adjusted to non-glacial conditions. The growth and melt of ground ice, supplemented by temperature-induced ground deformation, leads to periglacial disturbance and drives the periglacial debris system. Ice segregation can fracture porous bedrock and sediment, and produce an ice-rich brecciated layer in the upper metres of permafrost. This layer is vulnerable to melting and thaw consolidation,...
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Index Terms/Descriptors
- breccia
- Cenozoic
- deformation
- eolian features
- Europe
- fluvial features
- freezing
- glacial features
- glacial geology
- Great Britain
- ground ice
- ice
- landform evolution
- landscapes
- melting
- models
- periglacial environment
- periglacial features
- permafrost
- Pleistocene
- porous materials
- Quaternary
- thawing
- United Kingdom
- Western Europe
Latitude & Longitude
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