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Sediments and landforms in an upland glaciated-valley landsystem: upper Ennerdale, English Lake District

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posted on 01.02.2010, 11:02 by David Graham, Michael J. Hambrey
The genesis of moraines associated with British glaciers of Younger Dryas age has proved controversial in recent years. A number of alternative hypotheses exist and, whilst it is generally accepted that such features are polygenetic in origin, some workers have argued that not all of the proposed mechanisms are valid. This paper seeks to explore these issues, using a case study from the English Lake District. A landsystems approach is adopted, integrating information at a variety of spatial scales to explain the development of the sediment-landform associations in upper Ennerdale. The evidence suggests that landform development resulted from a combination of icemarginal deposition and englacial thrusting. It is probable that thrusting resulted from flow compression against a reverse bedrock slope, combined with the confluence of ice from two separate source areas. It is argued that, whilst englacial thrust moraines may not be commonly associated with British Younger Dryas glaciers, under certain conditions englacial thrusting is an important process in landform development.

History

School

  • Social Sciences

Department

  • Geography and Environment

Citation

GRAHAM, D.J. and HAMBREY, M.J., 2007. Sediments and landforms in an upland glaciated-valley landsystem: upper Ennerdale, English Lake District. IN: Hambrey, M.J. ... et al, (eds.). Glacial Sedimentary Processes and Products: Special Publication 39 of the IAS. Malden, MA ; Oxford : IAS/Blackwell Publishing.

Publisher

Blackwell Publishing / © International Association of Sedimentologists

Version

AM (Accepted Manuscript)

Publication date

2007

Notes

This is a book chapter. Further details of this book can be found at: http://eu.wiley.com/WileyCDA/WileyTitle/productCd-1405183004.html

ISBN

9781405183000;1405183004

Language

en

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