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EAS 1601

Current page content: A periglacial lake is a lake bordering a glacier. They are usually found along the fringes of large ice sheets. Former periglacial lakes are known to have existed as early as the Cryogenian in Australia.

Sources--Sept17
TEXTBOOKS:

Knight, Peter (2006). Glacier Science and Environmental Change. Malden, MA ; Oxford : Blackwell Pub.9781405100182

Sparks, B. W (1972). Geomorphology. London, Longman. 50671002651526

Wetzel, Robert (2001). Limnology. London, UK. Elsevier. ISBN - 10: 0-12-744760-1

Gutiérrez, Mateo (2005). Developments in Earth Surface Processes. Elsevier. Volume 8. Pgs 145-170. ISBN 9780444517944

JOURNALS:

Andrews, J. (1977). "Periglacial geomorphology."Journal of Glaciology, 18(78), 156-157. doi:10.3189/S0022143000021651. https://doi.org/10.3189/S0022143000021651

De Heinzelin, J. (1952). "Glacier Recession and Periglacial Phenomena in the Ruwenzori Range (Belgian Congo)." Journal of Glaciology, 2(12), 137-140. doi:10.3189/S0022143000034110 https://doi.org/10.3189/S0022143000034110

Haeberli, W., Kääb, A., Mühll, D., & Teysseire, P. (2001). "Prevention of outburst floods from periglacial lakes at Grubengletscher, Valais, Swiss Alps." Journal of Glaciology, 47(156), 111-122. doi:10.3189/172756501781832575 https://doi.org/10.3189/172756501781832575

Jennings, J. (1958). "Ice action on lakes." Journal of Glaciology, 3(23), 228-229. doi:10.3189/S0022143000024345 https://doi.org/10.3189/S0022143000024345

John, B. (1976). A. L. Washburn. "Periglacial processes and environments." Journal of Glaciology, 17(76), 359-360. doi:10.3189/S0022143000013654. https://doi.org/10.3189/S0022143000013654

Sparrow, G. (1967). "Pleistocene Periglacial Topography in Southern Africa." Journal of Glaciology, 6(46), 551-559. doi:10.3189/S0022143000019766 https://doi.org/10.3189/S0022143000019766

SEPT 23
Made changes/additions to periglacial lake page.

OCT 11

Lead section

Article 2 plus paragraphs

References 2 plus new sources

OCT 18
A periglacial lake is a lake bordering a glacier, usually found along the fringes of large ice sheets.

Periglacial Zone
Periglaciation suggests an environment located on the margin of past glaciers. It has also been attributed to a climate with a tundra-like vegetation with a permanently frozen subsoil. Usually, the term is taken in the latter sense, but periglacial is used in the former definition when discussing periglacial lakes.

Freeze and thaw cycles influence landscapes outside areas of past glaciation. Therefore, periglacial environments are anywhere that freezing and thawing modify the landscape in a significant manner. The tundra climate or periglacial zone is just outside of glaciated areas. The processes of erosion in these glacial-peripheral zones are markedly different than present processes, therefore their effects have been noted. Areas that are too dry for glaciation to occur but that display characteristics of oversteepened slopes, solifluction slumps and cirques indicate the presence of a periglacial zone. Chief actions in these zones include solifluction and frost-shattering processes, the effects of which can be seen in the south of the Bristol Channel.

Occurrence of Periglacial Lakes through Geologic Time
Former periglacial lakes are known to have existed as early as the Cryogenian period, though many were also formed in the Pleistocene period. Environments that have supported a periglacial zone or tundra climate include Siberia, Canada, Greenland, and southern Africa. The Pleistocene period is responsible for most of the known periglacial features in Britain.

Formation of Landforms in Glaciated Highlands
Several landforms are formed in glaciated areas as the ice sheet moves between advancing when additional ice is introduced to the environment and receding due to ablation. Some landforms could be considered cases of superimposed drainage.

--> Potential addition: Biology/Life in Lakes, Use of Lake Data
Shodges34 (talk) 03:52, 17 September 2019 (UTC)