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Météorisation des Blocs de Granite à la Surface des Pédiments dans le Nord du Yukon, Canada [Meteorisation of Granite Blocks on the Surface of Pediments in northern Yukon, Canada]

Dates

Year
2001

Citation

Bjornson, J., and Lauriol, B., 2001, Météorisation des Blocs de Granite à la Surface des Pédiments dans le Nord du Yukon, Canada [Meteorisation of Granite Blocks on the Surface of Pediments in northern Yukon, Canada]: Permafrost and Periglacial Processes, v. 12, no. 3, p. 289-298.

Summary

This article describes how tors calve granite boulders which are then distributed in three zones on the surrounding pediments. The boulders are broken down to granules, sand, silt and clay on the surface of the pediments. The study site is located on a rounded hill of the Old Crow batholith near the Yukon-Alaska border. The methods and techniques used were grain size analysis, rock and sediment geochemistry and boulder fabric. Results show that boulders become smaller and less frequent on the pediment as distance from the tor increases. Weathering processes disaggregate the boulders before they reach the talwegs. Chronological evaluation suggests that 10s to 100s ka are necessary for weathering to reduce the boulders to fine particles.Original [...]

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Types

Provenance

Data source
File Processing
File Process
Type
End Note
Reference Item
3397 record import test
Reference File
NWBLCC-20160406.xml

Additional Information

Identifiers

Type Scheme Key
DOI http://sciencebase.gov/vocab/identifierScheme 10.1002/ppp.391
ISSN http://sciencebase.gov/vocab/identifierScheme 1045-6740, 1045-6740

Citation Extension

journalPermafrost and Periglacial Processes
parts
typeNotes
value9206
typePages
value289-298
typeVolume
value12
typeNumber
value3
citationTypeJournal Article

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