Athabasca Glacier, Canada – a field example of subglacial ice and till erosion?
Hart, Jane K. (2006) Athabasca Glacier, Canada – a field example of subglacial ice and till erosion? Earth Surface Processes and Landforms, 31, (1), 65-80. (doi:10.1002/esp.1233)
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Official URL: http://dx.doi.org/10.1002/esp.1233
Description/Abstract
The Athabasca Glacier, resting on a rigid bed, provides an excellent example of subglacial
ice and till erosion. The presence of a thin mobile till layer is shown by the presence of flutes,
saturated till layer, push moraines and ploughed boulders. Cross-cutting striations, v-shaped
striations and reversed stoss-and-lee clasts are indicative of clasts rotating within this layer.
As the till moves it erodes the bedrock and clasts within it. A combination of erosion by ice
and till produces stoss-and-lee-clasts and generates striations on flutes and embedded clasts,
as well as eroding the bedrock into a continuum of smoothed, rounded and streamlined forms.
| Item Type: | Article |
|---|---|
| ISSN: | 0197-9337 (print) |
| Uncontrolled Keywords: | glacial erosion, subglacial processes, flutes, stoss-and-lee clasts |
| Related URLs: | http://www3.interscience.wiley...3/abstract http://dx.doi.org/10.1002/esp.1233 |
| Subjects: | G Geography. Anthropology. Recreation > G Geography (General) G Geography. Anthropology. Recreation > GE Environmental Sciences G Geography. Anthropology. Recreation > GB Physical geography |
| Divisions: | University Structure - Pre August 2011 > School of Geography > Environmental Processes and Change |
| ePrint ID: | 55420 |
| Deposited On: | 01 Aug 2008 |
| Last Modified: | 01 Jun 2011 05:58 |
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