Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Inherited landforms and glacial impact of different palaeosurfaces in southwest Sweden
Karlstad University, Faculty of Social and Life Sciences, Centre for Climate and Safety.
2001 (English)In: Geografiska Annaler, 83 A (1-2), Vol. 83 A, 67-89 p.Article in journal (Refereed)
Abstract [en]

Landforms are used as analytical tools to separate inherited features from the glacial impact on Precambrian basement rocks in southwest Sweden. The study covers three different palaeosurfaces, the sub-Cambrian peneplain (relative relief 0-20 m) with the character of a pediplain, an uplifted and dissected part of the sub-Cambrian peneplain (r.r. 5-40 m) and an etchsurface (r.r. 20-135 m), presumably sub-Mesozoic. The surfaces were recently re-exposed, probably due to a Neogene upheaval with some pre-glacial reshaping. Strong structural control and no alignment with glacial erosional directions other than those coinciding with structures, are arguments for etch processes as a most important agent for relief differentiation. This is strengthened by the occurrence of saprolite residues and etchforms in protected positions.

The glacial reshaping of the sub-Cambrian flat bedrock surfaces is negligible. The glacial impact becomes more evident in the uplifted and dissected parts of the peneplain and within the hilly sub-Mesozoic surface. The higher the initial relief the more effect of glacial erosion on individual hills, both on the abrading side with formation of roches moutonnées and on the plucking side. Detailed etchforms are preserved in protected positions in spite of erosion by a clearly wet-based ice. The magnitude of the Pleistocene glacial erosion is considerably less than the amplitude of the palaeorelief in the entire area.

Landscapes of areal glacial scouring have been described as comprised of irregular depressions with intervening bosses scraped by ice and labelled knock and lochan topography, but we suggest that an etched bedrock surface is a prerequisite for this type of landscape to develop.

Place, publisher, year, edition, pages
2001. Vol. 83 A, 67-89 p.
Keyword [en]
landforms, glacial erosion, palaeosurfaces, etching
National Category
Physical Geography
Research subject
Physical Geography
Identifiers
URN: urn:nbn:se:kau:diva-20393OAI: oai:DiVA.org:kau-20393DiVA: diva2:594053
Available from: 2013-01-21 Created: 2013-01-21 Last updated: 2013-01-21

Open Access in DiVA

No full text

Search in DiVA

By author/editor
Johansson, Magnus
By organisation
Centre for Climate and Safety
Physical Geography

Search outside of DiVA

GoogleGoogle Scholar

Total: 128 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf