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Morphology, distribution and formation of relict marginal moraines in the Swedish mountains
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology.
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology.
2006 (English)In: Geografiska Annaler: Series A, Physical Geography, ISSN 0435-3676, 1468-0459, Vol. 88A, no 4, 253-265 p.Article in journal (Refereed) Published
Abstract [en]

Relict marginal moraines are commonly used landforms in palaeoglaciological reconstructions. In the Swedish mountains, a large number of relict marginal moraines of variable morphology and origin occur. In this study, we have mapped 234 relict marginal moraines distributed all along the Swedish mountains and classified them into four morphological classes: cirque-and-valley moraines, valley-side moraines, complex moraines and cross-valley moraines. Of these, 46 moraines have been reclassified or are here mapped for the first time. A vast majority of the relict moraines are shown to have formed during deglaciation of an ice-sheet, rather than by local mountain glaciers as suggested in earlier studies. The relict marginal moraines generally indicate that deglaciation throughout the mountains was characterised by a retreating ice-sheet, successively damming glacial lakes, and downwasting around mountains. The general lack of moraines indicating valley and cirque glaciers during deglaciation suggests that climatic conditions were unfavourable for local glaciation during the last phase of the Weichselian. This interpretation contrasts with some earlier studies that have reconstructed the formation of local glaciers in the higher parts of the Swedish mountains during deglaciation.

Place, publisher, year, edition, pages
2006. Vol. 88A, no 4, 253-265 p.
Keyword [en]
marginal moraines, moraine formation, deglaciation, Swedish mountains
National Category
Earth and Related Environmental Sciences Physical Geography Geology
URN: urn:nbn:se:su:diva-13366DOI: doi:10.1111/j.0435-3676.2006.00299.xOAI: diva2:179886
Available from: 2006-12-06 Created: 2006-12-06 Last updated: 2011-01-11Bibliographically approved

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