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Elevated erosion surfaces in central West Greenland and southern Norway: their significance in integrated studies of passive margin development
Stockholm University, Faculty of Science, Department of Geology and Geochemistry.
Department of Physical Geography and Quaternary Geology.
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2007 (English)In: Norwegian Journal of Geology, ISSN 0029-196X, Vol. 87, 197-206 p.Article in journal (Refereed) Published
Abstract [en]

Elevated erosion surfaces were used as an independant data set in an integrated study of the landscape development in central West Greenland. The study resulted in a time-constrained model describing multiple episodes of post-rift uplift, erosion and burial on a passive margin. The model is based on full integration of three data sets: analysis of large-scale landforms, apatite fission track analysis (AFTA) of samples from outcrops and deep boreholes, and the geological record. These data are equally important as they record specific an unique parts of the landscape history. The relative chronology obtained from the landform record is constrained by geology, which gives the maximum age of an erosin surface, and AFTA that records the cooling history of the subsurface rock. This combined approach validates the interpretation of erosion surface as having been goverened by different base levels in the past, and shows that erosion surfaces can be used to reconstruct tectonic events. Geomorphological key observations for the landscapes of southern Norway are presented and the similarities with landscapes in central West Greenland emphasised, especially the elevated plateaux and the Mesozoic etch surfaces. This similarity suggests that it may be possible to construct a time-constrained model for the landscape development of southern Norway based on our West Greenland approach.

Place, publisher, year, edition, pages
2007. Vol. 87, 197-206 p.
Keyword [en]
erosion surfaces, passive margin, West Greenland, landscape development
National Category
Physical Geography Geosciences, Multidisciplinary
URN: urn:nbn:se:su:diva-17310ISI: 000248556400012OAI: diva2:183831
Available from: 2007-10-12 Created: 2007-10-12 Last updated: 2011-01-11Bibliographically approved

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Lidmar-Bergström, Karna
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Department of Geology and GeochemistryDepartment of Physical Geography and Quaternary Geology
Physical GeographyGeosciences, Multidisciplinary

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