z-logo
Premium
Autochthonous block fields in southern Norway: Implications for the geometry, thickness, and isostatic loading of the Late Weichselian Scandinavian ice sheet
Author(s) -
Nesje Atle,
Dahl Svein Olaf
Publication year - 1990
Publication title -
journal of quaternary science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.142
H-Index - 94
eISSN - 1099-1417
pISSN - 0267-8179
DOI - 10.1002/jqs.3390050305
Subject(s) - geology , ice sheet , lithosphere , post glacial rebound , geomorphology , tectonic uplift , bedrock , tectonics , paleontology
The consistent geographical and altitudinal distribution of autochthonous block fields (mantle of bedrock weathered in situ ) and trimlines in southern Norway suggests a multi‐domed and asymmetric Late Weichselian ice sheet. Low‐gradient ice‐sheet profiles in the southern Baltic region, in the North Sea, and along the outer fjord areas of southern Norway, are best explained by movement of ice on a bed of deforming sediment, although water lubricated sliding or a combination of the two, may not be excluded. The ice‐thickness distribution of the Late Weichselian Scandinavian ice sheet is not in correspondence with the modern uplift pattern of Fennoscandia. Early Holocene crustal rebound was apparently determined by an exponential, glacio‐isostatic rise. Later, however, crustal movements appear to have been dominated by large‐scale tectonic uplift of the Fennoscandian Shield, centred on the Gulf of Bothnia, the region of maximum lithosphere thickness.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here