Nordagutu. Beskrivelse til kvartærgeologisk kart 1713 IV - M 1:50 000 (med fargetrykt kart)

SKRIFTER
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57
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Forfattere
Bergstrøm, Bjørn
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Utgivelsesår
1984
Publikasjonstype
Utgivelsesår
1984
Summary
The superficial deposits within the map-sheet Nordatugu, southeastern Norway, are classified and described. Most of the mountainous areas are dominated by exposed bedrock or a thin and discontinuous cover of till. In the main valleys, below the marine limit (c. 150 m a.s.l.) fine-grained marine sediments dominate. Large glaciofluvial deposits exist in the valley of Saua, north of Nordsjø. Chemical analyses have been carried out on samples from the superficial deposits. Ice movements and the course of deglaciation have been reconstructed. The oldest ice movement was towards the south, later turning towards SE and ESE. During the deglaciation of the mapped are, there were three glacial events marking advances or halts of the ice-front. The Geitryggen event is correlated with the deposition of the Ski Moraine in the Osdlofjord region and dated to c. 10 000 years B.P. Most of the Nordagutu area was still covered by ice at this time. The younger Akkerhaugen and Nordagutu events have been dated to c. 9800-9750 years B.P., respectively. Short accounts are given on shorelines, shorelevel displacement and pollen analyses. The potential for different utilization of the superficial deposits is also briefly discussed.
Kommune
SKIEN
MIDT-TELEMARK
Fylke
TELEMARK
Tilgjengelig
NGU-biblioteket