Altevatn. Beskrivelse til kvartærgeologisk kart 1532 II M 1:50 000 (med fargetrykt kart)

SKRIFTER
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52
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Forfattere
Bargel, Terje H.
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Utgivelsesår
1984
Publikasjonstype
Utgivelsesår
1984
Summary
The superficial quaternary deposits occurring within the map-sheet area have been classified and mapped according to their genesis. Till dominates in the lower part of the area. Considerable weathering has taken place at heights above 900-1000 m a.s.l. The steepest hillsides are often covered with talus and other mass-movement deposits derived mostly from weathered material. Glaciofluvial deposits and a large number of glaciofluvial erosion channels occur in the main valleys. The ice flow direction in the area was towards the WNW during the Weichselian maximum. During the course of deglaciation the ice flow direction became more northerly, especially in the northern part of the area. The ice sheet was dynamically active in the main valleys during the entire deglaciation period. Melting features of various kinds indicate rapid melting after last (pre-Boreal) readvance. The entire area was probably ice-free between ca. 9300 and 9000 YBP.
Kommune
MÅLSELV
BARDU
Fylke
TROMS OG FINNMARK
Tilgjengelig
NGU-biblioteket