Deglaciation and palaeoclimate of the Andfjord‐Vågsfjord area, North Norway

Abstract

This paper reviews the deglaciation history and palaeoclimate from 22 to 9.5 14Cka BP in the Andfjord‐Vagsfjord area. Eight main glacial events are recorded: The Egga‐I (>22 14Cka BP), the Bjerka, the Egga‐II (>14.6 14Cka BP), the Flesen (14.5 14Cka BP), the D (13.8–13.2 14Cka BP), the Skarpnes (12.2 14Cka BP), the Tromsø–Lyngen (10.7–10.3 14C ka BP) and the Stordal (10.0–9.5 14Cka BP). Onset of the final deglaciation occurred about 14.6 14Cka BP. Most of the western part of the Fennoscandian and Barents Sea Ice Sheets receded from the outer continental shelf 15–14 14Cka BP. The delivery and melting of icebergs at this time to the Norwegian‐Greenland Sea resulted in a low oxygen isotope event recorded in a number of cores in the region. Atlantic water intruded the area 13.2 14Cka BP, and an atmospheric warming commenced 12.9/12.8 14Cka BP. A marked glacial recession occurred before the Skarpnes event. During Allerød time, the glaciers retreated to the fjord heads or even farther inland. The Fennoscandian outlet glaciers readvanced (locally more than 40 km), reached their Younger Dryas outer limit after 10.7 14Cka BP and retreated from this position before about 10.3 14Cka BP.

Palaeoenvironmental developments in the central Scandinavian mountains during deglaciation – a discussion

“…Vorren, T.O. et al 1990;Olsen et al 2001b;Vorren, T.O. & Plassen 2002) during which the ice reached the edge of the continental shelf in the NE Atlantic region.…”

Preboreal oscillations inferred from Arctica islandica sclerochronology

“…Significant volumes of sediments of Weichselian and Holocene age are present in north Norwegian valleys and fjords (Corner et al, 1990;Vorren and Plassen, 2002;Corner, 2006;Eilertsen et al, 2006). The Breivikeidet Valley, situated at the head of Ullsfjord in Troms County (Fig.…”

Weathering characteristics of arctic islands in northern Norway

“…In fact, several deglaciation-related works indicate a heavy glacial activity in the larger fjords (e.g., Vorren and Plassen, 2002), leading ice away from the more sheltered islands (Ottesen et al, 2005).…”

“…The two dates both pre-date the LGM advance at ∼ 25 ka BP (e.g., Vorren and Plassen, 2002) and the date from N. Langøya covers approximately the last glacial era. The results are given in Table 2.…”