@misc{9232359,
  abstract     = {{The fluctuation of the Svalbard Barents Sea Ice Sheet is relatively well constrained during the Late Weichselian, yet its behaviour before the Last Glacial Maximum (LGM) remains elusive. Inter-fjord areas, largely covered by cold-based, non-erosive ice, have a higher preservation potential for older terrestrial records than fjord areas that were dominated by active ice streams during the Last Glacial Maximum. Basissletta, located on the northeast coast of Spitsbergen, represents one such inter-fjord setting and therefore offers the potential to recover stratigraphic records of the ice sheet fluctuation through the Weichselian. 
The area is an undulating coastal area characterized by Quaternary deposits, which consist predominantly of raised marine sediments, glacial deposits, fluvial and glacifluvial deposits and periglacially altered surfaces. In order to reconstruct the paleoenvironment in Basissletta, and in particular identify high relative sea level stands, glacifluvial and littoral sedimentary sections above the proposed marine limit (ML) of 68 m a.s.l. were described and chronologically constrained using Optically stimulated Luminescence (OSL) dating and Radiocarbon (C14) dating. Geomorphological mapping was conducted through the identification of landforms using digital ortho-imagery and drone imagery obtained during a field excursion to Basissletta, complemented by field observations. 
Chronology and stratigraphical analysis of a delta deposit reveal a composite landform comprising of two deltaic formations separated by an unconformity. The lower unit was deposited during early Marine Isotope Stage (MIS) 3 whereas the upper unit yielded post-LGM ages, indicating a renewed delta formation following deglaciation. The activation of an outwash plain in the foothills, constrains the ice margins retreat during deglaciation to 14 ± 2 ka. Prominent beach ridges are observed up until 78 m a.s.l, which have been constrained to the Late Weichselian deglaciation by OSL and radiocarbon chronologies, and is defined as the post glacial ML, making it about 10 m higher than previously thought. Two high relative sea level events were thus recorded in Basissletta, the former during MIS 3 following an extensive glaciation during MIS 4 and the latter during a post-LGM high stand in the Late glacial – early Holocene transition.}},
  author       = {{Ólafsdóttir Arnholtz, Edda Sól}},
  language     = {{eng}},
  note         = {{Student Paper}},
  series       = {{730}},
  title        = {{Constraining Weichselian high relative sea-level events in Basissletta, northeastern Spitsbergen}},
  year         = {{2026}},
}