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A compilation of seismic data has been used to characterize the Neogene‐Quaternary sedimentary succession of the northwestern Barents Sea continental margin to better understand the paleoenvironmental evolution and the sedimentary processes involved. The Neogene strata are dominated by contourites related to the ocean circulation established from the opening of the Fram Strait connecting the Atlantic and the Arctic Oceans (< ~17.5 Ma). The upper Plio‐Pleistocene strata (< ~2.7 Ma) are dominated by stacked gravity‐driven deposits forming trough‐mouth fans that were sourced from paleo‐ice streams. Within the interfan areas, contouritic sedimentation prevailed. Thus, this margin provides an example of interaction of glacigenic debris flows, contour currents, and hemipelagic/glacimarine sedimentary processes. A total of ~29,000 km3 of sediments with an average sedimentation rate of about 0.24 m/Kyr were estimated. These numbers reflect the sediment input to this part of the Arctic Ocean from the northwestern Barents Sea shelf and adjacent land areas. For the first time, the average erosion and erosion rates for this source area are estimated using a mass balance approach. Approximately 410–650 m of erosion has on average occurred, corresponding to an average erosion rate of ~0.15–0.24 m/Kyr. These rates are comparable to those reported from other glaciated margins, including the western Svalbard and mid‐Norway margin, but up to only half the rates reported from the western Barents Sea margin. This variation is interpreted due to the size and bedrock types of the drainage area, ice dynamics, and the continental slope gradient. Plain Language Summary: This study is about mapping the offshore glacial sediment by using seismic data in the northeastern Svalbard‐northern Barents Sea continental margin. The studied margin provides a unique opportunity to examine an interaction between downslope and along‐slope sediment processes. Development of Kvitøya glacial fan is highlighted and shows a major sediment delivery under ice streams that reached the shelf break. Prior to or at the onset of glaciation, a major slope failure likely occurred generating a large submarine slide, named Body A. For the first time, the average erosion and erosion rates during the last ~2.7 million years are estimated from this margin. We found out that 410–650 m of sediments were removed from the source area. The erosion rates are estimated (0.15–0.24 m/Kyr) and are comparable with other formerly glaciated margins. This study is an important scientific input for a better understanding of uplift and erosion in the Barents Sea shelf. The present contribution is highly relevant for future hydrocarbon exploration in the Barents Sea area and Arctic region. Finally, investigating such subsurface sediments is crucial for paleoenvironmental reconstruction in order to understand the climate dynamics in the past. Key Points: Quantification of the glacial sediment input to the Arctic Ocean from the northwestern Barents Sea is presentedFor the first time, average erosion and erosion rates are estimated from the source area of this margin using a mass balance approachThese rates are comparable to those reported from other glaciated margin, but only about half compared to the western Barents Sea margin [ABSTRACT FROM AUTHOR]

The interplay between the onshore and offshore areas during the Last Glacial Maximum and the deglaciation of the Scandinavian Ice Sheet is poorly known. In this paper we present new results on the glacial morphology, stratigraphy and chronology of Andøya, and the glacial morphology of the nearby continental shelf off Lofoten-Vesterålen. The results were used to develop a new model for the timing and extent of the Scandinavian Ice Sheet in the study area during the local last glacial maximum ( LLGM) (26 to 16 cal. ka BP). We subdivided the LLGM in this area into five glacial events: before 24, c. 23 to 22.2, 22.2 to c. 18.6, 18 to 17.5, and 16.9-16.3 cal. ka BP. The extent of the Scandinavian Ice Sheet during these various events was reconstructed for the shelf areas off Lofoten, Vesterålen and Troms. Icecaps survived in coastal areas of Vesterålen-Lofoten after the shelf was deglaciated and off Andøya ice flowed landwards from the shelf. During the LLGM the relative sea level was stable until 18.5 cal. ka BP, and thereafter there was a sea-level drop on Andøya. Thus, relative sea level (i.e. a sea level rise) does not seem to be a driving mechanism for ice-margin retreat in this area but the fall in sea level may have had some importance for the grounding episodes on the banks during deglaciation. The positions of the grounding zone wedges ( GZWs) in the troughs are related to the morphology as they are often located where the troughs narrow. [ABSTRACT FROM AUTHOR]