Glaciotectonic Features, Southeastern Barents Sea

Seismic and borehole data show that Quaternary deposits in the southeastern Barents Sea (Fig. 1) overlie the Mesosoic bedrock with a prominent erosional unconformity, known from the western Barents Sea as the Upper Regional Unconformity (URU) [Solheim and Kristoffersen, 1984].The Quaternary sequence is subdivided into three seismic and lithologic units: I, glacial diamicton with chaotic seismic signature; II, laminated glacimarine mud (in shallow areas, with a sand layer at the bottom); and I, homogenous marine mud/sand (Fig. 2A) [Gataullin et.al, 1993; Polyak et al., 1995].