The Importance of Eurekan Mountains on Cenozoic Sediment Routing on the Western Barents Shelf

The importance of topography generated by Eocene Eurekan deformation as a sediment source for sandstones deposited on the western Barents Shelf margin is evaluated through provenance study conducted wellbore materials retrieved from Spitsbergen and Vestbakken Volcanic Province Sørvestsnaget Basin in southwest Sea. A variety complementary techniques record change across Paleocene-Eocene boundary BH 10-2008, which samples Paleogene strata Central Tertiary Spitsbergen. Sandstones containing K-feldspar with radiogenic Pb isotopic compositions, chrome spinel heavy mineral assemblage, detrital zircons rutiles prominent Palaeoproterozoic Late Palaeozoic—Early Mesozoic U-Pb age populations are up-section replaced sandstone albitic plagioclase feldspar, metasedimentary schist rock fragments, assemblage abundant chloritoid, metamorphic apatite low REE contents, metapelitic rutile Silurian ages predominantly Archaean populations. Our results clearly demonstrate well-known regional area an exposed terrain east during Paleocene to emerging mountains west north Eocene. marginal basins southwestern Shelf, were sampled wellbores 7316/5-1 7216/11-1S, contain elements both eastern signatures. mixing two sand types delivery consistent fill spill model Teritary Basin, transport Eurekan-derived then south hundreds kilometres Shelf.