The depositional history of the cretaceous in the northeastern North Sea

Submarine slope morphology as a control on the development of sand-rich turbidite depositional systems: 3D seismic analysis of the Kyrre Fm (Upper Cretaceous), Måløy Slope, offshore Norway

“…The syn-to post-rift transition occurred during the Early Cretaceous and was defined by an overall decrease in the number of active normal faults and a transition from relatively rapid fault-controlled subsidence to relatively slow thermally controlled subsidence Fraser et al, 2003). The locus of subsidence at this time also migrated westwards into the axis of the Sogn Graben, as continental Norway experienced a period of uplift speculated to be linked to the opening of the North Atlantic (Martinsen et al, 1999;Bugge et al, 2001;Gabrielsen et al, 2001). This change in both the rates and the patterns of subsidence and uplift, combined with ongoing deposition of Stratigraphic and sub-regional structural setting of the study area.…”

“…In addition, data from structural backstripping indicate that the slope at this time was relatively steep (2-6 ; Bugge et al, 2001;Gabrielsen et al, 2001;Kjennerud et al, 2001;Kyrkjebø et al, 2001). Despite being dominated by fine-grained deposition, during the Late Turonian a number of sand-rich channels and fans were deposited on the Måløy Slope ( Fig.…”

Constraining sub-seismic deep-water stratal elements with electrofacies analysis; A case study from the Upper Cretaceous of the Måløy Slope, offshore Norway

“…Sandstones in the Svarte, Tryggvason and lower Kyrre Formations have a high glauconite content, which is interpreted to indicate reworking of shallow marine deposits that had been stored for relatively long periods on the shelf (Jackson et al, 2008). In the southern part of the Måløy Slope, around well 35/9-3, these sandstone-rich packages have been interpreted as submarine channels-fills and fans (Bugge et al, 2001;Jackson et al, 2008;Martinsen et al, 2005). On seismic data, they are characterised by bright amplitudes (Jackson, 2011;Jackson et al, 2008;.…”

“…The late Cenomanian-Coniacian succession was deposited in a deep-water environment (Bugge et al, 2001;Jackson et al, 2008;Lien et al, 2003;Surlyk et al, 2003). Below is a description of the core-based sedimentary facies analysis from wells 6204/10-1, 6204/10-2A, 6204/10-2R, and 6204/11-1.…”

“…We therefore use understanding of regional geology and previous work on the lithology of the Upper Cretaceous succession (Bugge et al, 2001;Jackson et al, 2008;Martinsen et al, 2005;Surlyk et al, 2003) constrain the occurrence of dominantly claystone-rich units, which are based on seismic reflection data and well-to-well log correlation.…”