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

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

“…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 current study represents the first detailed study on the sedimentology and stratigraphy of the late Cenomanian-Coniacian, deep-water succession in the northern part of the Måløy Slope (Figs.1, 2).…”

“…The latest Turonian to early Campanian succession (Kyrre Formation) comprises a thick (up to 1100 m), monotonous succession of silty mudstone that contains sporadic argillaceous limestone stringers. Sandstone-rich packages, such as the Røedspette Member, are found locally in the lower section of the formation (Jackson et al, 2008;Shanmugam et al, 1996). 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).…”

“…Sandstone-rich packages, such as the Røedspette Member, are found locally in the lower section of the formation (Jackson et al, 2008;Shanmugam et al, 1996). 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).…”

“…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.…”