The Late Paleozoic development of the Ottar basin from seismic 3D interpretation

Abstract

The Late Paleozoic sedimentary environments of the Ottar basin in the SW Barents Sea was studied using five 3D seismic surveys. By the use of seismic stratigraphic analysis and correlation to wells located in close proximity to the study area, the Paleozoic succession has been subdivided into 4 main units: Billefjorden Group (Late Devonian – Mid Carboniferous), Gipsdalen Group (Mid Carboniferous – Early Permian), Bjarmeland Group (Early Permian), Tempelfjorden Group (Mid- to Late Permian) and one from the Triassic: the Havert Formation (Early Triassic). All five groups have been described and discussed with emphasis on their appearance and internal seismic facies with the purpose of recreating the sedimentary processes and the paleoenvironment at time of their deposition.