Cenozoic stratig raphy of the Norwegian Sea continental shelf , 64°N -68°N

Abstract

well developed in these areas. A thin interval of Middle Miocene outer shelf sediments is present in well 6607/5- 1. This rests unconf orrnably upon Lower/Middle Eocene middle to outer shelf deposits, which in turn rest unconforrnably upon the Upper Cretaceous. In well 6506/ 12-4, the Upper Miocene rests unconforrnably on outer to middle shelf sediments from the Upper Oligocene/Lower Miocene, which in turn Iie unconforrnably on the Lower/Middle Eocene. In well 6607/5-2 Upper Pliocene outer shelf sediments Iie unconforrnably on the Lower/Middle Eocene. Wells 6610 /7- 1 and /7-2 on the Nordland Ridge penetrate the proximal, oldest parts of the glacially derived prograding sediments of Late Pliocene age, which in this area are middle to inner shelf deposits. In addition, wells 661 0/7-1 and 6610 /3- 1 penetrate underlying Early Oligocene coastal deposits. Lower/Middle Eocene sediments Iie below the coastal deposits in well 661 0/7- 1. In well 661 0/7-2 Upper Pliocene deposits Iie unconforrnably upon low oxic deep basin sediments from the Upper Paleocene. Seismic profiles through this area show that the Upper Pliocene glacial deposits onlap the Lower Oligocene coastal deposits.