TY - JOUR
T1 - Distribution of the Neogene Utsira Sand and the succeeding deposits in the Viking Graben area, North Sea
AU - Gregersen, U.
AU - Johannessen, P.N.
N1 - Funding Information:
We acknowledge funding of the work by the SACS Consortium (Statoil, BP, ExxonMobil, Norsk Hydro, Saga, TotalFinaElf, Vattenfall, GEUS, BGS, SINTEF, IFP, TNO, BRGM) and by the European Union (Thermie programme). Statoil is thanked for providing seismic data, TGS-NOPEC and partners is thanked for allowing reproduction of seismic data, and Statoil and BP for providing well-log data. We acknowledge the good cooperation on the regional geological interpretation in the SACS project with Gary Kirby, Andy Chadwick and Sam Holloway (BGS) and the review of the paper by Gary Kirby. We acknowledge the constructive comments from the referees. This paper is published with permission of Statoil (SACS Steering Committee) and the Geological Survey of Denmark and Greenland (GEUS).
PY - 2007/12
Y1 - 2007/12
N2 - The sandy quartzose parts of the Utsira Formation, the Middle Miocene to mid Pliocene Utsira Sand, extends north-south along the Viking Graben near the UK/Norwegian median line for more than 450 km and 75-130 km east-west. The Utsira Sand is located in basin-restricted seismic depocentres, east of and below prograding sandy units from the Shetland Platform area with Hutton Sands. The Utsira Sand reaches thicknesses up to ca. 300 m in the southern depocentre and 200 m in the two northern depocentres with sedimentation rates up to 2-4 cm/ka. Succeeding Plio-Pleistocene is divided into seismic units, including Base Upper Pliocene, Shale Drape, Prograding Complex and Pleistocene. The units mainly consist of clay, but locally minor sands occur, especially at toes of prograding clinoforms (bottom-set sands) and in the Pleistocene parts, and the total thickness covering the Utsira Sand is in most places more than 800 m, but thins towards the margins.
AB - The sandy quartzose parts of the Utsira Formation, the Middle Miocene to mid Pliocene Utsira Sand, extends north-south along the Viking Graben near the UK/Norwegian median line for more than 450 km and 75-130 km east-west. The Utsira Sand is located in basin-restricted seismic depocentres, east of and below prograding sandy units from the Shetland Platform area with Hutton Sands. The Utsira Sand reaches thicknesses up to ca. 300 m in the southern depocentre and 200 m in the two northern depocentres with sedimentation rates up to 2-4 cm/ka. Succeeding Plio-Pleistocene is divided into seismic units, including Base Upper Pliocene, Shale Drape, Prograding Complex and Pleistocene. The units mainly consist of clay, but locally minor sands occur, especially at toes of prograding clinoforms (bottom-set sands) and in the Pleistocene parts, and the total thickness covering the Utsira Sand is in most places more than 800 m, but thins towards the margins.
KW - Neogene
KW - Northern North Sea
KW - Utsira Sand
UR - http://www.scopus.com/inward/record.url?scp=35548996872&partnerID=8YFLogxK
U2 - 10.1016/j.marpetgeo.2007.04.006
DO - 10.1016/j.marpetgeo.2007.04.006
M3 - Article
SN - 0264-8172
VL - 24
SP - 591
EP - 606
JO - Marine and Petroleum Geology
JF - Marine and Petroleum Geology
IS - 10
ER -