Lower Tertiary sand development in Viking graben, North Sea

Journal Article · Fri Oct 01 04:00:00 EDT 1982 · Am. Assoc. Pet. Geol., Bull.; (United States)

OSTI ID:6368542

Morton, A C

The Viking graben forms the northernmost part of the North Sea basin. During the Paleocene and early Eocene it was the locus of depositionof thick clastic sequences which now act as the reservoir rocks for several major hydrocarbon accumulations, notably the Frigg gas field, the Heimdal and Blader oil fields, and the recent Chevron discovery in United Kingdom block 2/10. A regional study of lower tertiary sands in the Viking graben, northern North Sea, involving heavy mineral analysis, geophysical log interpretation, and palynologic dating, has led to the successful differentiation of sand bodies, with two distinct source areas being recognized. These both lie on the Orkney-Shetland platform, one being the metamorphic basement in the north, the other the preexisting sediments to the south, probably of Late Jurassic age. Correlation of sand bodies by these means has led to a more complete breakdown of the depositional history of the area. Four phases of basinal subsidence and source-area uplift have been recognized in this way, an dthese are correlated with similar events in te central North Sea. The changes in subsidence pattern and source-area uplift are related to events in the North Atlantic prior to crustal separation between Greenland and Rockall.

• Research Organization: Inst. of Geological Sciences, Leeds, England
• OSTI ID: 6368542
• Journal Information: Am. Assoc. Pet. Geol., Bull.; (United States), Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States) Vol. 66:10; ISSN AAPGB
• Country of Publication: United States
• Language: English

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02 PETROLEUM
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03 NATURAL GAS
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58 GEOSCIENCES
580100* -- Geology & Hydrology-- (-1989)
ATLANTIC OCEAN
CENOZOIC ERA
DEPOSITION
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC HISTORY
GEOLOGIC STRUCTURES
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NATURAL GAS FIELDS
NORTH SEA
OIL FIELDS
PETROLEUM DEPOSITS
RESOURCES
ROCKS
SANDSTONES
SEAS
SEDIMENTARY BASINS
SEDIMENTARY ROCKS
SURFACE WATERS
TERTIARY PERIOD