NORWAY · LITHOSTRATIGRAPHY

Formations on the Norwegian shelf

The Directorate's lithostratigraphic units, from groups down to members. Each row counts the wellbores with a top filed in the unit and the core cut in it, which is the quickest way to find rock from a given formation.

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All Groups Formations Members

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33 UNITS

Unit	Level	Part of	Wellbores	Median top, m	Cored wellbores	Core, m
Nordland Gp	Group	—	2,034	171	7	256.1
Rogaland Gp	Group	—	1,773	1,952	160	6,332.9
Hordaland Gp	Group	—	1,737	1,035	51	2,116.6
Shetland Gp	Group	—	1,643	2,179	162	6,889.8
Cromer Knoll Gp	Group	—	1,240	2,887	142	4,776.4
Viking Gp	Group	—	990	2,902	311	14,597
Dunlin Gp	Group	—	439	3,121	113	2,729.5
Brent Gp	Group	—	405	3,065	196	16,090.2
Vestland Gp	Group	—	332	3,342	172	7,930.3
Statfjord Gp	Group	—	330	3,065	95	3,695.3
Hegre Gp	Group	—	254	2,807	85	4,844.6
Båt Gp	Group	—	249	2,917	121	10,457.4
Fangst Gp	Group	—	235	3,147	142	8,801.3
No Group Defined	Group	—	192	3,044	54	2,589.5
Kapp Toscana Gp	Group	—	163	1,166	100	7,440.9
Adventdalen Gp	Group	—	151	650	34	769.7
Tyne Gp	Group	—	151	3,854	40	1,282.7
Zechstein Gp	Group	—	143	3,081	17	196.7
Basement	Group	—	110	2,312	57	470.3
Sotbakken Gp	Group	—	107	470	6	265.7
Nygrunnen Gp	Group	—	67	844	2	23.2
Sassendalen Gp	Group	—	67	1,868	26	827.3
Boknfjord Gp	Group	—	58	2,114	3	30.1
Undefined Gp	Group	—	56	2,064	21	358.8
Grey Beds (informal)	Group	—	54	2,604	6	85
Rotliegend Gp	Group	—	52	3,174	18	315.3
Red Beds (informal)	Group	—	41	2,644	7	95.5
Tempelfjorden Gp	Group	—	26	2,461	10	466.4
Gipsdalen Gp	Group	—	25	2,118	14	1,015.5
Bjarmeland Gp	Group	—	13	3,502	9	349.2
Billefjorden Gp	Group	—	4	2,387	3	63.8
No Data	Group	—	2	1,992	0	0
Fladen Gp	Group	—	1	4,162	0	0

About this data

Norwegian Offshore Directorate (Sodir) FactPages, mirrored nightly and used under the Norwegian Licence for Open Government Data (NLOD). Wellbores counts those with a top filed in the unit; the median is of those tops, in metres along the wellbore. Core is the cored length the Directorate files per unit and wellbore, added up.

Developers: this page as JSON is GET /v1/data/norway/formations, documented in the API reference.