HAVERT FM
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Generell informasjon
Generell informasjon Attributt Verdi Litostrat. enhet Den litostratigrafiske enhetens offisielle navn.HAVERT FMNPDID for litostrat. enhet Sokkeldirektoratets entydige nøkkel for litostratigrafiske enheter.58Nivå Angir den litostratigrafiske enhetens nivå. Lovlige verdier: GROUP, FORMATION, MEMBER.FORMATIONLitostrat. enhet, forelder Den litostratigrafiske enhetens offisielle navn, refererer til forelder. Se også nivå. Vil være tom hvis Nivå = GROUP. -
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Beskrivelse
Havert Formation
NameFrom the seal species Halichoerus grypus: The unit corresponds to unit T1-1 or the Svolvær Formation of earlier informal usage.Well type sectionWell 7120/12-2 (Norsk Hydro), coordinates 70°7'30.03"N, 20°48'19.00"E, from 3657 m to 3552 m (Fig 4.42) .Well reference sectionWell 7120/9-2 (Norsk Hydro), coordinates 71°29'40.81"N, 20°42'05.38"E, from 4956 m to 4806 m (Fig 4.43) .Thickness105 m in the type well and 150 m in the reference well.LithologyIn the type well the formation consists of medium to dark grey shales with minor inter-bedded pale grey siltstones and sandstones comprising two generally coarsening upwards sequences. The reference section further north in the Hammerfest Basin shows a more monotonous silty shale sequence with only a very weak upwards coarsening trend.Basal StratotypeThe base is defined by increasing gamma ray and decreasing density responses above underlying mixed clastic and carbonate sequences. In the reference well the base is also easily recognised as basal silty shales directly overlie a 6 m thick limestone bed.Lateral extent and variationPresent information suggests a fining trend from the southern margins of the Hammerfest Basin northwards. Thicknesses are moderate and show no marked trends.AgePalynomorphs suggest a Griesbachian to Dienerian age.Depositional environmentThe formation was deposited in marginal marine to open marine settings with coastal environments to the south and southeast.CorrelationPalynofloras and sequence development show similarities to the Vardebukta Formation of western Spitsbergen.Source-
Dalland, A., Worsley, D. and Ofstad, K. (eds.) 1988: A lithostratigraphic scheme for the Mesozoic and Cenozoic succession offshore mid- and northern Norway. NPD-Bulletin No. 4, 65 pp.
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Brønnbaner som penetrerer
Brønnbaner som penetrerer 15.11.19852373240326.12.19852373240321.07.19862373240320.10.19844806495611.09.19813552365716.04.1984992136623.08.19862786299308.01.20062212259525.11.20062217255020.10.19872671347512.10.20112606281426.02.19941008156908.11.19911002162308.01.20161302189507.04.20191895340517.07.20171886190328.08.20172218222701.12.20201459156402.08.20162075219510.03.20082674289504.03.20162735294419.06.19882663306725.09.20112555366619.07.20082930299211.04.19882913387720.12.19893984430007.05.19902638388415.12.19932804387919.07.20211729371128.05.20212447251919.08.19892512291921.07.20142758286515.06.201930604300 -
Brønnbaner med kjerner
Brønnbaner med kjerner 08.01.2006225.09.20112711.04.19883520.12.1989907.05.19901719.08.198919