TAU FM
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Generell informasjon
Generell informasjon Attributt Verdi Litostrat. enhet Den litostratigrafiske enhetens offisielle navn.TAU FMNPDID for litostrat. enhet Sokkeldirektoratets entydige nøkkel for litostratigrafiske enheter.164Nivå 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
Tau Formation
NameFrom a village within the Boknfjord area in Rogaland. The formation represents only the lowermost, radioactive part of the Børglum Member as defined by Deegan and Scull (1977).Well type sectionNorwegian well 9/4-3 (Conoco) from 2400 m to 2437 m, coord N 57°36'54.5", E 04°18'57.7" (Fig 3.36) .Well reference sectionNorwegian well 8/1-1 (Phillips) from 2551 m to 2606 m, coord N 57°51'43.53'', E 03°12'27.64" (Fig 3.37) .Thickness37 m in the type well and 55 m in the reference well.LithologyThe Tau Formation consists of dark grey to black, pyritic, fissile, organic-rich slightly to non-calcareous shales.BoundariesThis formation is highly radioactive and the boundaries are characterized by prominent log breaks. The underlying Egersund Formation is less radioactive and has a lower interval transit time than the Tau Formation. The upper boundary may be more gradational but shows a marked increase in radioactivity compared to the overlying unit.DistributionThe formation is confined to the central part of the type area of the Boknfjord Group , and grades laterally into the Børglum unit southwards and eastwards.AgeKimmeridgian to Early Volgian.Depositional environmentThe Tau Formation was deposited in an anaerobic marine environment with high organic productivity and restricted bottom water circulation.Source-
Vollset, J. and Doré, A. G. (eds.) 1984: A revised Triassic and Jurassic lithostratigraphic nomenclature for the Norwegian North Sea. NPD-Bulletin No. 3, 53 pp.
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Brønnbaner som penetrerer
Brønnbaner som penetrerer 07.02.19722551260610.10.19661831189004.12.19822200229025.07.19772351239728.03.20132260231423.07.19712661266321.11.20112262233228.04.19872993309721.09.19872957306208.02.19903098318811.04.19943875399321.07.19953021307815.10.19964627471410.06.19973683378402.02.19985689576917.09.19993551366929.03.20102492257414.10.20192825293213.08.19964478456004.09.19861686174909.12.20052503260719.05.19682200225129.08.19702396243519.08.19722400243720.08.19772598266801.08.20062603265419.08.19711993200512.07.20152215224530.07.19921486153917.01.19711451146412.09.20071107114131.10.19672124214231.10.19672152216523.07.19732127220220.08.19952311233907.02.20112489254223.10.20212393241723.10.19732165220511.06.19742165220524.03.19692640267530.06.19682180219517.05.19762495251321.06.19722167221503.02.19802236228810.07.20092149219815.08.20092358243826.08.20092309237701.01.19802277231931.03.197417471800 -
Brønnbaner med kjerner