LANGE FM
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General information
General information Attribute Value Lithostrat. unit The lithostratigraphic unit's official name.LANGE FMNPDID lithostrat. unit Norwegian Offshore Directorate's unique id for lithostratigraphic units.94Level Indicates the lithostratigraphic unit's level. Legal values: GROUP, FORMATION, MEMBER.FORMATIONLithostrat. unit, parent The parent lithostratigraphic unit's official name. See also level. Will be empty if Level = GROUP. -
Level below
Level below Lithostrat. unit -
Description
Lange Formation
NameFrom the Norwegian name for the fish species Molva molva (ling).Well type sectionWell 6506/12-1 (Statoil), coordinates 65°10'07.58"N, 06°43'44.07"E, from 3812.5 m to 3190 m (Fig 4.26) . No cores.Well reference sectionWell 6506/12-4 (Statoil), coordinates 65°12'46.97"N, 06°43'30.37"E, from 3835 to 3150 m (Fig 4.25) . The uppermost 7 m are cored.Thickness622.5 m in the type well and 685 m in the reference well.LithologyDominant light/medium grey to green and brown claystones contain stringers of carbonates and sandstones. Claystones in the Barremian-Aptian interval are often reddish-brown and are occasionally interbedded with tuffs.Basal StratotypeThe base is generally marked by a distinct drop in gamma ray response and a decrease in interval transit time shown by the sonic log. In the type well and on Halten Terrace and Trøndelag Platform marls of the Lyr Formation underlie the Lange Formation. In this case the boundary is defined by a gradual decrease in the gamma ray response and a slight but sharp decrease in interval transit times. The boundary has been sampled in shallow cores from the eastern part of the Trøndelag Platform (Bugge et al. 1984), but logs and detailed descriptions of these are not yet available.Lateral extent and variationThe formation is only absent from parts of the Nordland Ridge and on local highs along the western flank of the Trøndelag Platform. The early Cenomanian interval shows a sandstone-rich development in well 6507/7-1 . Sandstones are also expected along the western flank of the Nordland Ridge.
A thin sequence of claystones of Hauterivian to Barremian age subcrop along the eastern part of the Trøndelag Platform. Red-brown oxidized silty claystone found there is also commonly encountered in wells further offshore. Similar sequences are exposed on Andøya and on East Greenland.AgeRyazanian to Turonian.Depositional environmentThe formation was deposited in a marine environment, possibly shallower on the Halten Terrace area and deeper in the basins to the west.CorrelationThe lower part of the Lange Formation may be correlated with the Valhall Formation 1) defined in the central North Sea (Deegan and Scull, 1977).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.
Footnotes-
1) Åsgard Formation according to Isaksen, D. and Tonstad, K. (eds.) 1989: A revised Cretaceous and Tertiary lithostratigraphic nomenclature for the Norwegian North Sea. NPD-Bulletin No. 5, 59 pp.
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Wellbores penetrating
Wellbores penetrating 09.06.20224303463218.09.19912645368517.12.19932505296611.12.20212208231312.07.20221588163511.10.20152550294005.07.19941039110017.11.20091860195317.12.19901999269216.10.20231796188910.06.20013541359410.06.20013659440710.06.20014599466604.09.20033387423222.12.20043442427606.02.20053444427814.03.20053442427626.12.20053453455809.04.19953442435207.01.19963440345027.03.19963459435403.03.20063453434815.04.19973440462005.04.19973502356505.04.19973623437215.02.19993502356515.02.19993623437229.09.19973501465423.02.19983852522407.11.19983532442206.07.20003640473523.05.20003533442326.12.19993530454505.05.20153531427015.01.20193669430626.10.19863222380029.12.19873278388401.06.19883214370315.11.20023124354819.09.20063297387510.08.20103303378326.03.20123500407926.03.20124135418305.04.20203442403231.08.20213685433930.04.20023385406001.05.20233520412501.05.20234132421431.01.20072861367931.01.20073900403209.07.20133172372130.10.20153340395716.11.20183954413708.04.20073563424002.06.20053405422901.07.20073472431529.09.20133299418218.02.19913205337028.02.19913478357717.10.19952954371122.07.20143715401911.06.20143452369526.04.20143312350517.09.20152974344317.08.20153251347812.11.20153146372924.10.20203250382315.05.19833082351016.01.19842601346616.01.19843470350023.08.19963154354721.05.20123228373724.01.20133141346024.01.20133565371722.03.20142997322122.03.20143239337620.04.20143066344320.04.20143461360228.10.20202950318728.10.20213232391406.08.19822535282731.07.19832328239531.08.20092547280002.09.20092585271913.05.20102760286308.05.20112515253015.11.19853010368213.04.20113041376904.03.19882921360504.03.19883655385004.09.20112770305413.12.19902433253605.02.20082072210127.05.20092458268518.05.19882563279528.03.19892631284416.12.20002747333820.09.20072919322714.09.20083119400505.11.20083119400516.10.20163367364620.09.20162867323520.09.20163397343807.06.19922870406220.10.20132424275409.12.20132480282012.05.20152267241223.05.20152540278607.09.19841563158302.02.19851594161028.07.19851555159313.03.19861571161130.05.19931571161125.05.19881666169222.09.19921530159808.11.20191568161319.06.19872390257323.06.19902386277019.01.20162349236818.09.20152257251315.07.19991591161420.12.20091421148202.06.20101486159818.10.19881636166628.06.20073441419304.07.19983746502819.08.20013111366721.03.20203137322507.12.20003086432825.02.20133161336615.09.20093133454828.04.20103212412027.08.20133230400013.07.20183228392413.07.20183974403513.07.20184053413327.04.20183246403127.04.20184110417427.04.20184244433931.03.19883211381326.10.19913413413902.10.19923202414206.06.19963620439910.11.19963401409422.08.19983571439922.08.19984458463427.07.20013465415327.07.20014315454916.07.20063557425716.07.20064402458603.09.20123597451317.04.20183275393317.04.20183976420128.10.20193254391228.07.20203371402206.02.19853190381317.07.19853173370913.08.19853150383527.03.19863187378002.08.19863271402112.08.19873306404230.08.19883185372510.09.19933383412826.06.19953372417711.12.19953580483307.09.19963728455401.02.19973728455401.09.20093580408801.09.20094172439306.08.20093580408806.08.20094172439302.11.20043510374529.09.19862879361016.03.19922831338005.05.19942891379119.02.20082853333214.09.20192981370514.07.20222921336014.07.20223394388326.10.19902845301825.03.19992641301306.05.19992656309816.06.19992656309830.04.20042883304008.05.20083240343222.07.20092718334415.07.20122884296416.08.20132557271928.02.20172621273601.06.20192859337718.09.20212877337910.11.20203109391510.11.20203971460810.11.20204650498519.05.20212963355013.06.20223088374713.06.20223819398803.05.19982718317823.09.19992721320723.06.20002893300015.04.20012793336403.06.20012848346114.02.20022757332708.06.20104772499127.03.20182830369016.07.19912663315401.12.19843000349514.08.19972915332212.08.19992897367012.08.19993745391126.09.20103036376702.05.20123030385418.12.20192783296731.01.20042443257531.10.19822728277015.08.19852290234728.10.19972393242008.07.20012679287012.02.20072817295018.04.20082529253101.07.20152350258024.05.19871527156220.12.20103744525422.10.20054485451310.07.20084158421011.09.19873026381725.10.20112862325826.12.20123005383713.10.20202880331830.10.20202974317922.10.20223833389126.10.20133762533429.11.20072600277329.05.19892663292006.08.19952447246615.08.20062924295621.12.20082539259925.01.20092631267913.06.20143358348431.01.20172796320517.08.20182871335715.09.20183080347403.10.20183096358524.11.20001583161407.11.20072492264403.08.19831820187603.10.20091676185007.07.19831830202217.02.19932543265517.02.19932691288917.02.19933050312611.12.19932542265511.12.19932695288411.12.19933047320311.12.19933412341807.10.19962544265707.10.19962697288607.10.19963049320507.10.19963414342019.06.19831620217719.06.19832190227114.03.19841455148703.02.20131792203019.03.20093525377522.03.19984221431729.12.201443514789 -
Wellbores with cores
Wellbores with cores 17.12.1993215.04.19974526.03.2012320.04.2014128.10.20216804.09.20112804.07.19982719.08.20015921.03.20201102.10.19924906.06.19963827.07.2001813.08.1985127.03.1986116.03.19925105.05.19941025.03.19992715.07.20121201.06.20194110.11.20207213.06.20223427.03.2018311.09.19871722.10.2022329.05.19891231.01.20178117.08.201810815.09.201811717.02.1993219.06.19831129.12.20148