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Vestertanagruppen
Enhetskategori : Litostratigrafisk enhet

Enhetens navn
Navn : Vestertana Enhetstype : gruppe Status : Formell

Gjeldende skrivemåte
Norsk : Vestertanagruppen
Engelsk : Vestertana Group

Andre, ikke foretrukne navn : Vestertana-gruppen

Gjeldende definisjon og beskrivelse av enheten
Reading, H.G. 1965: Eocambrian and Lower Paleozoic geology of the Digermul Peninsula, Tanafjord, Finnmark.,NGU 234, 167-191

Første bruk av enhetsnavnet.
Reading, H.G. 1965: Eocambrian and Lower Paleozoic geology of the Digermul Peninsula, Tanafjord, Finnmark.,NGU 234, 167-191

Enhetens tidligere navn.
Føyn, Sven 1967: Dividal-gruppen ("Hyolithus-sonen") i Finnmark og dens forhold til de eokambriske-kambriske formasjoner.,NGU 249 I, 1-84

Geografisk beliggenhet
Område/Land : Norges fastland
1 : 250000 kartblad : Vadsø; Honningsvåg
1 : 50000 kartblad : Langryggen (2435-1); Skipskjølen (2435-4); Oardujav'ri (2335-1); Tana (2335-4); Smalfjord (2235-1); Polmak (2235-2); Ifjordfjellet (2235-4); Trollfjorden (2336-3); Langfjorden (2236-2); Adamsfjord (2135-1); Ul'lugai'sa (2135-2); Sir'bma (2235-3); Varangerbotn (2335-3); Nesseby (2335-2); Tana (2335-4)

Lokaliteter
Stedsnavn på kart : Vestertana ; Kommune : Tana (2025) ; Fylke : Finnmark (20)
Punktmarkering : UTM-Zone 35 - EUREF89/WGS84........... X-koord: 533000 m..... Y-koord: 7813700 m.
Grader min.sek. Ø : 27 52 57 .....Grader min.sek. N : 70 25 36 ....Nøyaktighet : 200 m.

Regionalgeologisk plassering
Geologisk region : Nord-Norge nord Avgrensning : Midtre og undre dekkeserie grensende i vest mot Nord-Norge vest og østover til og med Varangerhalvøya.
Tektonisk hovedinnd.: Undre dekkeserie
Tektonisk enhet : Gáisá-dekkekomplekset

Beskrivelse
Litologisk kode : Prekaledonsk, overflatebergart
Metamorfose : kaledonsk, regional, svært lav grad Tykkelse : Ca. 1500 m
Hovedlitologi : Sandsteiner, slamsteiner, leirskifre
Beskrivelse : Gruppen består av en veksling mellom kvarsittiske sandsteiner, gråvakker, slamsteiner, sandige skifre, leirskifre. og litt dolomitt. Den inneholder to tillittformasjoner i sin nedre del. Vestertanagruppen er inndelt i følgende fem formasjoner: Smalfjordformasjonen (eldste tillitt), Nyborgformasjonen, Mortensnesformasjonen (yngste tillitt), Stáhpogieddi-formasjonen. og Breivikformasjonen. Den ligger i Gáisá-dekkekomplekset og som autokton/parautukton lagserie ved Varangerfjorden.

Alder
Eon/æra : Proterozoikum Tid : Pt-Pz Vendium-kambrium
Hva slags alder : Avsetning
Dateringsmetode : fossiler (Fossilbestemmelser)
Kommentar : sporfossiler Litteraturreferanse om dateringen: Hamar,G. 1967, NGU 249 og Vidal,G. 1981, NGU 362 Bull,59 Banks,N.L.,1970, i Crimes & Harper: Trace Fossils s.19-34.; KILDE: NGU 249,
Litteraturreferanse : Føyn, Sven 1967: Dividal-gruppen ("Hyolithus-sonen") i Finnmark og dens forhold til de eokambriske-kambriske formasjoner.,NGU 249 I, 1-84

Relasjon
Type relasjon : Hva slags relasjon/Eventuell reg.kommentar Navn på enhet
Naboforhold : Overliggende enhet av samme rang Digermulgruppe
Naboforhold : Underliggende enhet av samme rang Porsangerfjordgruppe
Naboforhold : Underliggende enhet av samme rang Tanafjordgruppe

Bidragsyter
Dato : 08.03.1988 Navn : Anna Siedlecka
Kontaktadresse : NGU, 7491, Trondheim

Annen litteratur der Vestertanagruppen er omtalt
Beynon, D.R.V.; Chapman, G.R.; Ducharme, R.O.; Roberts, J.D. 1967: The geology of the Leirpollen area, Tanafjord, Finnmark.,NGU 247, 7-17

Siedlecka, Anna; Siedlecki, Stanislaw 1967: Some new aspects of the geology of Varanger peninsula (Northern Norway). Preliminary report.,NGU 247, 288-306 +

Hamar, Gyørgy 1967: Platysolenites antiquissimus eichw. (Vermes), NGU Publ. nr. 249

White, Brian 1968: The Porsanger Sandstone Formation and subjacent rocks in the Lakselv District, Finnmark, Northern Norway.,NGU 255, 59-85

White, Brian 1968: A geological reconnaissance of Oldereidhalvøya, Porsangerfjord, Finnmark, Northern Norway,Norsk geologisk tidsskrift 48 (3), 187-200

Føyn, Sven 1968: Laksefjord-gruppen ved Tanafjorden.,NGU 258, 5-16

White, Brian 1968: The Stabbursnes Formation and Porsanger Dolomite Formation in the Kolvik district, Northern Norway. The development of a Precambrian algal environment.,NGU 258, 79-115

Røe, Signe-Line 1970: Correlation between the Late Precambrian Older Sandstone series of the Varangerfjord and Tanafjord areas. Preliminary report.,NGU 266, 230-245

Roberts, D.; Gustavson, M. 1971: The caledonian geology of Northern Norway., NGU Publ. nr. 269

Gayer, Rodney A.; Roberts, Jeffery D. 1971: The structural relationships of the Caledonian nappes of Porsangerfjord, West Finnmark, N. Norway.,NGU 269, 21-67

Banks, N. L.; Edwards, M.B.; Geddes, W.P.; Hobday, D.A.; Reading, H.G. 1971: Late Precambrian and Cambro-Ordovician sedimentation in East Finnmark.,NGU 269, 197-236

Siedlecka, Anna; Siedlecki, Stanislaw 1971: Late Precambrian sedimentary rocks of the Tanafjord-Varangerfjord region of Varanger peninsula, Northern Norway.,NGU 269, 246-294

Laird, M.G. 1972: Sedimentation of the ?Late Precambrian Raggo Group, Varanger Peninsula, Finnmark.,NGU 278, 1-11

Siedlecka, Anna; Siedlecki, Stanislaw 1972: Lithostratigraphical correlation and sedimentology of the Late Precambrian of Varanger Peninsula and neighbouring areas of East Finnmark, northern Norway.,24th IGC, section 6, 349-358

Strand, T. & Kulling, O. 1972: Part I The Norwegian Caledonides, Scandinavian caledonides, red. de Sitter, Wiley - Interscience

Siedlecka, Anna 1973: The late Precambrian Øst-Finnmark Supergroup - a new litho- stratigraphic unit of high rank.,NGU 289, 55-60

Edwards, Marc B.; Baylis, P.; Gibling, M.; Goffe, W.; Potter, M.; Suthren, R.J. 1973: Stratigraphy of the "Older Sandstone Series" (Tanafjord Group) and Vestertana Group north of Stallogaissa, Laksefjord district, Finnmark.,NGU 294, 25-41

Banks, Nigel L.; Røe, Signe-Line 1974: Sedimentology of the late Precambrian Golneselv Formation, Varangerfjorden, Finnmark.,NGU 303, 17-38

Roberts, David; Fareth, Eigill 1974: Correlation of autochthonous stratigraphical sequences in the Alta-Repparfjord region, West Finnmark.,Norsk geologisk tidsskrift 54 (1), 123-129

Siedlecka, Anna 1975: Late Precambrian stratigraphy and structure of the north-eastern margin of the Fennoscandian shield (East-Finnmark - Timan Region).,NGU 316, 313-348

Roberts, David 1975: Geochemistry of dolerite and metadolerite dykes from Varanger Peninsula, Finnmark, North Norway.,NGU 322, 55-72

Williams, D. Michael 1976: A Revised stratigraphy of the Gaissa Nappe, Finnmark.,NGU 324, 63-78

Findlay, R.H.; Elverson, E.R. 1977: Structural relations between the Precambrian basement, the Laksefjord Group and the Vestertana Group at the head of Laksefjord, East Finnmark, Norway.,NGU 334, 91-106 +

Bjørlykke, K. 1978: The eastern Marginal zone of tge Caledonide orogeny in Norway, Geological survey of Canada Paper 78-13 49-55

Sturt, Brian A.; Roberts, David 1978: Caledonides of northernmost Norway (Finnmark).,Paper; Caledonian-Appalachian orogen of the North Atlantic region; Norwegian contribution no. 58; 78-13, 17-24

Williams, D. Michael 1979: Structural developement of the Gaissa Nappe in the Finnmark Caldonides, North Norway.,NGU 348, 93-104

Siedlecki, S. 1980: 1:250 000, Berggrunnskart Vadsø

Oftedahl, Christoffer 1980: Geology of Norway.,NGU 356, 3-114

Roerll, Unni Havem 1980: Foreign dissertations on Norwegian geology., NGU Publ. vol.361

Bryhni, I.; Brastad, K. 1980: Caledonian regional metamorphism in Norway.,Journal 137, 251-259

Nystuen, Johan Petter 1980: Stratigraphy of the Upper Proterozoic Engerdalen group, Kvitvola Nappe southeastern Scandinavian Caledonides,Förhandlingar (GFF) 102 (4), 551-560

Milton, Nicholas J. 1980: Stylolites and crack-seal veins in Finnmark, north Norway.,Norsk geologisk tidsskrift 60 (3), 219-221

Vidal, G. 1981: Micropaleontology and biostratigraphy of the Upper Proterozoic and Lower Cambrian sequence in East Finnmark, Northern Norway.,NGU 362, 1-53

Follestad, Bjørn A. 1982: Ekkerøy. Beskrivelse til kvartærgeologisk kart 2435 II. M 1:50 000.,NGU; Skrifter 372; 36, 1 - 32

Siedlecka, Anna 1982: Supralittoral ponded algal stromatolites of the Late Precambrian Annisjokka Member of the Båtsfjord Formation, Varanger peninsula, North Norway.,Precambrian Research 18, 319-345

Pharaoh, T.C.; MacIntyre, R.M.; Ramsay, D.M. 1982: K-Ar age determination on the Raipas suite in the Komagfjord Window, northern Norway.,Norsk geologisk tidsskrift 62 (1), 51-57

Føyn, Sven; Chapman, Timothy John; Roberts, David 1983: Adamsfjord og Ul'lugai'sa. Beskrivelse til de berggrunngeologiske kart 2135 I og 2135 II - M 1:50 000 (med fargetrykt kart).,NGU; Skrifter 381; 40, 1-78 + ka

Edwards, Marc B. 1984: Sedimentology of the Upper Proterozoic glacial record, Vestertana Group, Finnmark, North Norway.,NGU Bulletin 394, 1-76

Føyn, Sven 1984: Venedian-Cambrian stratigraphy and Caledonian tectonics in the area between Laksfjorden and Guor'gabmir, Finnmark, North Norway.,NGU Bulletin 395, 39-45

Neumann, Henrich 1985: Norges mineraler., NGU Skrifter vol.68

Roberts, David 1985: The Caledonian fold belt i Finnmark,NGU Bulletin 403, 161-177

Føyn, S. 1985: The Late Precambrian in northern Scandinavia, The Caledonide Orogen - Scandinavia and related areas Part 1, pp 233-246

Vidal, G. 1985: Biostratigraphic correlation of the Upper Proterozoic and Lower Cambrian of the Fennoscandian Shield and the Caledonides of East Greenland and Svalbard., The Caledonide Orogen - Scandinavia and related areas Part 1, pp 331-338

Pharaoh, Tim C.; Ramsey, Donald; Jansen, Øystein 1983: Stratigraphy and structure of the northern part of the Repparfjord - Komagfjord window, Finnmark, Northern Norway.,NGU 377, 1-45

Chapman, T. J. et al. 1985: Structural cross-sections through the Finnmark Caledonides and timing of the Finnmarkian event, The Caledonide Orogen - Scandinavia and related areas Part 1, pp 593-610

Roberts, David 1985: The Caledonian fold belt i Finnmark,NGU Bulletin 403, 161-177

Bevins, R.E.; Robinson, D.; Gayer, R.A. 1986: Low-grade metamorphism and its relationship to thrust tectonics in the Caledonides of Finnmark, North Norway,NGU Bulletin 404, 33-44

Chroston, P.N. 1986: Gravity anomalies on Varangerhalvøya, Finnmark,NGU Bulletin 404, 45-56

Townsend, C. 1987: Thrust transport direcions and thrust sheet restoration in the Caledonides of Finnmark, Journal of Structural Geology, Vol. 9, No.3, pp. 345-352

Siedlecka, A. 1987: Skoganvarre. Berggrunnskart; Skoganvarre; 20344; 1:50 000; sort/hvitt;

Townsend, C. 1987: Thrust transport directions and thrust sheet restoration in the Caledonides of Finnmark, North Norway, Journal of Structural Geology, Vol. 9, No. 3, 345-352

Gayer, R.A.; Hayes, S.J.; Rice, A.H.N. 1987: Restoration of the Caledonian Baltoscandian margin from balanced cross-sections: the problem of excess continental crust,Transactions of the Royal Society of Edinburgh; Earth Sciences 78, 197-217

Gayer, R.A.; Rice, A.H.N. 1989: Palaeogeographic reconstruction of the pre- to sun-Iapetus rifting sediments in the Caledonides of Finnmark, N. Norway., The Caledonide Geology of Scandinavia, ed. R.A.Gayer, Graham & Trotman, London, s. 127-39

Rice, A.H.N.; Bevins, R.E.; Robinson, D.; Roberts, D. 1989: Evolution of low-grade metamorphic zones in the Caledonides of Finnmark, N Norway., The Caledonide Geology of Scandinavia, ed. R.A.Gayer, Graham & Trotman, London, s. 177-91.

Nikolaisen, Frank; Hemmingsmoen, Gunnar 1990: Lower and Middle Cambrian trilobits from the Digermul peninsula, Finnmark, northern Norway,NGU Bulletin 419, 55-95

Siedlecka, A. 1990: Varangerbotn. Berggrunnskart; Varangerbotn; 23353; 1:50 000; sort/hvitt;

Siedlecka, Anna; Roberts, David 1992: The bedrock geology of Varanger Peninsula, Finnmark, North Norway: an excusion guide,Special publication 5, 1-45

Rice, A.H.N. 1994: Stratigraphic overlap of the late Proterozoic Vadsø and Barents Sea Groups and correlation across the Trollfjorden - Komagelva Fault, Finnmark, North Norway,Norsk geologisk tidsskrift 74 (1), 48-57

Siedlecka, Anna; Negrutsa, Vladimir Z.; Lyubtsov, Valery V. 1995: Correlation between Upper Proterozoic successions in the Tanafjorden-Varangerfjorden Region of Varanger Peninsula, northern Norway, and on Sredni Peninsula and Kildin Island in the northern coastal area of Kola Peninsula in Russia,Special publication 7, 217-232

Torsvik, Trond H.; Roberts, David; Siedlecka, Anna 1993: Palaeomagnetic data from sedimentary rocks and dolerite dykes, Kildin island, Rybachi, Sredni and Varanger peninsulas, NW Russia and NE Norway.,1st International Barents Symposium, 21-24 October 1993, Kirkenes,; Norway. (Abstracts)., upag.

Roberts, David 1996: Caledonian and Baikalian tectonic structures on Varanger Peninsula, Finnmark, Norway, and coastal areas of Kola Peninsula, NW Russia,NGU Bulletin 431, 59-65

Sochava, Andrei V.; Siedlecka, Anna 1997: Major element geochemistry of Neoproterozoic successions of Varanger Pensinsula, North Norway, and Sredni and Rybachi Peninsulas, North- west Kola, Russia: provenance patterns and basin evolution,NGU Bulletin 432, 77-93

Roberts, David; Walker, Nicholas 1997: U-Pb zircon age of a dolerite dyke from near Hamningberg,Varanger Peninsula, North Norway, and its regional significance,NGU Bulletin 432, 95-102

Roberts, David; Gorokhov, Igor M.; Siedlecka, Anna; Melnikov, Nikolai N.; Turchenko, Tatyana L.; Konstantinova, Galina V.; Kutyavin, Eduard P.; Sochava, Andrei V. 1997: Rb-Sr dating of illite fractions from Neoproterozoic shales on Varanger Peninsula, North Norway,NGU Bulletin 433, 24-25

Jensen, Sören ; Grant, Stephen W.F. 1998: Trace fossils from the Dividalen Group, northern Sweden: implications for Early Cambrian biostratigraphy of Baltica.,Norsk geologisk tidsskrift 78 (4), 305-317

Siedlecka, Anna ; Roberts, David ; Olsen, Lars 1999: Geologi på Varangerhalvøya: en oversikt med ekskursjonsforslag.,Gråsteinen 3, 122

Roberts, David 1998:, NGU, Berggrunnskart M 1: 250 000, Honningsvåg

Rice, A. H. N.; Hofmann, Ch.-Ch.; Pettersen, A. 2001: A new sedimentary succession from the southern margin of the Neoproterozoic Gaissa Basin, south Varangerfjord, North Norway; the Lattanjar'ga unit.,Norsk geologisk tidsskrift 81 (1), 41-48

Rice, A.H.N.; Hofmann, Ch.-Ch. 2001: The transition from Neoproterozoic glacial to interglacial sedimentation near Hammarnes, East Finnmark, North Norway,Norsk geologisk tidsskrift 81 (4), 257-262

Guise, Philip G.; Roberts, David 2002: Devonian ages from 40 Ar/39Ar dating of plagioclase in dolerite dykes, eastern Varanger Peninsula, North Norway.,NGU Bulletin 440, 27-37

Sundvoll, Bjørn ; Roberts, David 2003: A likely Early Ordovician age for the regional penetrative cleavage in the Gaissa Nappe Complex.,NGU Bulletin 441, 51-59

Røe, Signe-Line 2003: Neoproterozoic perpheral-basin deposits in eastern Finnmark, N. Norway: stratigraphic revision and palaeotectonic implications.,Norsk geologisk tidsskrift 83, 259-274

Baarli, B. Gudveig; Levine, Rebekah; Johnson, Markes E. 2006: The Late Neoproterozoic Smalfjord Formation of the Varanger Peninsula in northern Norway: a shallow fjord deposit,Norwegian journal of geology 86 (2), 133-150

Siedlecka, A.; Reading, H. G.; Williams, G. D.; Roberts, D. 2006: Berggrunnskart, Langfjorden 2236 II, foreløpig utgave M 1: 50 000, Norges geologiske undersøkelse, 2236-2 Langfjorden

Fjellanger, Jakob ; Sørbel, Leif 2007: Origin of the palaeic landforms and glacial impact on the Varanger Peninsula, northern Norway,Norwegian journal of geology 87 (1-2), s. 223-238

Fjellanger, Jakob ; Nystuen, Johan Petter 2007: Diagenesis and weathering of quartzite at the palaeic surface of the Varanger Peninsula, northern Norway,Norwegian journal of geology 87 (1-2), s. 239-251

Siedlecka, A., Roberts, D. 2009: Berggrunnskart TROLLFJORDEN 2336-3, M 1:50 000, Norges geologiske undersøkelse, 2336-3 Trollfjorden

Siedlecka, A.; Roberts, D. 2010: Ifjordfjellet. Berggrunnskart; Ifjordfjellet; 22354; 1:50 000; Foreløpig utgave plotteversjon

Siedlecka, A. 2010: Smalfjord. Berggrunnskart; Smalfjord; 22351; 1:50 000; Foreløpig utgave plotteversjon

Siedlecka, A 2010: Berggrunnskart TANA 2335-4, M 1:50 000., Norges Geologiske Undersøkelse, 2335-4 Tana

Siedlecka, A. & Lieungh, B. 2011: Berggrunnskart Polmak 2235 II og Særbat 2234 I, M 1:50000, foreløpig utgave., NGU, 2235-2 Polmak

Siedlecka, A. 2011: Berggrunnsgeologisk kart SIRBMA, Berggrunnskart SIRBMA 2235 III, M 1:50.000, foreløpig utgave. NGU, 2235-3 Sirbma

Siedlecka, A.; Davidsen, B., Rice, A.H.N.; Townsend C. 2011: Berggrunnsgeologisk kart SKOGANVARRI 2034 IV, M 1: 50.000, revidert foreløpig utgave., NGU, 2034-4 Skoganvarri

Bingen, B.; Belousova, E.A.; Griffin, W.L. 2011: Neoproterozoic recycling of the Sveconorwegian orogenic belt: Detrital-zircon data from the Sparagmite basins in the Scandinavian Caledonides, Precambrian Research, Vol. 189, Issue 3-4, pp. 347-367

Roberts, D., Chand, S., Rise, L. 2011: A half-graben of inferred Late Palaeozoic age in outer Varangerfjorden, Finnmark: evidence from seismic reflection profiles and multibeam bathymetry, Norwegian Journal of Geology, Vol 91, pp. 191-200.

Roberts. D., Siedlecka, A. 2012: Provenance and sediment routing of Neoproterozoic formations on the Varanger, Nordkinn, Rybachi and Sredni peninsulas, North Norway and Northwest Russia: a review, Bulletin 452, s. 1-19

Rice, A. H. N. 2013: Restoration of the external Caledonides, Finnmark, north Norway, Special Publication - Geological Society of London, December 11, 2013, Vol. 390

Högström, A. E. S., Jensen, S., Palacios, T., Ebbestad, J. O. R. 2013: New information on the Ediacaran–Cambrian transition in the Vestertana Group, Finnmark, northern Norway, from trace fossils and organic-walled microfossils, Norwegian Journal of Geology, Vol 93, pp. 95–106

Corfu, F., Andrersen, T. B., Gasser, D. 2014: The Scandinavian Caledonides: main features, conceptual advances and critical questions, Special Publication - Geological Society of London, January 09, 2014, Vol. 390


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