Sedimentology and petrography of the Svenskøya Formation on Hopen, Svalbard: an analogue to sandstone reservoirs in the Realgrunnen Subgroup

  • Gareth S. Lord Department of Geoscience and Petroleum, Institute of Geoscience and Petroleum, Norwegian University of Science and Technology (NTNU), Trondheim, Norway; Department of Arctic Geology, University Centre in Svalbard, Longyearbyen, Norway
  • Mai Britt E. Mørk Department of Geoscience and Petroleum, Institute of Geoscience and Petroleum, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
  • Atle Mørk Department of Geoscience and Petroleum, Institute of Geoscience and Petroleum, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
  • Snorre Olaussen Department of Arctic Geology, University Centre in Svalbard, Longyearbyen, Norway
Keywords: Barents Sea, Triassic, Jurassic, exploration, Wilhelmøya Subgroup, petrography


On the island of Hopen, in the Svalbard Archipelago, the Svenskøya Formation is a succession 35 m in thickness, consisting primarily of sandstone beds and forming the youngest strata exposed on the island. We present a sedimentological and petrographic study of the formation and compare the unit with its exposures on Wilhelmøya and in Kong Karls Land, Svalbard. We also compare the onshore characteristics of the Svenskøya Formation with those of the Tubåen Formation, its time-equivalent unit in the Sentralbanken area of the northern Barents Sea. On Hopen, the Svenskøya Formation is interpreted as representing coarse clastic sediments deposited in a fluvial to tidal setting, prior to being overlain by a thin interval composed of tidal channel and marine shale deposits. The unit sits atop the regional “Rhaetian Unconformity” and represents sediments deposited during a regressive system that terminates at a flooding surface representing a local transgression of the palaeo-coastline. Petrographic studies show the formation as being arkosic, both on Hopen and in the Sentralbanken area. The reservoir quality of sandstone samples recovered from Hopen is somewhat lower compared to sandstone reservoirs in the Sentralbanken area. We attribute this to greater effects of diagenesis in the Hopen area, which caused increased compaction, mineral dissolution and extensive precipitation of pore-filling clay minerals.


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Abay T.B., Karlsen D.A., Lerch B., Olaussen S., Pedersen J.H. & Backer-Owe K. 2017. Novel proof of migrated petroleum in the Mesozoic strata in Svalbard and detailed organic geochemical characterization—implications for, regional exploration. Journal of Petroleum Geology 40, 5–36,

Anell I., Braathen A., Olaussen S. & Osmundsen P.T. 2013. Evidence of faulting contradicts quiescent northern Barents Shelf during the Triassic. First Break 31, 67–76,

Anell I.M., Braathen A. & Olaussen S. 2014. The Triassic–Early Jurassic of the northern Barents Shelf: a regional understanding of the Longyearbyen CO2 reservoir. Norwegian Journal of Geology 94, 83–98.

Anell I.M., Faleide J.I. & Braathen A. 2016. Regional tectono-sedimentary development of the highs and basins of the northwestern Barents Shelf. Norwegian Journal of Geology 96, 27–41,

Anell I., Midtkandal I. & Braathen A. 2014. Trajectory analysis and inferences on geometric relationships of an Early Triassic prograding clinoform succession on the northern Barents Shelf. Marine and Petroleum Geology 54, 167–179,

Bergan M. & Knarud R. 1993. Apparent changes in clastic mineralogy of the Triassic–Jurassic succession, Norwegian Barents Sea: possible implications for palaeodrainage and subsidence. In T.O. Vorren et al. (eds.): Artic geology and petroleum potential. Pp. 481–493. Amsterdam: Elsevier.

Berné S., Trentesaux A., Stalk A., Missiaen T. & De Batist M. 1994. Architecture and long term evolution of a tidal sandbank: the Middelkerke Bank (southern North Sea). Marine Geology 121, 57–72,

Bridge J.S. 2006. Fluvial facies models: recent developments. In H.W. Posamentier & R.G. Walker (eds.): Facies models revisited. Pp. 85–170. Tulsa: Society for Sedimentary Geology.

Buiter S.J.H. & Torsvik T.H. 2007. Horizontal movements in the eastern Barents Sea constrained by numerical models and plate reconstructions. Geophysical Journal International 137, 1376–1389,

Cant D.J. & Walker R.G. 1978. Fluvial processes in the sandy braided South Saskatchewan River, Canada. Sedimentology 25, 625–648,

Dallmann W.K. & Elvevold S. 2015. Bedrock geology. In W.K. Dallmann (ed.): Geoscience atlas of Svalbard. Report Series 148. Pp. 133–174. Tromsø: Norwegian Polar Institute.

Dallmann W.K., Elvevold S., Majka J. & Piepjohn K. 2015. Tectonics and tectonothermal events. In W.K. Dallmann (ed.): Geoscience atlas of Svalbard. Report Series 148. Pp. 175–224. Tromsø: Norwegian Polar Institute.

Dalrymple R.W. & Choi K. 2007. Morphologic and facies trends through the fluvial–marine transition in tide-dominated depositional systems: a schematic framework for environmental and sequence stratigraphic interpretation. Earth Science Reviews 81, 135–174,

Dimakis P., Braathen B.I., Faleide J.I., Elverhøi A. & Gudlaugsson S.T. 1998. Cenozoic erosion and the preglacial uplift of the Svalbard–Barents Sea region. Tectonophysics 300, 311–327,

Doré A.G. 1995. Barents sea geology, petroleum resources and economic potential. Arctic 48, 207–221,

Drachev S.S. 2016. Fold belts and sedimentary basins of the Eurasian Arctic. Arktos 2, article no. 21,

Embry A. 2011. Petroleum prospectivity of the Triassic–Jurassic succession of Sverdrup Basin, Canadian Arctic Archipelago. In A.M. Spencer et al. (eds.): Arctic petroleum geology. Pp. 545–558, London: The Geological Society.

Embry A.F. 2009. Practical sequence stratigraphy. Calgary: Canadian Society of Petroleum Geologists.

Faleide J.I., Pease V., Curtis M., Klitzke P., Minakov A., Sheck-Wenderoth M., Kostyuchenko S. & Zayonchek A. 2017. Tectonic implications of the lithospheric structure across the Barents and Kara shelves. In E.P.F. Rose et al. (eds.): Military aspects of geology: fortification, excavation and terrain evaluation. Pp. 285–314. London: The Geological Society.

Fielding C.R. 2006. Upper flow regime sheets, lenses and scour fills: extending the range of architectural elements for fluvial sediment bodies. Sedimentary Geology 190, 227–240,

Fleming E.J., Flowerdew M.J., Smyth H.R., Scott R.A., Morton A.C., Omma J.E., Frei D. & Whitehouse M.J. 2016. Provenance of Triassic sandstones on the southwest Barents Shelf and the implication for sediment dispersal patterns in northwest Pangaea. Marine and Petroleum Geology 78, 516–535,

Flood B., Nagy J. & Winsnes T.S. 1971. The Triassic succession of Barentsøya, Edgeøya and Hopen (Svalbard). Norsk Polarinstitutt Meddelelser 100. Oslo: Norwegian Polar Institute.

Gjelberg J., Dreyer T., Høie A., Tjelland T. & Lilleng T. 1987. Late Triassic to Mid Jurassic sandbody development on the Barents andmid-Norwegian shelf. In J. Brooks & K.W. Glennie(eds.): Petroleum geology of north west Europe. Pp. 1105–1129. London: Graham & Trotman.

Glørstad-Clark E., Faleide J.I., Lundschien B.A. & Nystuen J.P. 2010. Triassic seismic sequence stratigraphy and palaeogeography of the western Barents Sea area. Marine and Petroleum Geology 27, 1448–1475,

Grogan P., Østvedt-Ghazi A-M., Larssen G.B., Fotland B., Nyberg K., Dahlgren S. & Eidvin T. 1999. Structural elements and petroleum geology of the Norwegian sector of the northern Barents Sea. In A.J. Fleet & S.A.R. Boldy (eds.): Petroleum geology of northwest Europe: proceedings of the 5th Conference. Vol. 1. Pp. 247–259. London: The Geological Society.

Haile B.G., Czarniecka U., Xi K., Smyrak-Sikora A., Jahren J., Braathen A. & Hellevang H. 2018. Hydrothermally induced diagenesis: evidence from shallow marine–deltaic sediments, Wilhelmøya, Svalbard. Geoscience Frontiers 10, 629–649,

Harland W.B. & Geddes I. 1997. Triassic history. In W.B. Harland (ed.): The geology of Svalbard. Pp. 340–362. London: The Geological Society.

Hendriks, B.W.H. & Andriessen P.A.M. 2002. Pattern and timing of the post-Caledonian denudation of northern Scandinavia constrained by apatite fission track termochronology. In A.G. Dore et al. (eds.): Exhumation of the North Atlantic Margin: timing, mechanisms and implications for petroleum exploration. Pp. 117–137. London: The Geological Society.

Henriksen E., Bjørnseth H.M., Hals K.T., Heide T., Kiryukhina T., Kløvjan O.S., Larssen G.B., Ryseth A.E., Rønning K., Sollid K. & Stoupakova A. 2011. Uplift and erosion of the greater Barents Sea: impact on prospectivity and petroleum systems. In A.M. Spencer et al. (eds.): Arctic petroleum geology. Pp. 271–281, London: The Geology Society.

Høy T. & Lundschien B.A. 2011. Triassic deltaic sequences in the northern Barents Sea. In A.M. Spencer et al. (eds.): Arctic petroleum geology. Pp. 249–260, London: The Geology Society.

Klausen T.G. & Mørk A. 2014. Upper Triassic paralic deposits of the De Geerdalen Formation on Hopen: outcrop analog to the subsurface Snadd Formation in the Barents Sea. The American Association of Petroleum Geologists Bulletin 98, 1911–1941,

Klausen T.G., Müller R., Slama J. & Helland-Hansen W. 2017. Evidence for Late Triassic provenance areas and Early Jurassic sediment supply turnover in the Barents Sea Basin of northern Pangea. Lithosphere 9, 14–28,

Klausen T.G., Ryseth A.E., Helland-Hansen W., Gawthorpe R. & Laursen I. 2014. Spatial and temporal changes in geometries of fluvial channel bodies from the Triassic Snadd Formation of offshore Norway. Journal of Sedimentary Research 84, 567–585,

Klausen T.G., Ryseth A.E., Helland-Hansen W., Gawthorpe R. & Laursen I. 2015. Regional development and sequence stratigraphy of the Middle to Late Triassic Snadd Formation, Norwegian Barents Sea. Marine and Petroleum Geology 62, 102–122,

Koevoets M.J., Hammer Ø., Olaussen S., Senger K. & Smelror M. 2018. Integrating subsurface and outcrop data of the Middle Jurassic to Lower Cretaceous Agardhfjellet Formation in central Spitsbergen. Norwegian Journal of Geology 98, 1–34,

Korčinskaja M.V. 1980. Rannenoriskaja fauna Arhipelaga Svalbard. (Early Norian fauna of the Svalbard Archipelago.) In D.V. Semevskij (ed.): Geologija osadnocnogo cehla Arhipelaga Svalbard. (Geology of the platform cover of the Svalbard Archipelago.) Pp. 30–43. Leningrad: Scientific Research Institute of Arctic Geology.

Launis A., Pott C.P. & Mørk A. 2014. A glimpse into the Carnian: Late Triassic plant fossils from Hopen, Svalbard. Norwegian Petroleum Directorate Bulletin 11, 129–136.

Leith T.L., Weiss H.M., Mørk A., Århus N., Elvebakk G., Embry A.F., Brooks P.W., Stewart K.R., Pčelina T.M., Bro E.G., Verba M.L., Danyushevskaya A. & Borisov A.V. 1993. Mesozoic hydrocarbon source-rocks of the Arctic region. In T.O. Vorren et al. (eds.): Artic geology and petroleum potential. Pp. 1–25. Asterdam: Elsevier.

Lord G.S., Johansen S.K., Støen S.J. & Mørk A. 2017. Facies development of the Late Triassic De Geerdalen Formation on Barentsøya, Wilhelmøya and NE Spitsbergen, Svalbard. Norwegian Journal of Geology 97, 33–62,

Lord G.S., Solvi K.H., Ask M., Mørk A., Hounslow M.W. & Paterson N.W. 2014. The Hopen Member: a new member of the Triassic De Geerdalen Formation, Svalbard. Norwegian Petroleum Directorate Bulletin 11, 81–96.

Lord G.S., Solvi K.H., Klausen T.G. & Mørk A. 2014. Triassic channel bodies on Hopen, Svalbard: their facies, stratigraphic significance and spatial distribution. Norwegian Petroleum Directorate Bulletin 11, 41–49.

Lundschien B.A., Høy T. & Mørk A. 2014. Triassic hydrocarbon potential in the northern Barents Sea: integrating Svalbard and stratigraphic core data. Norwegian Petroleum Directorate Bulletin 11, 3–20.

Mørk A. & Bjorøy M. 1984. Mesozoic source rocks on Svalbard. In A.M. Spencer (ed.): Petroleum geology of the North European Margin. Pp. 371–382. London: Graham & Trotman.

Mørk A.,Dallmann W.K., Dypvik, H., Johannessen E.P., Larssen G.B., Nagy J., Nøttvedt A., Olaussen S., Pčelina T.M. & Worsley D. 1999. Mesozoic lithostratigraphy. In W.K. Dallmann (ed.): Lithostratigraphic lexicon of Svalbard, Upper Paleozoic to Quaternary bedrock. Review and recommendations for nomenclature use. Pp. 127–214. Tromsø: Norwegian Polar Institute.

Mørk A., Embry A.F. & Weitschat W. 1989. Triassic transgressive–regressive cycles in the Sverdrup Basin, Svalbard and the Barents Sea. In J.D. Collinson (ed.): Correlation in hydrocarbon exploration. Pp. 113–130. London: Graham & Trotman.

Mørk A., Knarud R. & Worsley D. 1982. Depositional and diagenetic environments of the Triassic and Lower Jurassic succession of Svalbard. In A.F. Embry & H.R. Balkwill (eds.): Arctic geology and geophysics. Pp. 371–398. Calgary: Canadian Society of Petroleum Geologists.

Mørk A., Lord G.S., Solvi K.H. & Dallmann W.K. 2013. Geological map of Svalbard 1:100 000, sheet G14G Hopen. Norsk Polarinstitutt Temakart50. Tromsø: Norwegian Polar Institute.

Mørk A. & Smelror M. 2001. Correlation and non-correlation of high order circum-Arctic Mesozoic sequences. Polarforschung 69, 65–72.

Nasuti A., Ottemöller L., Dallmann W.K., Storheim B.M., Atakan K. & Olesen O. 2015. Geophysics. In W.K. Dallmann (ed.): Geoscience atlas of Svalbard. Report Series 148. Pp. 225–240. Tromsø: Norwegian Polar Institute.

Nagy J. & Berge S.H. 2008. Micropalaeontological evidence of brackish water conditions during deposition of the Knorringfjellet Formation, Late Triassic–Early Jurassic, Spitsbergen. Polar Research 27, 413–427,

NPD 2018. Norwegian Petroleum Directorate FactPages. Accessed on the internet at on 11 April 2018.

Olaussen S., Gloppen T.G., Johannessen E. & Dalland A. 1984. Depositional environment and diagenesis of Jurassic reservoir sandstones in the eastern part of Troms I area. In A.M. Spencer (ed.): Petroleum geology of the Northwest European Margin. Pp. 61–80. London: Graham & Trotman.

Olaussen S., Husteli B., Lord G.S., Rismyhr B., Johannessen E.P. & Mørk A. 2015. The Early Norian transition in Svalbard and the Barents Sea: a record of slowing down of basin subsidence, alteration of facies associations and shift of provenance and climate change. NGF Abstracts and Proceedings of the Geological Society of Norway 2015-4, 39–42,

Olaussen S., Larssen G.B., Helland-Hansen W., Johannessen E.P., Nøttvedt A., Riis F., Rismyhr B., Smelror M. & Worsley D. 2018. Mesozoic strata of Kong Karls Land, Svalbard, Norway; a link to the northern Barents Sea basins and platforms. Norwegian Journal of Geology 98, 1-69,

Olaussen S. & Rismyhr B. 2018. Large scale tectonics as controlling factor of the Upper Triassic to Middle Jurassic basin fills in Svalbard and the Barents Sea. Abstract submitted to the International Conference on Arctic Margins VIII, 11-14 June, Stockholm.

Osmundsen P.T., Braathen A., Rød R.S. & Hynne I. 2014. Styles of normal faulting and fault controlled deposition in the Triassic of Hopen and Edgeøya, Svalbard. Norwegian Petroleum Directorate Bulletin 11, 61–80.

Paterson N.W. & Mangerud G. 2015. Late Triassic (Carnian–Rhaetian) palynology of Hopen, Svalbard. Review of Paleobotany and Palynology 220, 98–119,

Paterson N.W., Mangerud G., Cetean C.G., Mørk A., Lord G.S., Klausen T.G. & Mørkved P.T. 2016. A multidisciplinary biofacies characterization of the Late Triassic (late Carnian–Rhaetian) Kapp Toscana Group on Hopen, Arctic Norway. Paleogeography Paleoclimatology Paleoecology 464, 16–42,

Pčelina T.M. 1972. K voprosu o vozraste osadočnoj tolšči ostrova Nadeždy (Sval’bard). (On the age of the sedimentary succession of the island of Hopen [Svalbard]). In V.N. Sokolov & N.D. Vasilevskaja (eds.): Mezozoiskie otloženija Sval’barda. (Mesozoic deposits of Svalbard.) Pp. 75–78. Leningrad: NIIGA Publishing.

Petrov G.A., Ronkin Yu L., Maslov A.V., Svyazhina I.A., Rybalka A.V. & Lepikhina O.P. 2008. Timing of the onset of collision in the central and northern Urals. Doklady Earth Sciences 422, 1050–1055,

Reading H.G. & Collinson J.D. 1996.Clastic coasts. In H.G. Reading (ed.): Sedimentary environments: processes, facies and stratigraphy. 3rd edn. Pp. 154–231. Oxford: Blackwell Science.

Reineck H.E. & Singh I.B. 1980. Depositional sedimentary environments. 2nd edn. Berlin: Springer.

Riis F., Lundschien B.A., Høy T., Mørk A. & Mørk M.B.E. 2008. Evolution of the Triassic shelf in the northern Barents Sea region. Polar Research 27, 318–338,

Rismyhr B., Bjærke T., Olaussen S., Mulrooney M.J. & Senger K. 2018. Facies, palynostratigraphy and sequence stratigraphy of the Wilhelmøya Sugroup (Upper Triassic–Middle Jurassic) in western central Spitsbergen, Svalbard. Norwegian Journal of Geology 99,

Ryseth A. 2014. Sedimentation at the Jurassic–Triassic boundary, south-west Barents Sea: indication of climate change. In A.W. Martinius et al. (eds.): From depositional systems to sedimentary successions on the Norwegian Continental Margin. Pp. 187–214, Oxford: Wiley Blackwell.

Scott R., Howard J., Guo L., Schekoldin R. & Pease V. 2010. Offset and curvature of the Novaya Zemlya fold-and-thrust belt, Arctic Russia. In B.A. Vining & S.C. Pickering (eds.): Petroleum geology: from mature basins to new frontiers. Proceedings of the 7th Petroleum Conferences. Pp. 645–657. London: The Geological Society.

Senger K. 2017. Integrated thermo-baric modelling of the hydrate stability zone onshore Svalbard, Arctic Norway. Paper presented at the 9th International Conference on Gas Hydrates, 25–30 June, Denver.

Smelror M., Larssen G.B., Olaussen S., Rømuld A. & Williams R. 2018. Late Triassic to Early Cretaceous palynostratigraphy of Kong Karls Land, Svalbard, Arctic Norway, with correlations to Franz Josef Land, Arctic Russia. Norwegian Journal of Geology 98, 1–31,

Smith D.G. 1974. Late Triassic pollen and spores from the Kapp Toscana Formation, Hopen, Svalbard—a preliminary account. Review of Palaeobotany and Palynology 17, 175–178,

Smith D.G., Harland W.B. & Hughes N.F. 1975. Geology of Hopen, Svalbard. Geological Magazine 112, 1–23.

Smith D.G., Harland W.B., Hughes N.F. & Pickton C.A.G. 1976. The geology of Kong Karls Land, Svalbard. Geological Magazine 113, 193–304.

Solvi K.H. 2013.Visualize and interpret the geometry, heterogeneity and lateral continuation of channel bodies in the De Geerdalen Formation at Hopen. Master’s thesis, Norwegian University of Science and Technology, Trondheim.

Throndsen T. 1982. Vitrinite reflectance of coals and dispersed organic matter in Tertiary deposits in the Advendalen area, Svalbard Polar Research 1(2), 77–91,

Tozer E.T. & Parker J.R. 1968. Notes on the Triassic biostratigraphy of Svalbard. Geological Magazine 105, 526–542.

Vigran J.O., Mangerud G., Mørk A., Worsley D. & Hochuli P.A. 2014. Palynology and geology of the Triassic succession of Svalbard and the Barents Sea. Geological Survey of Norway, Special Publication 14. Trondheim: Geological Survey of Norway.

Worsley D. 1973. The Wilhelmøya Formation—a new lithostratigraphic unit from the Mesozoic of eastern Svalbard. Norsk Polarinstitutt Årbok 1971, 7–16.

Worsley D. 2008. The post-Caledonian development of Svalbard and the Western Barents Sea. Polar Research 27, 318–338,

Worsley D., Johansen R. & Kristensen S.E. 1988. The Mesozoic and Cenozoic successions of Tromsøflaket. Norwegian Petroleum Directorate Bulletin 4, 42–65.
How to Cite
Lord, G., Mørk, M. B., Mørk, A., & Olaussen, S. (2019). Sedimentology and petrography of the Svenskøya Formation on Hopen, Svalbard: an analogue to sandstone reservoirs in the Realgrunnen Subgroup. Polar Research, 38.
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