Jenö Nagy

• Bruhn, Rikke; Nagy, Jenø; Smelror, Morten; Dypvik, Henning; Glimsdal, Sylfest & Pegrum, Richard [Show all 7 contributors for this article] (2022). Shaking and splashing—A case study of far-field effects of the Mjølnir asteroid impact on depositional environments in the Barents Sea. Basin Research. ISSN 0950-091X. doi: 10.1111/bre.12725. Full text in Research Archive
• Nagy, Jenø & Hendrickson, Randi M Støkken (2022). Hyposaline to hypoxic foraminiferal facies and stratigraphy of Middle Jurassic to basal Cretaceous deposits of the Trøndelag Platform, mid-Norwegian shelf. Palaeogeography, Palaeoclimatology, Palaeoecology. ISSN 0031-0182. 589. doi: 10.1016/j.palaeo.2022.110831.
• Hjalmarsdottir, Hanna Rosa; Hammer, Øyvind; Nagy, Jenø & Grundvåg, Sten-Andreas (2021). Foraminiferal stratigraphy and palaeoenvironment of a storm-influenced marine shelf: upper Aptian – lower Albian, Svalbard, Arctic Norway. Cretaceous research (Print). ISSN 0195-6671. 130. doi: 10.1016/j.cretres.2021.105033. Show summary

  This study presents the first record of foraminifera from the Lower Cretaceous Carolinefjellet Formation on the Svalbard archipelago, Arctic Norway. The Svalbard foraminiferal assemblages are dominated by agglutinated forms with a subordinate calcareous component. Several stratigraphically important species are recognised, and four assemblage zones are established: 1) Serovaina loetterlei Zone of middle Aptian or lower, 2) Ammobaculites wenonahae Zone of the middle Aptian, 3) Gaudryina tailleuri Zone of the upper Aptian, 4) Verneuilinoides borealis Zone of the lower Albian. The assemblages exhibit characteristic Boreal features, previously reported from the North Slope of Alaska, Arctic Canada, Western Siberia, and older Mesozoic strata in Svalbard. The study therefore allows for Circum-Arctic correlations and the extensions of stratigraphic ranges of several Boreal species. The investigated succession exhibits a large-scale fining-upwards trend. The lower part (the Dalkjegla Member) is characterised by abundant hummocky cross-stratified and wave-ripple cross-laminated sandstone beds, indicating deposition on a storm-dominated shelf. The upper part (the Innkjegla Member) is dominated by mudstones containing strata-bound siderite concretions and carbonate-cemented sandstone beds, suggesting deposition under more quiescent, middle to outer shelf conditions. An upwards increase in trace fossil diversity and degree of bioturbation, in concert with expanding foraminiferal diversity and morphogroup variability, reflects a long-term deepening of the shelf with fluctuating oxygen conditions. In combination with XRF data, diversity statistics, and morphogroup application, the present study thus sheds a new light on higher frequency palaeoenvironmental changes in upper part of the Carolinefjellet Formation

• Bujtor, László & Nagy, Jenø (2021). Fauna, palaeoecology and ecotypes of the Early Cretaceous sediment hosted hydrothermal vent environment of Zengővárkony (Mecsek Mountains, Hungary). Palaeogeography, Palaeoclimatology, Palaeoecology. ISSN 0031-0182. 564. doi: 10.1016/j.palaeo.2020.110179. Full text in Research Archive
• Hjalmarsdottir, Hanna Rosa; Nakrem, Hans Arne & Nagy, Jenø (2018). Environmental significance and taxonomy of well preserved foraminifera from Upper Jurassic – Lower Cretaceous hydrocarbon seep carbonates, central Spitsbergen. Micropaleontology. ISSN 0026-2803. 64(5-6), p. 435–480. Full text in Research Archive Show summary

  Five hydrocarbon seep carbonate structures in the upper part of the Slottsmøya Member (Agardhfjellet Formation) in central Spitsbergen have been sampled and processed for foraminifera. The carbonates have been found to contain excellently preserved agglutinated assemblages, in contrast to the diagenetically deformed assemblages in the adjacent shales. In total 15 genera and 35 agglutinated species are recognised in the palaeoseeps. The pristine condition of the foraminiferal tests allows for detailedmorphological documentation of 21 species, ofwhich the following six are proposed as new: Reophax pyriloculus n. sp., Haplophragmoides perlobatus n. sp., Labrospira lenticulata n. sp., Ammobaculites deflectus n. sp., Ammobaculites knorringensis n. sp. and Textularia pernana n. sp.. Depositional environment of the carbonate palaeoseeps is interpreted to be similar to that of a normalmarine shelf, as opposed to the previously documented restricted (hypoxic) environment of the adjacent shales. Morphogroup analysis of assemblages in the palaeoseeps reveals that over 89% of genera in the seep carbonate bodies are categorised as surficial/shallow infaunal to deep infaunal. The same morphogroup component in the shale succession onlymakes up 31.5% of the total genera. Agradual shift can be seen in the shale assemblages from almost exclusively epifaunalmorphogroups in the lower part to a dominating surficial to infaunal component in the samples closest to the palaeoseep stratigraphic levels, which translates to an upwards decreasing oxygen level trend. The foraminifera date the palaeoseeps as late Volgian – late Ryazanian, and the ages for each seep structure are constrained by previously reported associated ammonite occurrences. Some species of foraminifera occurring in the palaeoseeps are possible candidates for extended stratigraphic ranges.

• Nagy, Jenø & Naoroz, Mufak Said (2018). Changing depositional environments reflected by foraminifera in a transgressive-regressive sequence of the Lower Cretaceous on Spitsbergen. Palaeogeography, Palaeoclimatology, Palaeoecology. ISSN 0031-0182. 511, p. 144–167. doi: 10.1016/j.palaeo.2018.07.026.
• Hess, Silvia & Nagy, Jenø (2017). New foraminiferal species from the Kapp Toscana Group (Carnian to Bathonian) of central Spitsbergen. In Kaminski, M.A. & Alegret, L. (Ed.), Proceedings of the Ninth International Workshop on Agglutinated Foraminifera. Grzybowski Foundation. ISSN 978-83-941956-1-8. p. 65–73. doi: 10.2307/1486047.
• Nagy, Jenø; Tovar, Francisco J Rodríguez & Reolid, Matias (2016). Environmental significance of Ophiomorpha in a transgressive-regressive sequence of the Spitsbergen paleocene :. Polar Research. ISSN 0800-0395. 35. doi: 10.3402/polar.v35.24192. Full text in Research Archive
• Nagy, Jenø (2016). A sequence stratigraphic model of benthic foraminiferal facies trends with Triassic and Jurassic examples. Marine Micropaleontology. ISSN 0377-8398. 122, p. 99–114. doi: 10.1016/j.marmicro.2015.12.003. Full text in Research Archive
• Rodríguez-Tovar, Francisco J.; Nagy, Jenø & Reolid, Matias (2014). Palaeoenvironment of Eocene prodelta in Spitsbergen recorded by the trace fossil Phycosiphon incertum. Polar Research. ISSN 0800-0395. 33:23786(2014). doi: 10.3402/polar.v33.23786.
• Mueller, Steven; Veld, Harry; Nagy, Jenø & Kürschner, Wolfram Michael (2014). Depositional history of the upper triassic kapp toscana group on svalbard, Norway, inferred from palynofacies analysis and organic geochemistry. Sedimentary Geology. ISSN 0037-0738. 310, p. 16–29. doi: 10.1016/j.sedgeo.2014.06.003.
• Hess, Silvia; Nagy, Jenø & Laursen, Gitte Vestergaard (2014). Benthic foraminifera from the lower jurassic transgressive mudstones of the south-western barents sea-a possible high-latitude expression of the global Pliensbachian-Toarcian turnover? Polar Research. ISSN 0800-0395. 33:20206. doi: 10.3402/polar.v33.20206.
• Nagy, Jenø (2013). Sequence stratigraphic application of foraminiferal facies patterns: Triassic and Jurassic examples. In Nakrem, Hans Arne & haukdal, gunn (Ed.), NGF Vinterkonferansen 2013. Oslo, 8-20. January, 2013. NGF Abstracts and Proceedings of the Geological Society of Norway 1 (2013). Norsk Geologisk Forening. ISSN 978-82-92-39478-6. p. 93–93. doi: 10.1016/j.marmicro.2015.12.003.
• Nagy, Jenø; Jargvoll, David; Dypvik, Henning; Jochmann, Malte & Riber, Lars (2013). Environmental changes during the Paleocene-Eocene Thermal Maximum in Spitsbergen as reflected by benthic foraminifera. Polar Research. ISSN 0800-0395. 32. doi: 10.3402/polar.v32i0.19737.
• Hjalmarsdottir, Hanna Rosa; Nakrem, Hans Arne & Nagy, Jenø (2012). Foraminifera from Late Jurassic - Early Cretaceous hydrocarbon seep carbonates, central Spitsbergen, Svalbard - preliminary results. Norsk Geologisk Tidsskrift. ISSN 0029-196X. 92(2-3), p. 157–165. Show summary

  Mixed calcareous-agglutinated benthic foraminiferal assemblages have been obtained from five hydrocarbon seep carbonate structures in the upper Slottsmøya Member (Agardhfjellet Formation) in central Spitsbergen, Svalbard. The composition of the agglutinated component is comparable to faunas previously described from the surrounding dark shales of the Slottsmøya Member, as well as from deposits of Arctic Russia and other areas of the Boreal Realm. Calcareous foraminifera are observed only in thin-sections. The foraminifera date the hydrocarbon seep bodies as Late Volgian – Late Ryazanian; an age determination in part slightly divergent from ammonite datings previously recorded from these carbonates. This is the first systematic report of foraminifera from seep structures developed at the Jurassic-Cretaceous transition.

• Reolid, Matias; Rodríguez-Tovar, Francisco J. & Nagy, Jenø (2012). Ecological replacement of Valanginian agglutinated foraminifera during a maximum flooding event in the Boreal realm (Spitsbergen). Cretaceous research (Print). ISSN 0195-6671. 33(1), p. 196–204. doi: 10.1016/j.cretres.2011.10.003.
• Silye, L; Nagy, Jenø & Filipescu, Sorin (2011). Ammodiscus aff. Gullmarensis in the Sarmatian (Middle Miocene) of the Transylvanian Basin, Romania. In Kaminski, M.A. & Filipescu, Sorin (Ed.), Proceedings of the Eight International Workshop on Agglutinated Foraminifera, Cluj-Napoca, Romania, September 7-13, 2008. Grzybowski Foundation. ISSN 978-973-595-260-0. p. 311–315.
• Nagy, Jenø & Murray, John W. (2011). Paralic foramimiferal assemblages from the Paleocene Firkanten Formation of Spitsbergen. In Kaminski, M.A. & Filipescu, Sorin (Ed.), Proceedings of the Eight International Workshop on Agglutinated Foraminifera, Cluj-Napoca, Romania, September 7-13, 2008. Grzybowski Foundation. ISSN 978-973-595-260-0. p. 137–149.
• Dypvik, Henning; Riber, Lars; Burca, Florin; Ruther, Denise Christina; Jargvoll, David & Nagy, Jenø [Show all 7 contributors for this article] (2011). The Paleocene-Eocene thermal maximum (PETM) in Svalbard - clay mineral and geochemical signals. Palaeogeography, Palaeoclimatology, Palaeoecology. ISSN 0031-0182. 302(3-4), p. 156–169. doi: 10.1016/j.palaeo.2010.12.025.
• Nagy, Jenø; Hess, Silvia; Dypvik, Henning & Bjærke, Tor (2011). Marine shelf to paralic biofacies of Upper Triassic to Lower Jurassic deposits in Spitsbergen. Palaeogeography, Palaeoclimatology, Palaeoecology. ISSN 0031-0182. 300(1-4), p. 138–151. doi: 10.1016/j.palaeo.2010.12.018.
• Nagy, Jenø & Murray, John W. (2011). Paralic foraminiferal assemblages from the Paleocene Firkanten Formation of Spitsbergen. Foraminiferal assemblages and paleoenvironmental interpretation of the Cretaceous Carolinefjellet Formation, Spitsbergen. ISSN 1400-3821. p. 137–150.
• Nagy, Jenø & Bjørlykke, Knut (2010). Stratigraphy. In Bjørlykke, Knut (Eds.), Petroleum Geoscience: From Sedimentary Environments to rock Physics. Springer Science+Business Media B.V.. ISSN 978-3-642-02331-6. p. 213–234.
• Reolid, Matias; Philippe, Marc; Nagy, Jenø & Abad, Isabel (2010). Preservation of phosphatic wood remains in marine deposits of the Brentskardhaugen Bed (Middle Jurassic) from Svalbard (Boreal Realm). Facies. ISSN 0172-9179. 56(4), p. 549–566. doi: 10.1007/s10347-010-0219-z.
• Reolid, Matias; Nagy, Jenø & Rodriguez-Toyar, FJ (2010). Ecostratigraphic trends of Jurassic agglutinated foraminiferal assemblages as a response to sea-level changes in shelf deposits of Svalbard (Norway). Palaeogeography, Palaeoclimatology, Palaeoecology. ISSN 0031-0182. 293(1-2), p. 184–196. doi: 10.1016/j.palaeo.2010.05.019.
• Nagy, Jenø; Hess, Silvia & Alve, Elisabeth (2010). Environmental significance of foraminiferal assemblages dominated by small-sized Ammodiscus and Trochammina in Triassic and Jurassic delta-influenced deposits. Earth-Science Reviews. ISSN 0012-8252. 99(1-2), p. 31–49. doi: 10.1016/j.earscirev.2010.02.002.
• Nagy, Jenø; Reolid, Matias & Rodriguez-Tovar, F.J. (2009). Foraminiferal morphogroups in dysoxic shelf deposits from the Jurassic of Spitsbergen. Polar Research. ISSN 0800-0395. 28(2), p. 214–221. doi: 10.1111/j.1751-8369.2009.00112.x.
• Reolid, Matias; Rodriguez-Tovar, F.J.; Nagy, Jenø & Oloriz, F. (2008). Benthic foraminiferal morphogroups of mid to outer shelf environments of the Late Jurassic (Prebetic Zone, southern Spain): Characterization of biofacies and environmental significance. Palaeogeography, Palaeoclimatology, Palaeoecology. ISSN 0031-0182. 261(3-4), p. 280–299. doi: 10.1016/j.palaeo.2008.01.021.
• Reolid, Matias & Nagy, Jenø (2008). Jurassic transgressive-regressive cycles in carbonate and siliciclastic shelf facies: different response of foraminiferal assemblage trends to sea-level changes. In Kaminski, M.A. & Coccioni, Rodolfo (Ed.), Proceedings of the Seventh International Workshop on Agglutinated Foraminifera (Urbino, Italy, October 2-8, 2005). The Grzybowski Foundation. ISSN 9788392486930. p. 199–223.
• Nagy, Jenø & Berge, S.H. (2008). Micropalaeontological evidence of brackish water conditions during deposition of the Knorringfjellet Formation, Late Triassic-Early Jurassic, Spitsbergen. Polar Research. ISSN 0800-0395. 27(3), p. 413–427. doi: 10.1111/j.1751-8369.2007.00038.x.
• Reolid, Matias; Nagy, Jenø; Rodriguez-Tovar, F.J. & Oloriz, F. (2008). Foraminiferal assemblages as palaeoenvironmental bioindicators in Late Jurassic epicontinental platforms: Relation with trophic conditions. Acta Palaeontologica Polonica. ISSN 0567-7920. 53(4).
• Midtkandal, Ivar; Nystuen, Johan Petter & Nagy, Jenø (2007). Paralic sedimentation on an epicontinental ramp shelf during a full cycle of relative sea-level fluctuation; the Helvetiafjellet Formation in Nordenskiold Land, Spitsbergen. Norsk Geologisk Tidsskrift. ISSN 0029-196X. 87, p. 343–359.
• Nagy, Jenø (2005). Delta-influenced foraminiferal facies and sequence stratigraphy of Paleocene deposits in Spitsbergen. Palaeogeography, Palaeoclimatology, Palaeoecology. ISSN 0031-0182. 222, p. 161–179.
• Dypvik, Henning; Mørk, Atle; Smelror, Morten; Sandbakken, Pål; Tsikalas, Filippos & Vigran, Jorun os [Show all 12 contributors for this article] (2004). Impact breccia and ejecta from the Mjølnir crater in the Barents Sea - The Rangnarok Formation and Sindre Bed. Norsk Geologisk Tidsskrift. ISSN 0029-196X. 84, p. 143–167.
• Bremer, Gerd Merethe A.; Smelror, Morten; Nagy, Jenø & Vigran, Jorunn Os (2004). Biotic Responses to the Mljønir Meteorite Impact, Barents Sea: Evidence from a Core Drilled within the Crater, Cratering in Marine Environments and on Ice. Springer. ISSN 3-540-40668-9. p. 21–38.
• Smelror, Morten; Kelly, Simon R.A.; Dypvik, Henning; Mørk, Atle; Nagy, Jenø & Tsikalas, Filippos (2001). Mjølnir (Barents Sea) meteorite impact ejecta offers a Volgian-Ryazanian boundary marker. Newsletters on stratigraphy. ISSN 0078-0421. 38(2/3), p. 129–140.
• Nagy, Jenø & Basov, V. (1999). Revised foraminiferal stratigraphy of Bathonian to Ryazanian deposits in Spitsbergen. Micropaleontology. ISSN 0026-2803. 44, p. 217–255.

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• Nagy, Jenø & Hendrickson, Randi M Støkken (2019). Stratigraphy of Middle Jurassic to basal Cretaceous foraminiferal facies reflecting hyposaline and hypoxic waters on the mid-Norwegian shelf. In Fekete, Kamil; Michalik, Jozef & Rehakova, Daniela (Ed.), XIVth Jurassica Conference &Workshop of the ICS Berriasian Group. Field Trip Guide and Abstracts Book. June 10–14, 2019 Bratislava, Slovakia.. Slovak Academy of Sciences & Faculty of Natural Sciences, Comenius University. ISSN 978­80­85754­41­4. p. 150–151.
• Nagy, Jenø & Hendrickson, Randi M Støkken (2019). Stratigraphy of Middle Jurassic to basal Cretaceous foraminiferal facies reflecting hyposaline and hypoxic waters on the mid-Norwegian shelf.
• Planke, Sverre; Zuchuat, Valentin; Svensen, Henrik; Hammer, Øyvind; Braathen, Alvar & Silkoset, Petter [Show all 27 contributors for this article] (2016). Coring and High-Resolution Imaging of the Permian-Triassic Boundary in Deltadalen, Svalbard.
• Planke, Sverre; Twitchett, Richard; Zuchuat, Valentin; Svensen, Henrik; Hammer, Øyvind & Braathen, Alvar [Show all 22 contributors for this article] (2015). Coring the Permian-Triassic Boundary in Deltadalen, Svalbard.
• Rismyhr, Bjarte; Olaussen, Snorre; Bjærke, Tor & Nagy, Jenø (2015). Facies characteristics, stratigraphic architecture and sequence stratigraphy of the Upper Triassic-Middle Jurassic Wilhelmøya Subgroup on eastern Spitsbergen - A possible analogue for the Realgrunnen Subgroup along platform margins and internal basin highs in the Barents Sea.
• Nagy, Jenø & Hendrichson, R.M. (2014). Middle Jurassic to basal Cretaceous foraminifral stratigraphy and water mass features on the Mid-Norwegian shelf.
• Hess, Silvia; Nagy, Jenø & Laursen, G.V. (2013). Benthic foraminiferal assemblages in Early Jurassic deposits of the south-western Barents Sea. In Nakrem, Hans Arne & haukdal, gunn (Ed.), NGF Vinterkonferansen 2013. Oslo, 8-20. January, 2013. NGF Abstracts and Proceedings of the Geological Society of Norway 1 (2013). Norsk Geologisk Forening. ISSN 978-82-92-39478-6. p. 58–58.
• Nagy, Jenø (2013). A sequence stratigraphic model for foraminiferal facies patterns Applied on Triassic and Jurassic sections mainly from Spitsbergen.
• Nakrem, Hans Arne; Hammer, Øyvind; Hryniewicz, Krzysztof; Rousseau, Julie; Nagy, Jenø & Hjálmarsdóttir, Hanna Rosa [Show all 9 contributors for this article] (2013). Micro and macro-fauna in the Jurassic-Cretaceous Slottsmøya Mbr. (Agardhfjellet Fm.), Central Spitsbergen. In Nakrem, Hans Arne & haukdal, gunn (Ed.), NGF Vinterkonferansen 2013. Oslo, 8-20. January, 2013. NGF Abstracts and Proceedings of the Geological Society of Norway 1 (2013). Norsk Geologisk Forening. ISSN 978-82-92-39478-6. p. 93–94.
• Nagy, Jenø (2012). Sequence stratigraphic Application of foraminiferal facies patterns: Triassic and Jurassic examples. Grzybowski Foundation Special Publication. 18, p. 66–67.
• Nagy, Jenø (2011). Biotic responses to the Paleocene-Eocene thermal maximum in Spitsbergen.
• Nagy, Jenø (2010). The Paleogene foraminiferal succession of Svalbard on the margin of a brackish Arctic Ocean.
• Hess, Silvia & Nagy, Jenø (2010). Environmental significance of foraminiferal facies combined with sedimentary data in Late Triassic to Middle Jurassic formations of Spitsbergen.
• Reolid, Matias; Nagy, Jenø & Philippe, Marc (2010). Taphonomy of phosphatic wood remains in marine deposits of the Middle Jurassic (Brentskardhaugen Bed) of Spitsbergen.
• Reolid, Matias; Nagy, Jenø & Rodriguez-Tovar, F.J. (2010). Foraminiferalassemblages and oxygen restricted biofacies of Jurassic shelf deposits (Svalbard): ecostratigraphy and sea-level changes.
• Dypvik, Henning; Riber, Lars; Burca, Florin; Ruther, Denise; Jargvoll, David & Nagy, Jenø (2010). Hypoxia developed at the Paleocene-Eocene thermal maximum in Svalbard, Norway.
• Nagy, Jenø; Hess, Silvia & Alve, Elisabeth (2010). Facies assessments of paralic deposits based on foraminifera: Triassic-Jurassic of the northwest European margin.
• Hess, Silvia; Nagy, Jenø; Dypvik, Henning & Bjærke, Tor (2010). Paralic biofacies and stratigraphy of Late Triassic to Middle Jurassic deposits of the Barents Sea region.
• Nagy, Jenø; Dypvik, Henning; Jargvoll, David & Riber, Lars (2010). Features of a semi-isolated Arctic Ocean and the Paleocene-Eocene Thermal Maximum (PETM)reflected in the Paleogene foraminiferal facies of Spitsbergen.
• Dypvik, Henning; Riber, Lars; Burca, Florin; Ruther, Denise; Jargvoll, David & Nagy, Jenø (2010). Mineralogical shifts at the paleocene-Eocene thermal maximum (PETM) event, Svalbard.
• Nagy, Jenø (2010). Foraminiferal responses to the Paleocene-Eocene Thermal Maximum in Spitsbergen.
• Hess, Silvia & Nagy, Jenø (2008). Foraminiferal assemblages of Upper Triassic to Middle Jurassic offshore shelf to marginal marine deposits of the Barents Sea area. Grzybowski Foundation Special Publication. 14, p. 20–21.
• Nagy, Jenø (2008). Agglutinated foraminiferal assemblages of the Paleogene of Spitsbergen: responses to a semi-isolated Arctic Ocean. Grzybowski Foundation Special Publication. 14, p. 37–37.
• Reolid, Matias; Nagy, Jenø & Hess, Silvia (2008). Agglutinated foraminiferal morphogroups in dysoxic shelf deposits from the Jurassic of Spitsbergen. Grzybowski Foundation Special Publication. 14, p. 50–50.
• Silye, L & Nagy, Jenø (2008). Agglutinated foraminifera from the Middle Miocene (Sarmatian) of the Transylvanian Basin, Romania. Grzybowski Foundation Special Publication. 14, p. 56–56.
• Nagy, Jenø (2008). Paleogene foraminiferal facies of Spitsbergen reflecting features of semiisolated Arctic ocean: results of the WUN PACE initiative.
• Hess, Silvia & Nagy, Jenø (2008). Micropaleontological evidence of changing paralic environments in Mesozoic deposits of the Barents Sea area.
• Hess, Silvia; Nagy, Jenø & Bjærke, T. (2008). Environmental significance of foraminiferal facies in Mesozoic deposits (Late Triassic to Middle Jurassic) of Spitsbergen.
• Reolid, Matias; Nagy, Jenø & Hess, Silvia (2008). Foraminiferal morphogroups and sea-level changes in Jurassic shelf deposits of Svalbard (Artic Realm).
• Ruther, Denise; Burca, Florin; Nagy, Jenø & Dypvik, Henning (2008). The Palaeogene depositional environments of Frysjaodden to Hollendardalen formations, Svalbard.
• Reolid, Matias; Nagy, Jenø & Rodriguez-Tovar, F.J. (2007). Agglutinated foraminiferal morphogroups in Jurassic shelf deposits from Spitsbergen.
• Nagy, Jenø; Berge, S.H. & Hess, Silvia (2007). Foraminiferal facies suggests brackish water conditions during deposition of the Knorringfjellet Formation; Late Triassic - Early Jurassic of Spitsbergen.
• Hess, Silvia & Nagy, Jenø (2007). Environmental significance of foraminiferal facies combined with sedimentary data in Late Triassic to Middle Jurassic formations of Spitsbergen.
• Hess, Silvia & Nagy, Jenø (2007). Presentation of the project - Paralic biofacies and stratigraphy of Late Triassic to Middle Jurassic deposits of the Barents Sea region.
• Reolid, Matias & Nagy, Jenø (2005). Jurassic transgressive-regressive cycles in carbonate and siliciclastic shelf facies: comparison of foraminiferal aasemblades.
• Nagy, Jenø; Randi, Hendrickson & Grønseth, Ole (2005). Foraminiferal stratigraphy and facies of Middle Jurassic to lowermost Cretaceous deposits of the Mid-Norwegian Shelf.
• Grøseth, Ole; Nagy, Jenø & Karlsen, Dag (2005). Organic geochemistry and foraminiferal facies of the Jurassic (Alenian - Kimmeridgian) of the Mid-Norwegian shelf.
• Dypvik, Henning; Mørk, Atle; Smelror, Morten; Tsikalas, Filippos; Sandbakken, Pål T. & Bremer, G.M.A. [Show all 8 contributors for this article] (2004). The Mjølnir impact crater.
• Dypvik, Henning; Smelror, Morten; Mørk, Atle; Gabrielsen, Roy Helge; Sandbakken, Pål T. & Nagy, Jenø [Show all 9 contributors for this article] (2003). Mjølnirkrateret i Barentshavet – en hilsen fra verdensrommet. Gråsteinen : et geofaglig tidsskrift for alle. ISSN 0807-4801. 8.
• Bremer, G.M.A.; Smelror, Morten & Nagy, Jenø (2003). Biotic responses to the Mjølnir meteorite impact in the Barents Sea.
• Bremer, Gerd M Andersen; Nagy, Jenø & Dypvik, Henning (2001). Foraminiferal stratigraphy at the Jurassic-Cretaceous transition reflecting the Mjølnir meteor impact (Barnets Sea). Show summary

  Foraminiferal assemblages in core samples have been studied from two cores (7430/10-U-01 and 7329/03-U-01) drilled on the southern Barents Shelf. Core 7329/03-U-01 is taken on the central high of the Mjølnir impact crater, while 7430/10-U-01 is located about 30 km northeast of the same crater. According to earlier publications (Gudlaugsson 1993; Dypvik et al. 1996; Tsikalas et al. 1998), the crater is formed by a bolide impact close to the Jurassic-Cretaceous boundary. The lower part of core 7329/03-U-01 consists of strongly deformed sandstones and shales. The deformation is attributed to the impact. The foraminiferal assemblages and lithologies of this interval show similarities with the Wilhelmøya Subgroup (Norian to Toarcian) in Spitsbergen. The upper part of the impact-affected unit is interpreted as suspension deposits, and contains impoverished faunas and also these are similar to those of the Wilhelmøya Subgroup. The upper, unaffected part of the core contains almost exclusively calcareous foraminifera and are typical for the Ryazanian to probably Valanginian interval. These faunas are dominted by epifaunal and partly epiphytic morphotypes. In core 7430/10-U-01 the impact is marked by a mudflake conglomerate associated with other impact indicators such as shocked quartz and Ir-anomaly. The interval (ca. 1 m) above these indicators is barren of foraminifera or contains very few, probably redeposited specimens. Rich Ryazanian to probably Valanginian calcareous faunas occur above this interval.

• Bremer, Gerd M Andersen; Nagy, Jenø & Dypvik, Henning (2001). Foraminiferal stratigraphy at the Jurassic/Cretaceous transition reflecting the Mjølnir impact (Barents Sea). Show summary

  Foraminiferal assemblages in core samples have been studied from two cores (7430/10-U-01 and 7329/03-U-01) drilled on the southern Barents Shelf. Core 7329/03-U-01 is taken on the central high of the Mjølnir crater, while 7430/10-U-01 is located about 30 km northeast of the same Mjølnir structure. According to earlier publications, the crater is formed by a bolide impact at the Jurassic/Cretaceous boundary. The lower part of core 7329/03-U-01 consists of strongly deformed sandstones and shales. The deformation is attributed to the impact. The foraminiferal assemblages in this interval show similarities with the Wilhelmøya Subgroup in Spitsbergen (Norian to Toarcian in age). The upper part of the impact-affected unit is interpreted as suspension deposits and contains impoverished faunas similar to those of the Wilhelmøya Subgroup. The upper, unaffected part of the core contains typical Ryazanian to probably Valanginian faunas. In core 7430/10-U-01 the impact is marked by a mudflake conglomerate associated with other impact indicators as shocked quartz and Ir-anomaly. The interval (ca. 1 m) above these indicators is barren for foraminifera or contains very few, probably redeposited specimens. Rich Ryazanian to probably Valanginian faunas occur above this interval. In both cores the unaffected intervals consist mainly of organic rich shales.

• Bremer, Gerd M Andersen; Nagy, Jenø & Dypvik, Henning (2001). Searching the foraminiferal succession for responses to the Mjølnir meteorite impact. Show summary

  Foraminiferal assemblages have been studied in core samples from two IKU deep boreholes (7430/10-U-01 and 7329/03-U-01) drilled on the southern Barents Shelf. 7329/03-U-01 is from the central high of the Mjølnir impact crater, while 7430/10-U-01 is located about 30 km northeast of the crater. Earlier publications (Gudlaugsson 1993; Dypvik et al. 1996; Tsikalas et al. 1998; Smelror et al. 2001), identified the crater as a bolide impact close to the Jurassic-Cretaceous boundary. The core from 7329/03-U-01 is divided into several depositional intervals of which the lower, and major, one is comprised of strongly deformed sandstones and shales. This deformation has been attributed to the impact. The succeeding and much thinner interval has been interpreted as impact suspension deposits. The impoverished foraminiferal assemblages and the lithologies of both these intervals show similarities with the Wilhelmøya Subgroup (Norian to Toarcian) in Spitsbergen. The upper, unaffected part of the core contains almost exclusively calcareous foraminifera, typical for the Ryazanian to Valanginian interval. These faunas are dominated by epifaunal and partly epiphytic morphotypes. In the 7430/10-U-01 core, the impact is marked by a mudflake conglomerate associated with other indicators such as shocked quartz and Ir-anomaly. The interval (ca. 1 m) immediately above these indicators is barren of foraminifera or contains only very few, probably redeposited specimens.

• Bremer, Gerd M Andersen; Dypvik, Henning; Smelror, Morten & Nagy, Jenø (2001). Biotic responses to the marine Mjølnir meteorie impact (Volgian-Ryazanian boundary, Barents Sea). Show summary

  The Mjølnir impact in the central Barents Sea (Dypvik et al. 1996) is one of very few occurrences allowing detailed studies on both pre- and post-impact sediments and marine biotas. Preliminary studies from, both within and outside the impact structure give no indications of any significant biotic extinctions related the Mjølnir impact. Low diversity invertebrate faunas with ammonites and bivalves (mainly Buchia), and low diversity foraminiferal assemblages (mainly agglutinated species) typically occur both below and above the impact influenced strata (Bremer et al. 2001, Smelror et al. 2001). There also seem to be no major extinction or changes in diversity of the marine microfloras related to the impact event. This is in accordance with Jansa (1993)'s lower limit bolide size for extinction The overall composition of the microfossil assemblages show, however, a significant turnover within the impact-influenced strata. Prolific blooms of marine prasinophycean algae, indicating ocean eutrophication, are noted in the oldest post impact crater deposits (core 7329/03-U-01), in ejecta-bearing strata 30 km outside the impact structure (core 7430/10-U-01) and in the Volgian-Ryazanian boundary beds on Svalbard and off northern Norway (Smelror et al., in press). These blooms probably were induced by the large amounts of nutrients released in the water-column by the impact, subsequent collapse of the crater, and the released tsunamis.

• Solheim, Anders; Forsberg, Carl F.; Elverhøi, Anders; Eidvin, Tor; Nagy, Jenø & Smelror, Morten (1997). Glacial evolution of the Svalbard margin; an update based on results from Site 986, ODP Leg 162.
• Alve, Elisabeth; Husum, Katrine; Vestergard, L.G.; Murray, John W. & Nagy, Jenø (2007). Palaeoenvironmental interpretation of fossil benthic foraminiferal assemblages using modern analogues: possibilities and limitations. Statoil/Hydro.
• Nagy, Jenø (2007). Depositional environments and stratigraphy. (Til bruk i undervisning i GEO 4220). Unipub forlag.
• Nagy, Jenø (2004). Trace fossils and their faces significance: an introduction. Kompendium i GEO 4220. Institutt for geofag.
• Nagy, Jenø (2003). Microfossils and facies. Unipub forlag.

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