Felix Marcel Gradstein

Vitenskapelige publikasjoner

• Forel, Marie-Béatrice; Charbonnier, Sylvain; Gale, Luka; Tribovillard, Nicolas; Martinez-Soares, Pablo & Bergue, Cristianini Trescastro [Vis alle 8 forfattere av denne artikkelen] (2024). A new chemosynthetic community (ostracods, foraminifers, echinoderms) from Late Jurassic hydrocarbon seeps, south-eastern France Basin. Geobios. ISSN 0016-6995. doi: 10.1016/j.geobios.2023.12.006. Fulltekst i vitenarkiv
• Gradstein, Felix M & Agterberg, F.P. (2022). Application of Supersplining to the Mesozoic and Paleozoic Geologic Time Scales. Mathematical Geosciences. ISSN 1874-8961. 54(7), s. 1207–1226. doi: 10.1007/s11004-022-10007-z. Fulltekst i vitenarkiv Vis sammendrag

  Abstract Methods to determine the ages of period and stage boundaries of the geologic time scale (GTS) have a long history and continue to be steadily improved. Stage boundary age estimates are now accompanied by error bars showing stratigraphic uncertainty. Most GTS2004, GTS2012 and GTS2020 results involved cubic spline-curve fitting, and in this study, Ordovician through Cretaceous smoothing splines of GTS2020 are spliced together to construct a Paleozoic–Mesozoic superspline. This methodology, its advantages and its results are outlined.

• Gradstein, Felix M; Waskowska, Anna & Glinskikh, Larisa (2021). The first 40 million years of planktonic foraminifera. Geosciences. 11(2), s. 1–25. doi: 10.3390/geosciences11020085. Fulltekst i vitenarkiv Vis sammendrag

  We provide a biochronology of Jurassic planktonic foramininfera, using first order linkage to ammonite and nannofossil stratigraphy and geochronology. This enigmatic and understudied group of microfossils occurred from middle Toarcian through Tithonian time, from ~180 to ~143 Ma; its origin is unknown. There are three genera: Globuligerina, Conoglobigerina and Petaloglobigerina. The genus Globuligerina, with a smooth to pustulose test surface texture appeared in Toarcian (late Early Jurassic) and Conoglobigerina, with a rough reticulate test surface texture in Oxfordian (early Late Jurassic) time. The genus Petaloglobigerina, having a petaloid last whorl with one or more claviform and twisted chambers evolved in early Kimmeridgian time from Globuligerina balakhmatovae. Biochronologic events for Jurassic planktonic foraminifera are most like First Common Appearance or Last Common Appearance events. The very first or very last appearance levels of taxa are not easily sampled and detected. We recognize stratigraphic events from eleven species across four postulated evolutionary lineages, calibrated to Geologic Time Scale 2020. A faunal change, which is not well documented led to the survival of only one taxon, most likely Gobuligerina oxfordiana in the Tithonian.

• Yang, Zhang; Ogg, James G; Minguez, Daniel; Hounslow, Mark; Olaussen, Snorre & Gradstein, Felix M. [Vis alle 7 forfattere av denne artikkelen] (2021). Magnetostratigraphy of U-Pb–dated boreholes in Svalbard, Norway, implies that magnetochron M0r (a proposed Barremian-Aptian boundary marker) begins at 121.2 ± 0.4 Ma. Geology. ISSN 0091-7613. 49(6), s. 733–737. doi: 10.1130/G48591.1. Fulltekst i vitenarkiv
• Gradstein, Felix M & Waskowska, Anna (2021). New insights into the taxonomy and evolution of Jurassic planktonic foraminifera. Swiss Journal of Palaeontology. ISSN 1664-2376. 140(1). doi: 10.1186/s13358-020-00214-8. Fulltekst i vitenarkiv Vis sammendrag

  Abstract Globuligerina glinskikhae nov. sp. Gradstein & Waskowska and Globuligerina waskowskae nov. sp. Gradstein are new species of Jurassic planktonic foraminifera from the Middle Jurassic of Dagestan and Poland. G. glinskikhae nov. sp. with its remarkable ‘protoglobigerine’ test may be an early evolutionary offshoot of Globuligerina oxfordiana (Grigelis). It may be an index taxon for upper Bajocian through Bathonian strata in Eastern Europe and Southwest Asia, and might be recognizable also in thin sections. We consider G. waskowskae nov. sp. to be a possible forerunner of Conoglobigerina helvetojurassica (Haeusler), the first planktonic foraminiferal species with a reticulate wall texture. Currently, is only known from Poland. In some localities, specimens of G. oxfordiana and of G. glinskikhae nov. sp. posses an additional apertural opening, often lacking a rim; its function is enigmatic. The postulated lineage from Jurassic Globuligerina balakhmatovae (Morozova) to Cretaceous Clavihedbergella eocretacea Neagu is refined with the description of Petaloglobigerina simmonsi nov. gen., nov. sp. Gradstein from the Kimmeridgian of Portugal. The evolutionary transition from G. balakhmatovae to P. simmonsi occurs by means of the ontogenic development of a petaloid test, with a pronounced flattening of the whorl with ovate chambers, the last ones often offset and twisted. Jurassic planktonic foraminifera, now known to consist of three genera and 12+ species underwent long periods of stasis, interrupted by late Bajocian, mid-Oxfordian and early Kimmeridgian evolution. The three ‘stasis and root’ taxa G. oxfordiana , G. bathoniana and G. balakhmat ovae are geographically widespread in lower to mid palaeo-latitudes, and stratigraphically long ranging within the Middle and Late Jurassic. Modern digital microscopes, with co-axial and side LED lighting and excellent image stacking software are important tools in the study of Jurassic planktonic foraminifera, and fast and cost-effective communication tools in modern micropalaeontology.

• Kendall, Sophie; Gradstein, Felix M; Jones, Christopher; Lord, Oliver T. & Schmidt, Daniela N. (2020). Ontogenetic disparity in early planktic foraminifers. Journal of Micropalaeontology. ISSN 0262-821X. 39(1), s. 27–39. doi: 10.5194/jm-39-27-2020. Fulltekst i vitenarkiv
• Agterberg, Friedrich Peter; Gradstein, Felix M & Gale, Andrew (2020). Estimation of the ages of devonian and cretaceous stage boundaries in the geologictime scale. Boletin Geologico y Minero. ISSN 0366-0176. 131(2), s. 309–323. doi: 10.21701/BOLGEOMIN.131.2.006. Fulltekst i vitenarkiv
• Turner, Holly; Batenburg, Sietske; Gale, Andy S & Gradstein, Felix M (2019). The kimmeridge clay formation (Upper Jurassic-lower cretaceous) of the norwegian continental shelf and Dorset, UK: A chemostratigraphic correlation. Newsletters on stratigraphy. ISSN 0078-0421. 52(1), s. 1–32. doi: 10.1127/nos/2018/0436. Fulltekst i vitenarkiv
• Gradstein, Felix M; Waskowska, Anna; Kopaevich, Ludmila; Watkins, David K; Friis, Henrik & Panera, J Perez (2018). Berriasian planktonic foraminifera and calcareous nannofossils from Crimea Mountains, with reference to microfossil evolution. Swiss Journal of Palaeontology. ISSN 1664-2376. 138(2), s. 213–236. doi: 10.1007/s13358-018-0175-8. Fulltekst i vitenarkiv Vis sammendrag

  A Berriasian age planktonic foraminifera assemblage from a section near the village of Krasnoselivka in the Tonas River Basin, Crimea contains Favusella hoterivica (Subbotina), ?Favusella sp., Conoglobigerina gulekhensis (Gorbachik and Poroshina), Lilliputinella eocretacea (Neagu), Lilliputinella aff. similis (Longoria), Hedbergella aff. handousi Salaj and ? Globuligerina sp. Specimens are poorly preserved, but test morphology, aperture and key wall texture features are recognizable. Age assignment is based on a diverse and well-preserved calcareous nannofossils assemblage of upper zone CC2 and ammonites (Jacobi Zone). The nannfossils indicate an open marine environment of Tethyan affinity. Several of the planktonic foraminiferal taxa were not previously described from pre-Valanginian or Hauterivian strata. XRD analysis of the tests of benthic and planktonic foraminifera and micro-gastropods shows these to be calcitic in composition, also of those benthic and planktonic foraminifera that were deemed to be originally aragonitic in composition, indicating diagenetic changes in carbonate fractions. From detailed comparison to Jurassic planktonic foraminifera, two lineages are proposed from Late Jurassic into earliest Cretaceous: Globuligerina oxfordiana (Grigelis) to Favusella hoterivica (Subbotina) and Globuligerina balakhmatovae (Morozova) to Lilliputinella eocretacea (Neagu). The first lineage is a gradual change in wall sculpture from rugulose to reticulate and the second one a change to a lower spire, more ovate chambers of which the last one may be much larger in size and shift of the aperture out of the umbilicus. The meagre evolution of early planktonic foraminifera from Toarcian through Tithonian with only two genera and fewer than ten species does not follow the evolutionary diversity pattern of nannofossils and dinoflagellates. Tithonian appears to be a bottleneck for planktonic foraminifera, with a sparse record and virtual extinction. The so-called Globigerina oxfordiana from the Tithonian in ODP Site 901 on Galicia Bank (Collins et al. Proceeding Deep Sea Drilling Project Science Research 149:193–201, 1996) is of Miocene age.

• Fauth, Gerson; Filho, Marcos Antonio Batista dos Santos; Ceolin, Daiane & Gradstein, Felix M (2018). Cretaceous marine ostracod biostratigraphy of the South Atlantic Ocean: An overview. Revue de Micropaleontologie. ISSN 0035-1598. 61(3-4), s. 139–153. doi: 10.1016/j.revmic.2018.10.003. Fulltekst i vitenarkiv
• Gradstein, Felix M & Waters, Colin N. (2018). Summary of the new stratigraphic guide to the Chalk Group in the UK and Norwegian sectors of the North Sea. Proceedings of the Yorkshire Geological Society. ISSN 0044-0604. 62(3), s. 187–194. doi: 10.1144/pygs2018-011. Fulltekst i vitenarkiv
• Gradstein, Felix M (2017). New and emended species of Jurassic planktonic foraminifera. Swiss Journal of Palaeontology. ISSN 1664-2376. 136(2), s. 161–185. doi: 10.1007/s13358-017-0127-8. Fulltekst i vitenarkiv
• Gradstein, Felix M; Gale, Andrew; Kopaevich, Ludmila; Waskowska, Anna; Grigelis, Algimantas & Glinskikh, Larisa (2017). The planktonic foraminifera of the Jurassic. Part I: material and taxonomy. Swiss Journal of Palaeontology. ISSN 1664-2376. 136(2), s. 187–257. doi: 10.1007/s13358-017-0131-z. Fulltekst i vitenarkiv
• Zalasiewicz, Jan; Waters, Colin N.; Wolfe, Alexander P.; Barnosky, Anthony D.; Cearreta, Alejandro & Edgeworth, Matt [Vis alle 27 forfattere av denne artikkelen] (2017). Making the case for a formal Anthropocene Epoch: An analysis of ongoing critiques. Newsletters on stratigraphy. ISSN 0078-0421. 50(2), s. 205–226. doi: 10.1127/nos/2017/0385. Fulltekst i vitenarkiv Vis sammendrag

  A range of published arguments against formalizing the Anthropocene as a geological time unit have variously suggested that it is a misleading term of non-stratigraphic origin and usage, is based on insignificant temporal and material stratigraphic content unlike that used to define older geological time units, is focused on observation of human history or speculation about the future rather than geologically significant events, and is driven more by politics than science. In response, we contend that the Anthropocene is a functional term that has firm geological grounding in a well-characterized stratigraphic record. This record, although often lithologically thin, is laterally extensive, rich in detail and already reflects substantial elapsed (and in part irreversible) change to the Earth System that is comparable to or greater in magnitude than that of previous epoch-scale transitions. The Anthropocene differs from previously defined epochs in reflecting contemporary geological change, which in turn also leads to the term’s use over a wide range of social and political discourse. Nevertheless, that use remains entirely distinct from its demonstrable stratigraphic underpinning. Here we respond to the arguments opposing the geological validity and utility of the Anthropocene, and submit that a strong case may be made for the Anthropocene to be treated as a formal chronostratigraphic unit and added to the Geological Time Scale.

• Gradstein, Felix M; Gale, Andrew; Kopaevich, Ludmila; Waskowska, Anna; Grigelis, Algimantas & Glinskikh, Larisa [Vis alle 7 forfattere av denne artikkelen] (2017). The planktonic foraminifera of the Jurassic. Part II: Stratigraphy, palaeoecology and palaeobiogeography. Swiss Journal of Palaeontology. ISSN 1664-2376. 136(2), s. 259–271. doi: 10.1007/s13358-017-0132-y. Fulltekst i vitenarkiv
• Gradstein, Felix M; Kopaevich, Ludmila & Knappertsbusch, Michael (2017). Preface: The planktonic foraminifera of the Jurassic. Swiss Journal of Palaeontology. ISSN 1664-2376. 136(2), s. 153–159. doi: 10.1007/s13358-017-0133-x. Fulltekst i vitenarkiv
• Gradstein, Felix M (2017). The planktonic foraminifera of the Jurassic. Part III: annotated historical review and references. Swiss Journal of Palaeontology. ISSN 1664-2376. 136(2), s. 273–285. doi: 10.1007/s13358-017-0130-0. Fulltekst i vitenarkiv
• Turner, Holly E; Gradstein, Felix M; Gale, Andy S & Watkins, David K (2017). The age of the Tojeira Formation (Late Jurassic, Early Kimmeridgian), of Montejunto, west-central Portugal. Swiss Journal of Palaeontology. ISSN 1664-2376. 136(2), s. 287–299. doi: 10.1007/s13358-017-0137-6. Fulltekst i vitenarkiv
• Gradstein, Felix M; Waters, Colin N.; Charnock, Mike; Munsterman, Dirk; Hollerbach, Michelle & Brunstad, Harald [Vis alle 8 forfattere av denne artikkelen] (2016). Stratigraphic guide to the cromer knoll, shetland and chalk groups, north sea and norwegian sea. Newsletters on stratigraphy. ISSN 0078-0421. 49(1), s. 73–280. doi: 10.1127/nos/2016/0071. Fulltekst i vitenarkiv
• Agterberg, F.P; Gradstein, Felix M; Cheng, Q & Liu, G (2013). The RASC and CASC programs for ranking, scaling and correlation of biostratigraphic events. Computers & Geosciences. ISSN 0098-3004. 54, s. 279–292. doi: 10.1016/j.cageo.2013.01.002. Fulltekst i vitenarkiv
• Gradstein, Felix M; Davydov, Vladimir I. & Hammer, Øyvind (2013). Carboniferous cyclic sedimentation and micropaleontology of Bear Island, Arctic Norway. Newsletters on stratigraphy. ISSN 0078-0421. 46(3), s. 303–317. doi: 10.1127/0078-0421/2013/0036. Fulltekst i vitenarkiv
• Brunstad, Harald; Gradstein, Felix M; Lie, Jan Erik; Hammer, Øyvind; Munsterman, Dirk & Ogg, Gabi [Vis alle 7 forfattere av denne artikkelen] (2013). Stratigraphic Guide to the Rogaland Group, Norwegian North Sea. Newsletters on stratigraphy. ISSN 0078-0421. 46(2), s. 139–286. doi: 10.1127/0078-0421/2013/0032. Fulltekst i vitenarkiv
• Gradstein, Felix M; Ogg, James G & Hilgen, Frits J (2012). On The Geologic Time Scale. Newsletters on stratigraphy. ISSN 0078-0421. 45(2), s. 171–188. doi: 10.1127/0078-0421/2012/0020. Fulltekst i vitenarkiv
• Agterberg, F.P; Hammer, Øyvind & Gradstein, Felix M (2012). Statistical procedures, The Geologic Time Scale 2012. Elsevier. ISSN 9780444593900. s. 269–274. Fulltekst i vitenarkiv
• Becker, Ralph Thomas; Gradstein, Felix M & Hammer, Øyvind (2012). The Devonian period, The Geologic Time Scale 2012. Elsevier. ISSN 9780444593900. s. 559–580. Fulltekst i vitenarkiv
• Gradstein, Felix M; Anthonissen, Erik Darren; Brunstad, Harald; Charnock, Mike; Hammer, Øyvind & Hellem, Terje [Vis alle 7 forfattere av denne artikkelen] (2010). Norwegian Offshore Stratigraphic Lexicon (NORLEX). Newsletters on stratigraphy. ISSN 0078-0421. 44(1), s. 73–86. doi: 10.1127/0078-0421/2010/0005. Fulltekst i vitenarkiv
• Gradstein, Felix M & Ogg, J.G. (2009). The Geologic Time Scale. I Hedges, S. Blair & Kumar, Sudhir (Red.), The Timetree of Life. Oxford University Press. ISSN 9780199535033. Fulltekst i vitenarkiv
• Gradstein, Felix M; Ogg, JG & Kranendonk, M van (2008). On the geologic time scale 2008. Newsletters on stratigraphy. ISSN 0078-0421. 43, s. 5–13. doi: 10.1127/0078-0421/2008/0043-0005. Fulltekst i vitenarkiv
• Gradstein, Felix M & Finney, SC (2007). On the Ordovician Period and Quaternary Subera. GeoArabia. ISSN 1025-6059. 12(1), s. 205–210. Fulltekst i vitenarkiv
• Ogg, J.G. & Gradstein, Felix M (2006). TS-Creator (c) - Chronostratigraphic data base and visualisation: Cenozoic-Mesozoic-Paleozoic integrated stratigraphy and user-generated time scale graphics and charts. Episodes. ISSN 0705-3797. 29(1), s. 65–66. Fulltekst i vitenarkiv
• Gradstein, Felix M (2005). Quantitative Methods for Applied Microfossil Biostratigraphy. I Koutsoukos, Eduardo A.M. (Red.), Applied Stratigraphy. Springer Science+Business Media B.V.. ISSN 9781402026324. s. 359–386. Fulltekst i vitenarkiv Vis sammendrag

  Few, if any, fundamental disciplines in the earth sciences have seen so many dramatic changes and developments as stratigraphy. The discipline has come to be applied progressively, and indispensably, to nearly all branches of the earth sciences, including such endeavors as charting the course and complexities of life evolution through time, understanding how ancient ecosystems developed and operated, and furnishing data pivotal to exploration and exploitation of strategic mineral resources. This book aims to incorporate major aspects and essential elements underpinning the modern applications and perspectives of stratigraphy. It focuses on traditional and innovative techniques and how these can be utilized in reconstructing the geological history of sedimentary basins and in solving manifold geological problems and phenomena. Each chapter summarizes contributions by leading researchers in the field. It is hoped that this book will provide the reader with key insights into all these aspects and applications.

• Gradstein, Felix M; Ogg, J.G.; Smith, AG; Bleeker, W & Lourens, LJ (2004). A nex Geologic Time Scale, with special refernce to Precambrian and Neogene. Episodes. ISSN 0705-3797. 27(2), s. 83–100. Fulltekst i vitenarkiv
• Walsh, SL; Gradstein, Felix M & Ogg, JG (2004). History, philosophy, and application of the Global Stratotype Section and Point (GSSP). Lethaia: An International Journal of Palaeontology and Stratigraphy. ISSN 0024-1164. 37, s. 201–218. Fulltekst i vitenarkiv
• Gradstein, Felix M & Ogg, J.G. (2004). Geologic Time Scale 2004 � why, how and where next! Lethaia: An International Journal of Palaeontology and Stratigraphy. ISSN 0024-1164. s. 175–181. Fulltekst i vitenarkiv
• Gradstein, Felix M; Finney, SC; Lane, R & Ogg, JG (2004). ICS on stage. Lethaia: An International Journal of Palaeontology and Stratigraphy. ISSN 0024-1164. 36, s. 371–377. Fulltekst i vitenarkiv

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• Gradstein, Felix M; Zalasiewicz, Jan; Williams, Mark & Waśkowska, Anna (2025). Fossils and Earth Time. Elsevier. ISBN 9780443290930. doi: 10.1016/C2023-0-01296-1. Fulltekst i vitenarkiv
• Gradstein, Felix M (2012). The Geologic Time Scale 2012. Elsevier. ISBN 9780444593900. 1144 s. Fulltekst i vitenarkiv
• Wandås, Bjørn T.G.; Nystuen, Johan Petter; Eide, Elizabeth & Gradstein, Felix M (2005). Onshore-offshore relationships on the North Atlantic margin.Proceedings of the Norwegian Petroleum Society Conference, October 2002, Trondheim, Norway. Elsevier. ISBN 9780444518491. 305 s. Fulltekst i vitenarkiv
• Kaminski, M.A & Gradstein, Felix M (2005). Atlas of Paleogene Cosmopolitan Deep-Water Agglutinated Foraminifera. GRZYBOWSKI FOUNDATION PUBLICATIONS. ISBN 9788391238585. 500 s. Fulltekst i vitenarkiv

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• Zalasiewicz, Jan; Thomas, Julia Adeney; Waters, Colin N.; Turner, Simon; Head, Martin J & Antweiler, Christoph [Vis alle 56 forfattere av denne artikkelen] (2024). The meaning of the Anthropocene: why it matters even without a formal geological definition. Nature. ISSN 0028-0836. 632, s. 980–984. doi: 10.1038/d41586-024-02712-y. Fulltekst i vitenarkiv Vis sammendrag

  Even though geologists have rejected the designation of an Anthropocene epoch, the idea of a major planetary transition in the mid-twentieth century remains useful across physical and social sciences, the humanities and policy.

• Nakrem, Hans Arne; Gradstein, Felix M & Roaldset, Elen (2010). Value increase of old museum collections: The Novaya Zemlya collection at the Natural History Museum (Oslo) as an example. NGF Abstracts and Proceedings of the Geological Society of Norway. s. 132–133. Fulltekst i vitenarkiv
• Gradstein, Felix M (2008). Foreword. Newsletters on stratigraphy. ISSN 0078-0421. 43, s. 3–4. doi: 10.1127/0078-0421/2008/0043-0003. Fulltekst i vitenarkiv
• Nakrem, Hans Arne & Gradstein, Felix M (2007). Novaya Zemlya – the Holtedahl 1921 expedition and the valuable collection of rocks from an inaccessible part of the Russian Arctic. Fulltekst i vitenarkiv
• Nakrem, Hans Arne & Gradstein, Felix M (2007). Novaya Zemlya – the Holtedahl 1921 expedition and the valuable collection of rocks from an inaccessible part of the Russian Arctic. Abstracts and Proceedings of the Geological Society of Norway. s. 67–68. Fulltekst i vitenarkiv
• Gradstein, Felix M (2006). Advances in Stratigraphy and the Geologic Time Scale. Fulltekst i vitenarkiv
• Gradstein, Felix M (2006). Geologic Time Scale 2004, Why, How and Where Next. Fulltekst i vitenarkiv
• Gradstein, Felix M (2006). Advances in Stratigraphy and the Jurassic Geologic Time Scale. Fulltekst i vitenarkiv
• Gradstein, Felix M (2006). Geologic Time Scale 2004, Why, How and Where Next. Fulltekst i vitenarkiv
• Gradstein, Felix M (2006). Uncertainty in Geologic Time Scale Calibrations. Fulltekst i vitenarkiv
• Gradstein, Felix M & Ogg, JG (2006). TS-Creator (c) - Chronostratigraphic data base and visualisation: Cenozoic-Mesozoic-Paleozoic integrated stratigraphy and user-generated time scale graphics and charts. GeoArabia. ISSN 1025-6059. 11. Fulltekst i vitenarkiv
• Gradstein, Felix M (2005). Book Review - The New Zealand Geologic Time Scale. Episodes. ISSN 0705-3797. 20(1). Fulltekst i vitenarkiv
• Melchin, MJ; Rong, JY; Gradstein, Felix M; Koren', TN & Finney, SC (2004). Stability in stratigraphy. Lethaia: An International Journal of Palaeontology and Stratigraphy. ISSN 0024-1164. 37, s. 124–125. Fulltekst i vitenarkiv
• Gradstein, Felix M (2004). Recent Advances with the Geological Time Scale and Future Trends. Fulltekst i vitenarkiv
• Gradstein, Felix M (2004). Geologic Time Scale 2004. Fulltekst i vitenarkiv

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