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Ammonites and magnetostratigraphy of the Berriasian–Valanginian boundary deposits from eastern Crimea

Abstract

Euthymi, Crassicostatum and Callisto ammonite subzones, correlable with Paramimounum, Picteti, and Alpillensis subzones and probably with the Late Berriasian Otopeta Subzone of the Boissieri Standard Zone have been recognized in calcareous clays of the Berriasian-Valanginian boundary sequence in the Feodosiya district (eastern Crimea). The ammonite Leptoceras studeri (Ooster) suggests Late Berriasian to Early Valanginian age. Geomagnetic polarity indicates M16-M14r magnetozones. Therefore, the base of the Valanginian sequence in eastern Crimea should be placed within the M14r magnetozone.

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Timing of the Middle Miocene Badenian Stage of the Central Paratethys

.J., McLaughlin P.P., Kominz M.A., Olsson R.K., Wright J.D., Cramer B.S., Pekar S.F. & Van Sickel W. 2005b: 174AX Leg summary: Sequences, sea level, tectonics, and aquifer resources: Coastal plain drilling. Proceedings of the Ocean Drilling Program, Initial Reports, Volume 174AX (Suppl.), 1-38. Ogg J.G. 2012: Geomagnetic polarity time scale. In: Gradstein F.M., Ogg J.G., Schmitz M.D. & Ogg G.M. (Eds.): The Geologic Time Scale 2012. Elsevier, Amsterdam, 85-113. Oszczypko N. & Oszczypko-Clowes M. 2012: Stages of development in the Polish Carpathian

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Crustal geomagnetic field and secular variation by regional and global models for Austria

field to degree and order 720. Geochemistry, Geophysics, Geosystems, 11, Q06015. https://doi.org/10.1029/2010GC003026. Maus, S. and Haak, V., 2002. Is the Long Wavelength Crustal Magnetic Field Dominated by Induced or by Remanent Magnetization? Journal of Indian Geophysical Union, 6/1, 1-5. Mayhew, M.A., 1979. Inversion of satellite magnetic anomaly data. Journal of Geophysics, 45, 119-128. Merrill, R. and Mcfadden, P.H., 1999. Geomagnetic polarity transitions. Reviews of Geophysics, 37, 201-226. https://doi.org/10

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High resolution stratigraphy of the Jurassic-Cretaceous boundary interval in the Gresten Klippenbelt (Austria)

. Palaeogeogr. Palaeoclimatol. Palaeoecol. 199, 187-228. Bralower T. J., Monechi S. & Thierstein H. R. 1989: Calcareous nannofossil zonation of the Jurassic-Cretaceous boundary interval and correlation with the geomagnetic polarity timescale. Mar. Micropaleont. 14, 153-235. Cžjžek J. 1852: Aptychenschiefer in Niederösterreich. Jb. K.-Kön. Geol. Reichsanst. 3, 3, 1-7. Decker K. 1990: Plate tectonics and pelagic facies: Late Jurassic to Early Cretaceous deep-sea sediments of the Ybbsitz ophiolite

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A New Original Conception in Rock Magnetism, Paleomagnetism and Geomagnetism: An Origin of the Reversed Magnetization of Rocks on Earth

and mineralogical study of self-reversed dacite pumices from the 1991 Pinatubo eruption (Philippines). Geophys. J. Int., 138, 159-178. Broz J., 1962: Modern problems of ferromagnetism. Publisher of Czechoslovak Academy of Sciences. In Czech, pp. 186. Candl S. C., Kent D. V., 1995: Revised calibration of the geomagnetic polarity timescale for the Late Cretaceous and Cenozoic. J. Geophys. Res., 100, 6093-6095. Carmichael C. M., 1961: The magnetic properties of ilmenite-hematite crystals. Proc. Roy. Soc., A263, 508

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Remagnetization of Upper Jurassic limestones from the Danubian Unit (Southern Carpathians, Romania): tectonic implications

References Besse J. & Courtillot V. 2002: Apparent and true polar wander and the geometry of the geomagnetic field over the last 200 Myr. J. Geophys. Res. 107(B11), 2300. doi:10.1029/2000JB000050 Cande S.C. & Kent D.V. 1995: Revised calibration of the geomagnetic polarity time scale for the Late Cretaceous and Cenozoic. J. Geophys. Res. 100, 6093-6095. Chadima M. & Hrouda F. 2006: Remasoft 3.0 - a user-friendly paleomagnetic data browser and analyzer. Travaux Géophysiques XXVII, 20

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Stratigraphy, plankton communities, and magnetic proxies at the Jurassic/Cretaceous boundary in the Pieniny Klippen Belt (Western Carpathians, Slovakia)

and correlations with the Geomagnetic Polarity Timescale. Mar. Micropaleont. 14, 153–235. Bralower T.J. Monechi S. Thierstein H. R. 1989 Calcareous nannofossils zonation of the Jurassic–Cretaceous boundary interval and correlations with the Geomagnetic Polarity Timescale Mar. Micropaleont. 14 153 235 Casellato C.E. 2010: Calcareous nannofossil biostratigraphy of Upper Callovian–Lower Berriasian successions from the Southern Alps, N Italy. Riv. Ital. Paleont. Strat. 116, 3., 357–404. Casellato C.E. 2010 Calcareous

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Biostratigraphy, sedimentology and paleoenvironments of the northern Danube Basin: Ratkovce 1 well case study

tropical planktonic foraminiferal biostratigraphy and calibration to the geomagnetic polarity and astronomical time scale. Earth Sci. Rev. 104, 111-142.

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The calcareous nannofossils and magnetostratigraphic results from the Upper Tithonian–Berriasian of Feodosiya region (Eastern Crimea)

. Berichte der Geol. Bundesanst. 120, 23. Baraboshkin E.Yu., Arkadiev V.V., Guzhikov A.Yu. & Baraboshkin E.E. 2019: Tirnovella occitanica Zone of the Berriassian in Feodosiya region (Eastern Crimea). Moscow University Geology Bull. 1, 25–35 (in Russian). Bralower T.J., Monechi S. & Thierstein H.R. 1989: Calcareous Nannofossil Zonation of the Jurassic–Cretaceous Boundary Interval and Correlation with the Geomagnetic Polarity Timescale. Mar. Micropaleont. 14, 153–235. Casellato C.E. 2010: Calcareous Nannofossil Biostratigraphy of Upper Callovian

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Calcareous nannofossil and ammonite integrated biostratigraphy across the Jurassic – Cretaceous boundary strata of the Kopanitsa composite section (West Srednogorie Unit, southwest Bulgaria)

. Kluwer Academic Publishers , Cambridge, 16–28. Bralower T., Monechi S. & Thierstein H.R. 1989: Calcareous nannofossil zonation of the Jurassic–Cretaceous boundary interval and correlation with the geomagnetic polarity timescale. Mar. Micropaleontol. 14, 1–3, 153–235. Bucur I., Beleš D., Sasaran E. & Balica C. 2010: New data on facies development and micropaleontology of the eastern margin of the Getic Carbonate Platform (South Carpathians, Romania): case study of the Mateiaş Limestone. Studia Universitatis Babeş-Bolyai, Geologia 55, 33–41. Bulot L

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