The Campanian-Maastrichtian stage boundary in the Aktulagai section (North Caspian depression)
Tóm tắt
Distribution of belemnites and benthic foraminifers in the Campanian-Maastrichtian boundary layers of the Aktulagai section, one of Upper Cretaceous reference sections in the east of the European paleobiogeographic region (EPR) is discussed. The base of Lanceolata Beds defined by A.D. Arkhangelsky in 1912 is well-substantiated biostratigraphic level corresponding to boundary between the Campanian and Maastrichtian stages. In spacious outcrops of Upper Cretaceous deposits in the Aktulagai Plateau (Aktyubinsk region, Kazakhstan Republic), “primitive Belemnella forms” (two rostra plates) appearing above that base distinctly replace the genus Belemnitella dominant in the Campanian. Seven successive zonal assemblages of benthic foraminifers (one plate) are established in the boundary interval. The Aktulagai reference section of Upper Cretaceous sediments can be used to trace the Campanian-Maastrichtian boundary from the eastern EPR to Boreal regions of Russia based on abundant micro-and nannofossils.
Tài liệu tham khảo
V. S. Akimets, V. N. Beniamovski, V. I. Gladkova, et al., “Campanian-Maastrichtian Benthic Foraminifers and Belemnites of the Northeastern Caspian Region,” Byull. Mosk. O-va. Ispyt. Prir., Otd. Geol. 58(1), 113–126.
G. N. Aleksandrova and A. G. Olfer’ev, “Dinocysts of the Upper Cretaceous Mozzheveloovrazhnaya Formation in the Reference Section near the Mezino-Lapshinovka Village of the Saratov Region,” in Proceedings of the Conference Paleostrat-2005 (MGU, Moscow, 2005), pp. 7–8 (in Russian).
E. O. Amon, “Upper Cretaceous Radiolarians of the Urals,” in Materials on Stratigraphy and Paleontology of the Urals (Inst. Geol. Geokhim. UrO RAN, Yekaterinburg, 2000) [in Russian].
A. D. Arkhangelsky, Upper Cretaceous Sediments of the East European Russia. Materials on Geology of Russia. Vol. 25 (Imperator. Akad. Nauk, St. Petersburg, 1912) [in Russian].
V. N. Beniamovski, M. A. Akhmet’ev, A. S. Alekseev, et al., “The Uppermost Marine Cretaceous and Paleogene of Southwestern Siberia,” Byull. Mosk. O-va. Ispyt. Prir., Otd. Geol. 77(5), 28–50.
V. N. Beniamovski and L. F. Kopaevich, “Detailed Zonal Scheme of the Campanian-Maastrichtian for the European Paleobiogeographic Region,” Stratigr. Geol. Korrelyatsiya 9(6), 65–79 (2001) [Stratigr. Geol. Correlation 9, 570–590 (2001).
V. N. Beniamovski, V. S. Vishnevskaya, L. I. Kazintsova, et al., “Foraminiferal-Radiolarian Cyclicity in the Upper Cretaceous of the Volga Region: Stratigraphic and Plaeobiogeographic Aspects,” in Proceedings of the Third Young Scientists’ Readings in Commemoration of A.L. Yanshin: Current Problems of Geology. (Nauchnyi Mir, Moscow, 2003), pp. 294–298 [in Russian].
O. B. Dmitrenko, “Upper Cretaceous Stratigraphy of the Aktulagai Section (East Caspian Region) Based on Calcareous Nannofossils,” Byull. Mosk. O-va. Ispyt. Prir., Otd. Geol. 60(6), 100–105 (1985).
A. V. Fursenko, “Distribution of Microfossils in the Section of the Emba Oil-Bearing Region,” in The Great Emba (AN SSSR, Moscow, 1937), pp. 165–180 [in Russian].
R. F. Gekker, “Fossil Facies of the Smooth Hard Sea Bottom,” Tr. Inst. Geol. AN EstSSR 5, 199–223 (1960).
J. A. Jeletzky, “On Taxonomy and Phylogeny of Upper Cretaceous Belemnites,” Dokl. Akad. Nauk UkrSSR, No. 2, 28–30 (1941).
J. A. Jeletzky, “Über den taxonomischen wert einiger morphologischer Elements des Rostrums der belemnitellenartigen Formen (Familie Belemnetellidae Pavlow, 1913), sowie über die Gattung Belemnella (Nowak, 1913, subg.) Jeletzky, 1941, ihre Phylogenie und einige Vertreter,” Neues Jahrb. Miner. Monatshefte, Abt. B., No. 9, 257–287 (1949).
J. A. Jeletzky, “Die Stratigraphie und Belemnitenfauna des Obercampan und Maastricht Westfalens, Nordwestdeutschlands und Danemarks sowie einige algemaine Gliedrungs-Probleme der jüngeren borealen Oberkreide Euroasien,” Beihefte Geol. Jahrb., No. 1, 1–142 (1951).
J. A. Jeletzky, “Die jüngere Oberkreide (Oberconiac bis Maastricht) Südwestrusslands und ihr Vergleich mit der Nordwest-und Westeuropas,” Beihefte Geol. Jahrb., No. 33, 1–157 (1958).
V. I. Il’ina, I. A. Kul’kova, and N. K. Lebedeva, Microphytofossils and Detailed Stratigraphy of Marine Mesozoic and Cenozoic of Siberia (OIGGM SO, RAN, Novosibirsk, 1994) [in Russian].
A. F. Khlonova and N. K. Lebedeva, “Circum-Boreal Correlation of Upper Cretaceous Sections Based on Palynological Data,” Geol. Geofiz., No. 2, 13–19 (1988).
W. Koch, “Biostratigraphie in der Oberkreide und Taxonomie von Foraminiferen,” Geol. Jahrb, No. A38, 11–123 (1977).
S. N. Koltypin, “Upper Cretaceous Sediments of the Ural-Emba Salt Dome, the Southwestern Cis-Urals and Mugodzhary Region,” Tr. VNIGRI 109, 1–213 (1957).
L. F. Kopaevich, V. N. Beniamovski, and D. P. Naidin, “The Lower-Upper Maastrichtian Boundary in the European Paleobiogeographic Region,” Byull. Mosk. O-va. Ispyt. Prir., Otd. Geol. 62(5), 43–57 (1987).
V. G. Morozova, “To Upper Cretaceous and Paleogene Stratigraphy of the Emba Region, Implications of Foraminifers,” Byull. Mosk. O-va. Ispyt. Prir., Otd. Geol. 17(4–5), 59–86 (1939).
V. V. Mozgovoi, “Family Belemnitellidae,” in Atlas of Mesozoic Fauna and Spore-Pollen Assemblages of the Volga and Adjacent Regions (SGU, Saratov, 1969) 2, pp. 138–159 [in Russian].
D. P. Naidin, Üpper Cretaceous Belemnites of the Russian Platform and Adjacent Regions, Genera Actinocamax, Goniocamax, and Belemnellocamax (MGU, Moscow, 1964) [in Russian].
D. P. Naidin, “Subclass Endocochlia, Endocochleate Cehalopods,” in Atlas of Upper Cretaceous Fauna of the Donets Basin (Nedra, Moscow, 1974), pp. 197–240 [in Russian].
D. P. Naidin, “Stage Boundaries of the Cretaceous System: International Symposium (Brussels),” Byull. Mosk. O-va. Ispyt. Prir., Otd. Geol. 71(4), 41–56 (1996).
D. P. Naidin, “Global and Regional Standards in Stratigraphy,” Geol. Razved. 39, 1021–1031 (1998).
D. P. Naidin, “One More Time on the Boundary between the Campanian and Maastrichtian Stages. Article 1. First Appearance of Species and Biostratigraphic Boundaries,” Byull. Mosk. O-va. Ispyt. Prir., Otd. Geol. 77(2), 43–50 (2002a).
D. P. Naidin, “One More Time on the Boundary between the Campanian and Maastrichtian Stages. Article 2. Stratigraphic Potential of Pachydiscus neubergicus (Hauer),” Byull. Mosk. O-va. Ispyt. Prir., Otd. Geol. 77(4), 33–45 (2002b).
D. P. Naidin, “Limestone-Marl Pairs in the Cenomanian Rhythmical Carbonate Sequence of the Crimea as an Indicator of Different Paleogeographic Regimes of Precession Semicycles,” Izv. Vyssh. Uchebn. Zaved., Ser. Geol. Razved., No. 1, 12–17 (2004).
D. P. Naidin, V. N. Beniamovski, and L. F. Kopaevich, “Upper Cretaceous Biostratigraphic Scheme of the European Paleobiogeographic Region,” Vestn. Mosk. Gos. Univ., Ser. 4. Geol., No. 5, 3–14 (1984).
D. P. Naidin and L. F. Kopaevich, “On Zonal Subdivisions of the Upper Cretaceous of the European Paleobiogeographic Region,” Byull. Mosk. O-va. Ispyt. Prir., Otd. Geol. 52(5), 92–112 (1977).
I. I. Nikitin, Upper Cretaceous Belemnites from the Northeastern Flank of the Dnieper-Donets Depression (AN UkrSSR, Kiev, 1958) [in Ukrainian].
A. G. Olfer’ev and A.S. Alekseev, “Biostratigraphic Zonation of the Upper Cretaceous in the East European Platform,” Stratigr. Geol. Korrelyatsiya 11(2), 75–101 (2003) [Stratigr. Geol. Correlation 11, 172–198 (2003).
M.-G. Schulz, “Morphometrisch-variationsstaatische Untersuchungen zur Phylogenie der Belemniten-Gattung Belemnella im Untermaastricht NW-Europas,” Geol. Jahrb., Reiche A 47, 3–157 (1979).
N. G. Sharafutdinova, “Dinocysts across the Maastrichtian-Danian Boundary in the Koshak Section (Mangyshlak),” Byull. Mosk. O-va. Ispyt. Prir., Otd. Geol. 67(2), 92–98 (1992).
Stratigraphy of the USSR. Cretaceous System. Half-Volume 1 (Nedra, Moscow, 1986) [in Russian].
N. I. Strel’nikova, Late Cretaceous Diatoms (Nauka, Moscow, 1974) [in Russian].
V. P. Vasilenko and E. V. Myatlyuk, “Foraminifers and Stratigraphy of the Upper Cretaceous in the SOuth Emba Area,” in Microfauna of Oil-Bearing Deposits in the Caucasus, Emba Region, and Central Asia (Gostoptekhizdat, Leningrad, 1947), pp. 161–221 [in Russian].
V. S. Vishnevskaya, “Radiolarian Potential of European Russia,” in Proceedings of the Jubilee Scientific Conference: Study of the Lithosphere (ILSAN RAN, Moscow, 1999), pp. 12–14 [in Russian].
V. S. Vishnevskaya, Jurassic and Cretaceous Radiolarian Biostratigraphy of Russia (GEOS, Moscow, 2001) [in Russian].
V. A. Zakharov, N. K. Lebedeva, and O. V. Khomentovsky, “Upper Cretaceous Inoceramid and Dinoflagellate Cyst Biostratigraphy of Northern Siberia,” in Tethyan/Boreal Cretaceous Correlation, Ed. by J. Michalik (Veda, Bratislava, 2002), pp. 137–172.
V. A. Zakharov, Yu. N. Zanin, K. V. Zverev, et al., Upper Cretaceous Stratigraphy of Northern Siberia, Ust-Yenisei Depression (IGG SO AN SSSR, Novosibirsk, 1986) [in Russian].