Abstract
On the basis of the analysis of literature and cartographic materials, our field observations, results of U–Pb isotope dating of zircons, and examination of paleobotanical collections, it was established that the “Mesophytic” Buor-Kemus fern–gymnosperm flora existed in Eastern Chukotka in the Late Cretaceous longer than in other regions. The volcanics of the Nyrvakinot sequence are partly facially replaced by the sedimentary deposits of the Olkhovaya Formation. Both units contain plant remains of the Buor-Kemus flora. The Amgen volcanogenic sequence lies conformably and without any hiatus on the Nyrvakinot sequence and contains “Cenophytic” plant assemblages with a significant amount of angiosperms, ascribed to the Turonian–Coniacian. These three units were previously considered as the three major constituents of the Etelkuyum Formation. The U–Pb isotope ages of zircons from volcanogenic and tuffaceous sedimentary rocks of the Nyrvakinot sequence show that they accumulated in the Late Сretaceous in the age range of 93–87 Ma (Turonian–Coniacian). Taking into account all data available, it is evident that the Buor-Kemus flora (at least within the Eastern Chukotka segment of the Okhotsk–Chukotka Volcanogenic Belt) existed in the Albian, Cenomanian, Turonian, and, probably, in the early Coniacian.
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REFERENCES
Akinin, V.V. and Miller, E.L., Evolution of calc-alkaline magmas of the Okhotsk–Chukotka volcanogenic belt, Petrology, 2011, vol. 19, no. 3, pp. 237–277.
Belyi, V.F., Stratigrafiya i struktury Okhotsko-Chukotskogo vulkanogennogo poyasa (Stratigraphy and Structures of the Okhotsk–Chukotka Volcanogenic Belt), Moscow: Nauka, 1977 [in Russian].
Belyi, V.F., Efimova, A.F., and Paraketsov, K.V., Lower Cretaceous in the northeastern part of the Okhotsk–Chukotka Volcanogenic Belt, Sov. Geol., 1965, no. 10, pp. 97–109.
Bogomolov, G.I., Gosudarstvennaya geologicheskaya karta SSSR masshtaba 1 : 200 000. Seriya Chukotskaya. List Q-1-XV, XVI. Ob’’yasnitel’naya zapiska (The 1 : 200 000 State Geological Map of the USSR. Ser. Chukotka. Sheets Q-1-XV, XVI. Explanatory Note), Moscow: Soyuzgeolfond, 1983 [in Russian].
Dunkl, I., Mikes, T., and Simon, K.E.A., Brief introduction to the Windows program Pepita: data visualization, and reduction, outlier rejection, calculation of trace element ratios and concentration from LA–ICP–MS data, in Laser Ablation ICP–MS in the Earth Sciences: Current Practices and Outstanding Issues, Sylvester, P., Ed., Mineral. Assoc. Canada Short Course, 2008, vol. 40, pp. 334–340.
Filippova, G.G., Stratigraphy and age of continental deposits of the Amguema River basin and the northern coast of the Bay of Crest, Kolyma, 1997, no. 2, pp. 12–23.
Filippova, G.G., Stratigraphy and age of continental deposits in Central and Eastern Chukotka, Tikhookean. Geol., 2001, vol. 20, no. 1, pp. 85–99.
Golovneva, L.B., Provincial division of the Asian part of the Siberian–Canadian paleofloristic region in the Late Cretaceous, Stratigr. Geol. Correl., 2014, vol. 22, no. 3, pp. 287–297.
Petrenko, E.E., Gosudarstvennaya geologicheskaya karta SSSR masshtaba 1 : 200 000. Seriya Chukotskaya. List Q-1-XI, XII. Ob’’yasnitel’naya zapiska (The 1 : 200 000 State Geological Map of the USSR. Ser. Chukotka. Sheets Q-1-XI, XII. Explanatory Note), Moscow: Soyuzgeolfond, 1982 [in Russian].
Herman, A.B., Stages and cycles in the Late Cretaceous floral changes of the Anadyr–Koryak subregion (Northeast Russia) and their connection with climatic changes, Stratigr. Geol. Correl., 1993, vol. 1, no. 1, pp. 77–87.
Herman, A.B., Late Early–Late Cretaceous floras of the North Pacific Region: florogenesis and early angiosperm invasion, Rev. Palaeobot. Palynol., 2002, vol. 122, nos. 1–2, pp. 1–11.
Herman, A.B., Albian–Paleocene flora of Northern Pacific, in Tr. GIN RAN. Vyp. 592 (Trans. Geol. Inst RAS. Vol. 592), Moscow: GEOS, 2011.
Herman, A.B., Albian–Paleocene Flora of the North Pacific: systematic composition, palaeofloristics and phytostratigraphy, Stratigr. Geol. Correl., 2013, vol. 21, no. 7, pp. 689–747.
Herman, A.B., Golovneva, L.B., Shczepetov, S.V., and Grabovsky, A.A., The Late Cretaceous Arman Flora of Magadan Oblast, Northeastern Russia, Stratigr. Geol. Correl., 2016, vol. 24, no. 7, pp. 651–760. https://doi.org/10.1134/S0869593816070029
Hourigan, J.K. and Akinin, V.V., Tectonic and chronostratigraphic implications of new 40Ar/39Ar geochronology and geochemistry of the Arman and Maltan-Ola volcanic fields, Okhotsk–Chukotka volcanic belt, northeastern Russia, GSA Bull., 2004, vol. 116, nos. 5/6, pp. 637–654.
Katsube, A., Hayasaka, Y., Sakaguchi, A., and Takahashi, Y., U–Pb zircon dating using Nd-YAG (213 nm) Laser ablation-ICP-MS, and evaluating the consistency with SHRIMP dating, J. Geol. Soc. Japan, 2012, vol. 118, no. 11, pp. 762–767.
Kelley, S.P., Spicer, R.A., and Herman, A.B., New 40Ar/39Ar dates for Cretaceous Chauna Group tephra, North-Eastern Russia, and their implications for the geologic history and floral evolution of the North Pacific Region, Cretaceous Res., 1999, vol. 20, no. 1, pp. 97–106.
Lebedev, E.L., Stratigraphy and age of the Okhotsk–Chukotka volcanogenic belt, in Tr. Geol. inst. AN SSSR. Vyp. 421 (Trans. Geol. Inst. USSR Acad. Sci. Vol. 421), Moscow: Nauka, 1987.
Ludwig, K.R., User’s Manual for Isoplot/Ex, Version 3.00. A geochronological toolkit for Microsoft Excel, Berkeley:Geochronol. Center Spec. Publ., 2003, vol. 4. pp. 25–32.
Moiseeva, M.G. and Sokolova, A.B., New data on the composition and age of the Ust’-Emuneret flora of the Enmyvaam River basin (Central Chukotka), Stratigr. Geol. Correl., 2014, vol. 22, no.3, pp. 269–286.
Ogg, J.G., Ogg, G., and Gradstein, F.M., The Concise Geologic Time Scale, Cambridge: Univ. Press, 2008.
Resheniya Vtorogo Mezhvedomstvennogo regional’nogo stratigraficheskogo soveshchaniya po dokembriyu i fanerozoyu Severo-Vostoka SSSR (Magadan, 1974-1975 gg.) (Resolutions of the 2nd Interdepartmental Regional Stratigraphic Meeting on the Precambrian and Phanerozoic of the Northeastern USSR, Magadan, 1974–1975), Magadan: GKP SVTGU, 1978 [in Russian].
Resheniya Tret’ego Mezhvedomstvennogo regional’nogo stratigraficheskogo soveshchaniya po dokembriyu, paleozoyu i mezozoyu Severo-Vostoka Rossii (Sankt-Peterburg, 2002) (Resolution of the 3rd Interdepartmental Regional Stratigraphic Meeting on the Precambrian, Paleozoic, and Mesozoic of Northeastern Russia (Saint Petersburg, 2002)), St. Petersburg: Vseross. Nauchno-Issled. Geol. Inst., 2009 [in Russian].
Retallack, G.J. and Dilcher, D.L., A coastal hypothesis for the origin and rise to dominance of flowering plants, in Palaeobotany, Palaeoecology, and Evolution.Vol. 2, Niklas, K.J., Ed., New York: Praeger Publ., 1981, pp. 27–77.
Retallack, G.J. and Dilcher, D.L., Cretaceous angiosperm invasion of North America, Cretaceous Res., 1986, vol. 7, pp. 227–252.
Samylina, V.A., Mesozoic flora from left side area of the Kolyma River (Zyrianka coal basin). Part I: Horsetails, ferns, cycadaleans, bennetitaleans, in Tr. Bot. Inst. AN SSSR. Ser. VIII (Trans. Bot. Inst. USSR Acad. Sci. Ser. III), 1964, vol. V, pp. 40–79.
Samylina, V.A., Mesozoic flora from left side area of the Kolyma River (Zyrianka coal basin). Part II: Ginkgoaleans, conifers. General chapters, in Tr. Bot. Inst. AN SSSR. Ser. VIII (Trans. Bot. Inst. USSR Acad. Sci. Ser. III), 1967, vol. VI, pp. 133–176.
Samylina, V.A., Early Cretaceous angiosperms of the Soviet Union based on leaf and fruit remains, J. Linnaean Soc. (Botany), 1968, vol. 61, no. 384, pp. 207–218.
Samylina, V.A., Early Cretaceous floras of the northeastern USSR (problems of establishing Cenophytic floras), in XXVII Komarovskie chteniya (Proc. XXVII Komarov’s Readings), Leningrad: Nauka, 1974.
Samylina, V.A., Melovaya flora Omsukchana (Cretaceous Flora of the Omsukchan, Magadan Region), Leningrad: Nauka, 1976 [in Russian].
Shczepetov, S.V., Stratigrafiya kontinental’nogo mela Severo-Vostoka Rossii (Stratigraphy of the Continental Cretaceous of the Northeastern Russia), Magadan: Severovost. Kompl. Nauchno-Issled. Inst. Dal’nevost. Otd. Ross. Akad. Nauk, 1995 [in Russian].
Shczepetov, S.V. and Herman, A.B., On the Nonmarine Cretaceous stratigraphy and floras of Northeastern Russia, Stratigr. Geol. Correl., 2019, vol. 27, no. 3, pp. 311–322.
Shczepetov, S.V. and Neshataeva, V.Yu., On the problem of Nonmarine Cretaceous strata correlation in the Northeast Russia: the conditions of florogenesis in volcanic areas, Stratigr. Geol. Correl., 2019, vol. 27, no. 6, pp. 649–660.
Shczepetov, S.V., Herman, A.B., and Belaya, B.V., Srednemelovaya flora pravoberezh’ya reki Anadyr’ (stratigraficheskoe polozhenie, sistematicheskii sostav, atlas iskopaemykh rastenii) (Middle Cretaceous Flora on the Right Bank of the Anadyr River: Stratigraphic Range, Taxonomic Composition, and Atlas of Fossil Plants), Magadan: Severovost. Kompl. Nauchno-Issled. Inst. Dal’nevost. Otd. Akad. Nauk SSSR, 1992 [in Russian].
Smiley, Ch.J., Cretaceous floras of Chandler-Colville region, Alaska: stratigraphy and preliminary floristics, Am. Assoc. Petrol. Geol. Bull., 1969a, vol. 53, no. 3, pp. 482–502.
Smiley, Ch.J., Floral zones and correlations of Cretaceous Kukpowruk and Corwin Formations, Northwestern Alaska, Am. Assoc. Petrol. Geol. Bull., 1969b, vol. 53, no. 10, pp. 2079–2093.
Spicer, R.A., Ahlberg, A., Herman, A.B., Kelley, S.P., Raikevich, M., and Rees, P.M., Palaeoenvironment and ecology of the middle Cretaceous Grebenka flora of northeastern Asia, Palaeogeogr., Palaeoclimatol., Palaeoecol., 2002, vol. 184, nos. 1–2, pp. 65–105.
Stebbins, G.L., Flowering Plants: Evolution Above the Species Level, Cambridge, Massachusetts: Belknap Press Harvard Univ. Press, 1974.
Tikhomirov, P.L., Kalinina, E.A., Moriguti, T., Makishima, A., Kobayashi, K., Cherepanova, I.Yu., and Nakamura, E., The Cretaceous Okhotsk–Chukotka Volcanic Belt (NE Russia): geology, geochronology, magma output rates, and implications on the genesis of silicic LIPs, J. Volcanol. Geothermal Res., 2012, vol. 221-222, pp. 14–32.
ACKNOWLEDGMENTS
We are grateful to reviewers N.K. Lebedeva (Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch, Russian Academy of Sciences, Novosibirsk) and A.M. Nikishin (Moscow State University, Moscow) for commentaries, which allowed us to improve the manuscript.
Funding
This work was performed within the framework of the state assignment of the Botanical Institute of the Russian Academy of Sciences “Fossil Plants of Russia and Adjacent Areas: Systematics, Phylogeny, Paleofloristics, and Paleophytogeography” (no. АААА-А19-119021190031-8) (S.V. Shczepetov), as well as the state assignments of the Geological Institute of the Russian Academy of Sciences (nos. 0135-2019-0044 (A.B. Herman) and 0135-2016-0022 (A.V. Moiseev, S.D. Sokolov)). This work was supported by the Russian Foundation for Basic Research, project no. 19-05-00121 (A.B. Herman, S.V. Shczepetov); the Russian Science Foundation, project no. 19-47-04110 (P.L. Tikhomirov, analysis of isotope data); and the research program of the Shilo North-East Interdisciplinary Scientific Research Institute of the Far Eastern Branch of the Russian Academy of Sciences (no. 0288-2017-0002) (P.L. Tikhomirov). The U–Pb dating of Sample 09-308/1 was supported by the Russian Foundation for Basic Research (project mol_a_ved no.18-35-20037).
Reviewers N.K. Lebedeva, S.V. Naugolnykh, and A.M. Nikishin
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Shczepetov, S.V., Herman, A.B., Tikhomirov, P.L. et al. On the Age of the Buor-Kemus Flora of Northeast Asia Based on the Data on the Nonmarine Cretaceous in Eastern Chukotka. Stratigr. Geol. Correl. 28, 429–444 (2020). https://doi.org/10.1134/S0869593820040085
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DOI: https://doi.org/10.1134/S0869593820040085