Abstract
Results of the detailed study of Miocene volcanic ashes from Kerch and Taman peninsulas are presented. Based on the distribution of pyroclastics in the rocks under consideration, the Sarmatian and late Meotian stages of volcanic activity are distinguished. In close association with other geological data, results of the first microprobe analysis of the volcaniclastic materials are analyzed. It has been revealed that Sarmatian ashes are characterized by rhyolitic composition, whereas upper Meotian ashes correspond to dacites and rhyodacites. Decrease of silicate content and increase of alkalinity in the studied pyroclastic rocks are traced from ancient to younger sediments. The upper Meotian volcanics are noted for higher concentration of potassium. The predominantly vitroclastic Kerch-Taman ashes with a low content of calcium and high contents of potassium and sodium most likely belong to a single magmatic center. Stages of volcanic events and petrochemical similarity of composition of the magmatic products suggest that the studied ash material belongs to volcanic centers of the Lesser Caucasus.
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Abovyan, S.B., Adamyan, A.A., Bagdasaryan, G.P., et al., Miocene-Pliocene Volcanic Rocks, in Geologiya Armyanskoi SSR (Geology of the Armenian SSR), Yerevan: Akad. Nauk ArmSSR, 1970, vol. 4.
Andrusov, N.I., Izbrannye trudy (Selected Works), Moscow: Akad. Nauk SSSR, 1961, vol. 1, pp. 593–667.
Aslanyan, A.T., Bagdasaryan, G.P., Gabunia, L.K., et al., Radiometric Dating of Neogene Volcanic Rocks in the Georgian SSR, Armenian SSR, and Part of Nakhichevan ASSR, Izv. Akad. Nauk ArmSSR. Nauki Zemle, 1982, vol. 35, no. 1/3, pp. 3–24.
Belokrys, L.S., The Ash Content in Sarmatian Rocks of the Southern Ukrainian SSR, Geol. Zh., 1981, vol. 41, no. 1, pp. 92–98.
Chumakov, I.S., Byzova, S.L., and Ganzei, S.S., Geokhronologiya i korrelyatsiya pozdnego kainozoya Paratetisa (Late Cenozoic Geochronology and Correlation of the Paratethys), Moscow: Nauka, 1992.
Chumakov, I.S., Golovin, D.I., and Ganzei, S.S., Geochronology of the Meotian (Upper Miocene) Stage of the Eastern Paratethys, Dokl. Akad. Nauk, 1996, vol. 347, no. 3, pp. 372–373 [Dokl. Earth Sci. (Engl. Transl.), 1996, vol. 347A, no. 3, pp. 373–374].
Danilovich, L.G., Kislyi vulkanizm Karpat (Acid Volcanism in the Carpathians), Kiev: Naukova Dumka, 1976, pp. 59–134.
Karlov, N.N., History of the Study of Volcanic Ashes in the European Part of the USSR, Byull. Mosk. O-va Ispyt. Prir., Otd. Geol., 1957, vol. 32, no. 2, pp. 25–47.
Klimaticheskii atlas SSSR (Climatic Atlas of the USSR), Moscow: Glavn. Upravl. Gidrometeorolog. Sluzhby Sov. Min. SSSR, 1962.
Kolesnikov, V.P., Upper Miocene, in Stratigrafiya SSSR. Neogen SSSR (Stratigraphy of the USSR: Neogene), Moscow: Akad. Nauk SSSR, 1940, vol. 8, pp. 229–366.
Kostyuk, V.P., Geologo-petrografichnii naris magmatizmu Karpat (The Geologic-Petrographic Composition of Magmatism in the Carpathians), Kiev: Akad. Nauk USSR, 1961, pp. 106–130.
Milanovskii, E.E. and Koronovskii, N.V., Orogennyi vulkanizm i tektonika Alpiiskogo poyasa Evrazii (Orogenic Volcanism and Tectonics of the Alpine Belt in Eurasia), Moscow: Nedra, 1973, pp. 161–169.
Pécskay, Z., Lexa, J., Szakács, A., et al., Space and Time Distribution of Neogene-Quaternary Volcanism in the Carpatho-Pannonian Region, Acta Vulcanologica, 1995, vol. 7, no. 2, pp. 15–28.
Popov, V.S. and Zastrozhnov, A.S., Neogene Reference Sections of the Eastern Paratethys (Taman Peninsula), in Putevoditel ekskursii (Guidebook for Excursions), Volgograd, 1998.
Rostovtseva, Yu.V. and Goncharova, I.A., Lithological-Paleontological Characteristics of Upper Miocene Rocks of the Taman Peninsula (with Reference to the Settlement of Taman), Vestnik Mosk. Gos. Univ., Ser. 4: Geol., 2006, no. 1, pp. 15–26.
Roşu, E., Seghedi, I., Downes, H., et al., Extension-Related Miocene Calc-Alkaline Magmatism in the Apuseni Mountains, Romania: Origin of Magmas, Swiss Bull. Miner. Petrol., 2004, vol. 84/1, pp. 1–25.
Sayanov, V.S. and Peres, F.S., Ash Tuffs from Miocene Rocks of the Moldavian SSR, Izv. Moldav. Fil. Akad. Nauk SSSR, 1960, no. 9(75), pp. 45–59.
Seghedi, I., Downes, H., Pécskay, Z., et al., Magmagenesis in a Subduction-Related Post-Collisional Volcanic Arc Segment: The Ukrainian Carpathians, Lithos, 2001, vol. 57, pp. 237–262.
Shcherbakova, M.N., Pyroclastic Material from Lacustrine-Marine Sediments of the Eastern Paratethys during the Last 14 Ma, Vest. Mosk. Gos. Univ., Ser. 4: Geol., 1999, no. 1, pp. 28–34.
Skhirtladze, N.I., Postpaleogenovyi effuzivnyi vulkanizm Gruzii (Postpaleogene Effusive Volcanism in Georgia), Tbilisi: Geol. Inst. Akad. Nauk GSSR, 1958, pp. 7–122.
Stratigrafiya SSSR. Neogenovaya sistema (Stratigraphy of the USSR: Neogene System), Moscow: Nedra, 1986, vol. 1, pp. 184–204.
Temel, A., Gündoĭdu, M.N., Gourgaud, A., and Le Pennec, J-L., Ignimbrites of Cappadocia (Central Anatolia, Turkey): Petrology and Geochemistry, J. Volcan. Geotherm. Res., 1998, vol. 85, pp. 447–471.
Wilson, M., Tankut, A., and Guleç, N., Tertiary Volcanism of the Galatia Province, North-West Central Anatolia, Turkey, Lithos, 1997, vol. 42, pp. 105–121.
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Original Russian Text © Yu.V. Rostovtseva, O.V. Parfenova, 2006, published in Litologiya i Poleznye Iskopaemye, 2006, No. 5, pp. 494–504.
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Rostovtseva, Y.V., Parfenova, O.V. Middle-upper Miocene volcanic ashes of the Kerch-Taman region. Lithol Miner Resour 41, 440–449 (2006). https://doi.org/10.1134/S0024490206050051
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DOI: https://doi.org/10.1134/S0024490206050051