Geologicheskii Vestnik

The data on the algal assemblage of the Lower Permian (Cisuralian) deposits of the Kushtau Shikhan is considered for the first time. The algae were studied in thin sections made from core of borehole drilled in the saddle of the Kushtau Shikhan. The drilled interval included Asselian-Sakmarian deposits. In the Lower Permian deposits of the Bashkirian (Sterlitamak) shikhans, tubiphytes are the most numerous, conditionally attributed to the family of blue-green algae Girvanellaceae. Tubiphytes are also known on the Shakhtau, Toratau and Yuraktau shikhans, where they are rock-forming. The calcareous siphon algae studied from the material of borehole 30 Kushtau include species of the green algae families: Dasycladaceae (Kützing, 1843) Stizenberger, 1860, Cyclocrinaceae Maslov, 1956, Anchicodiaceae Shuysky in Chuvashov et al., 1987. Among dominating green algae the representatives of the genus Pseudoepimastopora, Atractyliopsis, Globuliferoporella, Neoanchicodium are numerous. A total number of species (21), previously known from the Shakhtau Shikhan, have been identified in the borehole 30 in Kushtau.

Southern Urals, algae, Permian system, Cisuralian Series

• Gorozhanina E.N., Gorozhanin V.M. (2019). Geopark «Toratau»: pamyatniki prirody — permskiye karbonatnyye massivy Toratau, Shakhtau, Kushtau, Yuraktau [Geopark “Toratau”: natural monuments — Permian carbonate massifs Tratau, Shakhtau, Kushtau, Yuraktau]. Geologicheskii vestnik, 3, 161–170. DOI: 10.31084 / 2619–0087 / 2019‑3‑11 (in Russian).
• Ivanova R.M. (2013). Izvestkovyye vodorosli karbona Urala [Carboniferous calcareous algae of the Urals]. Ural Branch of RAS Publ., Ekaterinburg, 244 p. (In Russian).
• Korolyuk I.K. (1985). Metody I rezul’taty izucheniya permskogo rifogennogo massiva Shakhtau (Bashkirskoye Priural’ye) [Methods and results of the study of the Permian Shakhtau reef massif (Bashkirian Urals)]. Nauka Publ., Moscow, 112 p. (In Russian).
• Kulik E.L. (1978). Izvestkovyye zelenyye (sifonovyye) vodorosli assel’skogo i sakmarskogo yarusov biogermnogo massiva Shakhtau (Bashkiriya). [Calcareous green (siphonal) algae of the Asselian and Sakmarian stages of the Shakhtau bioherm massif (Bashkiria)]. Voprosy micropaleontologii, 21, 183–215. (In Russian).
• Kulik E.L. Korolyuk I.K., Rauser-Chernousova D.M. (1978). K voprosu o stratigraficheskom i fatsial’nom znachenii assel’skikh i sakmarskikh izvestkovykh vodorosley (po materialam iz biogermnogo massiva Shakhtau, Bashkiriya) [On stratigraphic and facial importance of Asselian and Sakmarian calcareous algae (on the example of the Shakhtau bioherm massif, Bashkiria]. Voprosy micropaleontologii, 21, 216–233 (in Russian).
• Maslov V.P. (1956). Iskopayemyye izvestkovyye vodorosli SSSR [Fossil calcareous algae of the USSR]. Academy of Sciences of the USSR, Мoscow. 300 p. (Proceedings GIN RAS; Issue 160) (in Russian).
• Maslov V.P. (1963). Osnovy paleontologii. Vodorosli, mokhoobraznyye, psilofitovyye, plaunovidnyye, chlenistostebel’nyye, paporotniki [Fundamentals of paleontology. Algae, bryophytes, psilophytes, lycopsids, arthropods, ferns]. Academy of Sciences of the USSR, Moscow, p. 252–259 (in Russian).
• Maslov V.P. (1973). Atlas porodoobrazuyushchikh organizmov (izvestkovykh I kremnevykh) [Atlas of rock-forming organisms (calcareous and silicic)]. Nauka Publ., Moscow, 268 p. (In Russian).
• Rauzer-Chernousova D.M. (1950). Fatsii verkhnekamennougol’nykh i artinskikh otlozheniy SterlitamakskoIshimbayevskogo Priural’ya na osnove izucheniya fuzulinid [Facies of the Upper Carboniferous and Artinskian deposits of the Sterlitamak-Ishimbayevsky Cis-Urals based on the study of fusulinids]. Academy of Sciences of the USSR Publ., Moscow, p. 1–139 (Trudy instituta geologicheskikh nauk AN SSSR, Vyp. 119. Geologichesaya seriya (No 43) (in Russian).
• Chuvashov B.I. (1974). Permskiye izvestkovyye vodorosli Urala [Permian calcareous algae of the Urals], in: G.N. Papulov and B.I. Chuvashov. (ed.), Vodorosli, brakhiopody i miospory iz permskikh otlozheniy zapadnogo Urala [Algae, brachiopods and myospores from the Permian deposits of the western Urals], Sbornik po voprosam sratigrafii No 20. Sverdlovsk, p. 3–76 (Trudy Instituta geologii i geokhimii Ural’skogo nauchnogo tsentra AN SSSR. Vyp. 109) (in Russian).
• Chuvashov B.I., Gareev E.Z. (2014). Geologicheskaya kharakteristika rifovykh massivov Sterlitamakskoy gruppy [Geological characteristics of the reef massifs of the Sterlitamak group], in: Melent’yev A.I., Martynenko V.B. (Eds.), Unikal’nyye pamyatniki prirody — shikhany Tratau i Yuraktau [Unique monuments of nature are shikhans of Tratau and Yuraktau]. Gilem, Bashkirskaya entsiklopediya Publ., Ufa, p. 1–24 (in Russian).
• Chuvashov B.I., Dyupina G.V. (19 73). Verkhnepaleozoyskiye terrigennyye otlozheniya zapadnogo
  sklona Srednego Urala [Upper Paleozoic terrigenous deposits of the western slope of the Middle Urals. Nauka Publ., Moscow, 230 p. (In Russian).
• Chuvashov B.I., Luchinina V.A., Shuisky V.P., Shaikin I.M., Berchenko O.I., Ishchenko A.A., Saltovskaya V.D., Shirshova D.I. (1987). Iskopayemyye izvestkovyye vodorosli [Fossil calcareous algae]. Nauka Publ., Novosibirsk, 224 p. (Proceedings of the Institute of Geology and Geophysics.
  Issue 674) (in Russian).
• Chuvashov B.I., Shuyskiy V.P. (1988). Stratigraficheskiye i fatsial’nyye kompleksy izvestkovykh vodorosley paleozoya Urala [Stratigraphic and facies assemblages of calcareous algae of the Paleozoic of the Urals], in: Izvestkovyye vodorosli i stromatolity (sistematika, biostratigrafiya, fatsial’nyyanaliz [Calcareous algae and stromatolites (systematics, biostratigraphy, facies analysis]. Nauka Publ., Novosibirsk, p. 9–125 (in Russian).
• Chuvashov B.I., Shuysky V.P., Ivanova R.M. (1993). Stratigraphical and facies complexes of the Paleozoic calcareous algae of the Urals, in: Barattolo F., De Castro P., Parente M. (eds), Studies on fossil benthic algae. Boll Soc. Paleont. Ital., Spec. Vol. 1, 93–119.
• Mamet B., Nassichuk W., Roux A. (1979). Late Paleozoic Algae and stratigraphy of the Canadian Arctic // Bull. Cent. Rech. Expior-Prod. Elf-Aquitaine. Pau, 3 (2), 669–683.
• Senowbari-Daryan B. (2013). Tubiphytes Maslov, 1956 and description of similar organisms from Triassic reefs of the Tethys. Facies, (59), 75–112.