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PUBLISHED
SINCE 1952

Estonian Journal of Earth Sciences

ISSN 1736-7557 (Electronic)
ISSN 1736-4728 (Print)

Open Access Journal

CiteScore: 1.4

Impact Factor (2022): 1.1

Lower and Middle Ordovician conodonts from the subsurface of SE Estonia and adjacent Russia; pp. 1–21

PDF | doi: 10.3176/earth.2011.1.01

Author

Viive Viira

Abstract

The distribution of conodonts in the Lower–Middle Ordovician beds was studied in five drill core sections of southeastern Estonia. Ten conodont zones and six subzones, from the Paroistodus proteus Zone to the Eoplacognathus lindstroemi Subzone, were established. The peculiarity of the studied sequence is that the Volkhov Stage is notably poor in conodonts, in particular Baltoniodus species. Large specimens of Drepanodus arcuatus and Protopanderodus rectus, however, are found in great numbers in the uppermost Volkhov and lower Kunda stages. The deeper shelf conodont faunas recognized in SE Estonia (Central Baltoscandian confacies belt) are compared with shallow shelf faunas of northern Estonia (North Estonian confacies belt).

References

Bergström, S. M. 1988. On Pander’s Ordovician conodonts: distribution and significance of the Prioniodus elegans fauna in Baltoscandia. Senckenbergiana lethae, 69, 217–251.

Gailite, L. & Ulst, R. 1975. Lower Ordovician stratigraphy and fauna of Latvia. In Geologiya kristallicheskogo fundamenta i osadochnogo chekhla Pribaltiki [Geology and Crystalline Basement and Sedimentary Cover of the East Baltic], pp. 82–131. Zinatne, Riga [in Russian].

Jaanusson, V. 1976. Faunal dynamics in the Middle Ordovician (Viruan) of Baltoscandia. In The Ordovician System. Proceedings of a Palaeontological Association Symposium (Bassett, M. G., ed.), pp. 301–326. University of Wales Press.

Kajak, K. 1962. K geologij jugo-vostochnoj Estonij (po dannym glubokogo bureniya) [On the subsurface geology of South-East Estonia]. Transactions of the Institute of Geology of the Academy of Sciences of the Estonian SSR, X, 33–40 [in Russian].

Kajak, K, Kajak, H., Kivisilla, J., Puura, V., Sarapik, J., Cheban, E. & Gromov, O. 1975. Otchet yuzhno-éstonskogo otryada o kompleksnoj geologo-gidrogeologicheskoj s'emke masshtaba 1 : 200 000 yuzhnoj chasti territorii lista O-35-XXII (v okrestnostyakh Aluksne, Misso, Kaganovo) za 1974–1975 gody [Report of the South Estonian Group on Complex Geological-Hydrogeological Mapping at a Scale of 1 : 200 000 of the Southern Part of the Territory of Chart O-35-XXII (in the Aluksne, Misso and Kaganovo region) in 1974–1975]. Tallinn, EGF 3376, Unpublished mapping report [in Russian].

Kiipli, E., Kiipli, T. & Kallaste, T. 2009. Reconstruction of currents in the Mid-Ordovician–Early Silurian central Baltic Basin using geochemical and mineralogical indicators. Geology, 37, 271–274.
doi:10.1130/G25075A.1

Kiipli, E., Kiipli, T., Kallaste, T. & Ainsaar, L. 2010. Distribution of phosphorus in the Middle and Upper Ordovician Baltoscandian carbonate palaeobasin. Estonian Journal of Earth Sciences, 59, 247–255.
doi:10.3176/earth.2010.4.01

Lindström, M. 1971. Lower Ordovician conodonts of Europe. In Symposium on Conodont Biostratigraphy (Sweet, W. C. & Bergström, S. M., eds), The Geological Society of America, Memoir, 127, 21–61.

Löfgren, A. 1993. Arenig conodont successions from central Sweden. Geologiska Föreningens i Stockholm Förhandlingar, 115, 193–207.

Löfgren, A. 1994. Arenig (Lower Ordovician) conodonts and biozonation in the eastern Siljan District, Central Sweden. Journal of Paleontology, 68, 1350–1368.

Löfgren, A. 2000. Early to Middle Ordovician conodont biostratigraphy of the Gillberga quarry, northern Öland, Sweden. Geologiska Föreningens i Stockholm Förhandlingar, 122, 321–338.

Löfgren, A. 2003. Conodont faunas with Lenodus variabilis in the upper Arenigian to lower Llanvirnian of Sweden. Acta Palaeontologica Polonica, 48, 417–436.

Löfgren, A. 2004. The conodont fauna in the Middle Ordovician Eoplacognathus pseudoplanus Zone of Baltoscandia. Geological Magazine, 141, 505–524.
doi:10.1017/S0016756804009227

Löfgren, A. & Tolmacheva, T. 2008. Morphology, evolution and stratigraphic distribution in the Middle Ordovician conodont genus Microzarkodina. Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 99, 27–48.
doi:10.1017/S1755691008007056

Löfgren, A., Viira, V. & Mens, K. 2005. Conodont biostratigraphy and sedimentary history in the upper Tremadoc at Uuga, Cape Pakri, NW Estonia. Geologiska Föreningens i Stockholm Förhandlingar, 127, 283–293.

Männik, P. 2001. Distribution of conodonts. In Valga (10) Drill Core (Põldvere, A., ed.), Estonian Geological Sections, 3, 10–12.

Männik, P. 2003. Distribution of Ordovician and Silurian conodonts. In Ruhnu (500) Drill Core (Põldvere, A., ed.), Estonian Geological Sections, 5, 17–23.

Männik, P. & Viira, V. 2005. Distribution of Ordovician conodonts. In Mehikoorma (421) Drill Core (Põldvere, A., ed.), Estonian Geological Sections, 6, 16–20.

Männil, R. 1963. The biostratigraphic subdivision of the Ordovician strata in western Latvia. In Studies of the Institute of Geology of the Academy of Sciences of the ESSR, XIII, 41–74 [in Russian, with English summary].

Männil, R. 1966. Evolution of the Baltic Basin During the Ordovician. Valgus, Tallinn, 200 pp. [in Russian, with English summary].

Männil, R. 1990. The Ordovician of Estonia. In Field Meeting Estonia 1990. An Excursion Guidebook (Kaljo, D. & Nestor, H., eds), pp. 11–20. Estonian Academy of Sciences, Tallinn.

Männil, R. & Meidla, T. 1994. The Ordovician System of the East European Platform (Estonia, Latvia, Lithuania, Byelorussia, parts of Russia, the Ukraine and Moldova). International Union of Geological Sciences Publication, 28, 9–14.

Murphy, M. A. & Salvador, A. 1998. International Stratigraphic Guide – An abridged version. Episodes, 22, 255–271.

Nõlvak, J., Hints, O. & Männik, P. 2006. Ordovician timescale in Estonia: recent developments. Proceedings of the Estonian Academy of Sciences, Geology, 55, 95–108.

Puura, V. & Vaher, R. 1997. Cover structure. In Geology and Mineral Resources of Estonia (Raukas, A. & Teedumäe, A., eds), pp. 167–177. Estonian Academy Publishers, Tallinn.

Põldvere, A. (ed.). 1998. Tartu (453) drill core. Estonian Geological Sections, 1, 1–46.

Põldvere, A. (ed.). 2001. Valga (10) drill core. Estonian Geological Sections, 3, 1–50.

Põldvere, A. (ed.). 2005. Mehikoorma (421) drill core. Estonian Geological Sections, 6, 1–67.

Põldvere, A. (ed.). 2007. Tsiistre (327) drill core. Estonian Geological Sections, 8, 1–55.

Rasmussen, J. A. & Stouge, S. 1995. Late Arenig–early Llanvirn conodont biofacies across the Iapetus ocean. In Ordovician Odyssey: Short Papers for the 7th International Symposium on the Ordovician System (Cooper, J. D., Droser, M. I. & Finney, S. C., eds), pp. 443–447. SEPM Pacific Section, Fullerton, California, Book 77.

Springis, T. 1974. Lithostratigraphic subdivisions of the Lower and Middle Ordovician of West and central Latvia. In Regional¢naya geologiya Pribaltiki [Regional Geology of the East Baltic] (Sorokin, V. S., ed.), pp. 26–31. Zinatne, Riga [in Russian].

Ulst, R. 1976. Stratigraphical significance of the late Tremadocian and Arenigian graptolites of the Middle East Baltic area. In Graptolity i stratigrafiya [Graptolites and Stratigraphy] (Kaljo, D. L. & Koren, T. N., eds), pp. 214–221. Tallinn [in Russian].

Ulst, R. & Gailite, L. 1976. Ordovician System. In Stratigraficheskie skhemy Latvijskoj SSR [Stratigraphic Schemes of the Latvian SSR] (Birkis, A. P. et al., eds), pp. 36–64. Zinatne, Riga [in Russian].

Ulst, R., Gailite, L. & Yakovleva, V. 1982. Ordovik Latvii [The Ordovician of Latvia]. Zinatne, Riga, 294 pp. [in Russian].

Ulst, R., Gailite, L. & Springis, T. 1984. Lithostratigraphic subdivision of the subsurface Ordovician rocks of the Jelgava Depression. In Stratigrafiya drevnepaleozojskikh otlozhenij Pribaltiki [Stratigraphy of the Early Paleozoic Sediments of the East Baltic] (Männil, R. M. & Mens, K. A., eds), pp. 63–76. Institute of Geology, Tallinn [in Russian, with English summary].

Väärsi, A., Kajak, K., Kajak, H., Pastuhova, A. & Paulman, V. 1964. Otchet Vyruskoj partii o kompleksnoj geologo-gidrogeologicheskoj s¢emke masshtaba 1 : 200 000 yugo-vostochnoj chasti ESSR za 1962–1964 gody [Report on the Complex Geological-Hydrogeological Mapping at a Scale of 1 : 200 000 of the Southeastern Part of Estonia]. Tallinn, EGF 2301, Unpublished mapping report, 352 pp. [in Russian].

Viira, V. 1967. Ordovician conodont succession in the Ohesaare core. Eesti NSV Teaduste Akadeemia Toimetised, Keemia, Geoloogia, 16, 319–329 [in Russian, with English summary].

Viira, V. 1974. Ordovician Conodonts of the East Baltic. Valgus, Tallinn, 143 pp. [in Russian, with English summary].

Viira, V. & Löfgren, A. 2008. Lower and Middle Ordovician conodonts from south-eastern Estonia and adjacent Pskov region from Russia. In The Seventh Baltic Stratigraphical Conference. Abstracts and Field Guide (Hints, O., Ainsaar, L., Männik, P. & Meidla, T., eds), p. 73. Geological Society of Estonia, Tallinn.

Viira, V. & Männik, P. 1999. Distribution of conodonts. In Taga-Roostoja (25A) Drill Core (Põldvere, A., ed.), Estonian Geological Sections,2, 9–10.

Viira, V., Löfgren, A., Mägi, S. & Wickström, J. 2001. An Early to Middle Ordovician succession of conodont faunas at Mäekalda, northern Estonia. Geological Magazine, 138, 699–718.
doi:10.1017/S0016756801005945

Viira, V., Mens, K. & Nemliher, J. 2006a. Lower Ordovician Leetse Formation in the North Estonian Klint area. Proceedings of the Estonian Academy of Sciences, Geology, 55, 156–174.

Viira, V., Löfgren, A. & Sjöstrand, J. 2006b. Distribution of Ordovician conodonts. In Kerguta (565) Drill Core (Põldvere, A., ed.), Estonian Geological Sections, 7, 11–13.

Zhang, J. H. 1999. Review of the Ordovician conodont zonal index Eoplacognathus suecicus Bergström, 1971. Palaeontology, 73, 487–493.

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