Proterozoic acritarchs from the Precambrian-Cambrian transition in southern Moravia (Měnín-1 borehole, Czech Republic)

 

Authors: Vavrdová M

Published in: Bulletin of Geosciences, volume 83, issue 1; pages: 85 - 92; Received 15 May 2007; Accepted in revised form 17 January 2008;

Keywords: Vendian, acritarchs, basal clastics, southern Moravia,

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Abstract

Well preserved and varied sphaeromorphs, filamentous trichomes and synaploid organic-walled microfossils occur in fine-grained clastics in the Měnín-1 borehole. Thirty genera with 40 species have been identified, previously known from Meso- and Neoproterozoic sediments. The Proterozoic microfossils are excellently preserved, not affected by post-diagenetic thermal alteration. The Vendian age is documented by the presence of the taxa Bavlinella faveolata (Shepeleva) Vidal, 1976, Chabiosphaera bohemica Drábek, 1972, Obruchevella valdaica (Shepeleva ex Aseeva) Jankauskas et al., 1989, Podolina minuta Hermann in Timofeev et al., 1976, and Primoflagella speciosa Gnilovskaya, 1983. The palynological residuum contained no acritarch species of Early Cambrian age, although the basal Cambrian Asteridium tornatum-Comasphaeridium velvetum palynozone was ascertained from 266 m below the level with acritarchs. Thin sections from the Měnín-1 borehole suggest a possible presence of more than 600 m of Vendian sediments. Irrespective of the possible secondary origin of the recovered microfossils, the existence of extensive Proterozoic marine sedimentation within the southern part of the Brunovistulicum is clearly demonstrated. Sediments from the Precambrian-Cambrian transition were not subjected to Cadomian or younger metamorphic processes.

References

Belka, Z., Ahrendt, H., Franke, W. & Wemmer, K. 2000. The Baltica-Gondwana suture in Central Europe: evidence from K-Ar ages of detrital muscovites and biogeographical data, 87–102. In FRANKE, W., HAAK, V., ONCKEN, O. & TANNER, D. (eds) Orogenic processes: Quantification and Modelling in the Variscan belt. Geological Society of London, Special Publications 179.

Breemen, O. van, Aftalion, M., Bowes, D.R., Dudek, A., Mísař, Z., Povondra, P. & Vrána, S. 1982. Geochronological studies of the Bohemian Massif, Czechoslovakia, and their significance in the evolution of Central Europe. Transactions of the Royal Society Edinburgh, Earth Sciences 73, 89–108.

Buła, Z., Jachowicz, M. & Żaba, J. 1997. Principal characteristics of the Upper Silesian Block and Malopolska Block Zone. Geological Magazine 134(5), 669–677.

Chlupáč, I. 1967. Devonian in Czechoslovakia. International Symposium on the Devonian System, Calgary 1967, 109–126.

Drábek, K. 1972. Chabiosphaera bohemica n. g., n. sp. (Acritarcha) from the Precambrian of central Bohemia. Věstník Ústředního ústavu geologického 47, 161–163.

Dudek, A. 1980. The crystalline basement block of the Outer Carpathians in Moravia: Bruno-Vistulicum. Rozpravy Československé akademie věd,Řada matematicko-přírodních věd 90(8), 1–85.

Dvořák, J. 1998. Lower Devonian basal clastics – Old Red Formation, Southern Moravia, Czech Republic. Bulletin of the Czech Geological Survey 73(1), 55–60.

Eisenack, A. 1958. Mikrofossilien aus dem Ordovizium des Baltikums. 1. Markasitschicht, Dictyonema-Schiefer, Glaukonitsand, Glaukonitkalk. Senkenbergiana lethaea 39(5–6), 389–405.

Eisenack, A. 1965. Mikrofossilien aus dem Silur Gotlands. Problematika. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 122(3), 257–274.

Fensome, R.A., Williams, G.L., Barrs, M.S., Freeman, J.E. & Hill, J.M. 1990. Acritarchs and fossil Prasinophytes: an index to genera, species and intraspecific taxa. AASP Contributions Series 25, 1–655.

Finger, F. & Pin, C. 1997. Arc-type crustal zoning in the Bruno-Vistulicum, Eastern Czech Republic: a trace of the Late-Proterozoic Euro-Gondwana margin. Journal of the Czech Geological Society 42(3), 53.

Finger, F., Schitter, F., Riegler, G. & Krenn, E. 1999. The history of Brunovistulicum: Total-Pb Monazite ages from the metamorphic complex. Geolines 8, 21.

Franke, D. 1995. The Caledonian terranes along the southwestern border of the East European Platform - evidence, speculations and open questions. In GEE, D.G. & BECKHOLMEN, M. (eds) The Trans-European suture Zone EUROPROBE in Liblice 1993. Studia Geophysica et Geodetica 39, 241–156.View article

Gardiner, P.R.R. & Vanguestaine, M. 1971. Cambrian and Ordovician microfossils from south-east Ireland and their implications. Geological Survey of Ireland, Bulletin 1(2), 163–210.

Gnilovskaya, M.B. 1983. Vendotaenides, 46–55. In URBANEK, A. & ROZANOV, A.Y. (eds) Upper Precambrian and Cambrian palaeontology of the East-European Platform. Wydawnictwa geologiczne, Warszawa.

Hermann, T.N. 1974. Nachodki masovych skopleniy v rifee, 6–10. In TIMOFEEV, B.V. (ed.) Mikrofosilii proterozoya i rannego paleozoya SSSR. Paleontologicheskii Zhurnal 1981(2).

Hermann, T.N. 1981. Findings of filamentous algae in the Miroedikcha Formation of the Late Precambrian age. Paleontologicheskii Zhurnal 4, 118–122 (in Russian).

Hermann, T.N. 1990. Organicheskyi mir milliard let nazad. (Organic world billion year ago.) 50 pp. Academy of Sciences of the USSR, Institute of Precambrian Geology and Geochronology, Leningrad.

Hofmann, H.J. & Jackson, G.D.1994. Shale-facies microfossils from the Bylot Supergroup, Baffin Island, Canada. Journal of Paleontology 68(4), 1–35.

Jachowicz, M. 2006. Palynological investigation of Precambrian rocks on the Małopolska Block – foreland of the East/European Platform, 28. In BEK, J., BROCKE, R., DAŠKOVÁ, J. & FATKA, O. (eds) Palaeozoic palynology in space and time: CIMP General Meeting in Prague 2006.

Jankauskas, T.V. 1978. Plant microfossils from the Riphean deposits of the south Ural. Doklady Academii nauk SSSR 242(4), 913–915.

Jankauskas, T.V. 1979. Middle Riphean microbiotas of the Southern Urals. Akademia nauk SSSR, Doklady 248(1), 190–193 (in Russian)

Jankauskas, T.V. 1980. New algae from the Upper Riphean of the Southern Urals and the Ural forelands. Paleontologicheskii Zhurnal 4, 107–113.

Jankauskas, T.V., Mikhaylova, N.S. & Hermann, T.N. 1989. Mikrofossilii dokembrija SSSR. 190 pp. Nauka, Leningrad.

Jaworowski, K. & Sikorska, M. 2006. Lysogóry Unit (Central Poland) versus East European Craton – application of sedimentological data from Cambrian siliciclastic association. Geological Quarterly 50(1), 77–88.

Kalvoda, J., Leichmann, J. Babek, O. & Melichar, R. 2003. Brunovistulian terrane(Central Europe) and Istanbul zone (NW Turkey): Late Proterozoic and Paleozoic tectonostratigraphic development and Paleogeography. Geologica Carpathica 54(3), 139–152.

Knoll, A.H. & Swett, K. 1987. Micropaleontology across the Precambrian-Cambrian boundary in Spitsbergen. Journal of Paleontology 61(5), 898–926.

Knoll, A.H., Swett, K. & Mark, J. 1991. Paleobiology of a Neoproterozoic tidal flat/lagoonal complex: The Draken Conglomerate Formation, Spitsbergen. Journal of Palaeontology 65, 531–570.

Lindgren, S. 1982. Algal coenobia and leiospheres from the Upper Riphean of the Turukhansk region, eastern Siberia. Stockholm Contributions in Geology 38(3), 35–45.

Lo, S.C. 1980. Microbial fossils from the lower Yudoma suite, earliest Phanerozoic, Eastern Siberia. Precambrian research 13, 109–166.View article

Maithy, P.K. & Shukla, M. 1977. Microbiota from the Suket Shales, Ramapura, Vindhyan System (Late Precambrian), Madhya Pradesh. The Paleobotanist 23, 176–188.

Mankiewicz, C. 1992. Obruchevella and other microfossils in the Burgess Shale: preservation and affinity. Journal of Paleontology 66(5), 717–729.

Moczydłowska, M. 1991. Acritarch biostratigraphy of the Lower Cambrian and the Precambrian-Cambrian boundary in southeastern Poland. Fossils and Strata 29, 1–127.

Moczydłowska, M. 1995. Cambrian microplankton distribution in Iberia and baltica, and possible palaeogeographic relationship, 117–120. In Rodrigez Alonso, M.D. & Gonzalo Corral, J.C. (eds) XIII Reunion de Geologia del Oeste peninsular. Annual IGCP Project 319-320 Meeting Salamanca, Communicaciones.

Moczydłowska, M. & Vidal, G. 1988. Early Cambrian acritarchs from Scandinavia and Poland. Palynology 12, 1–10.

Moczydłowska, M., Vidal, G. & Rudavskaya, V.A. 1993. Neoproterozoic (Vendian) phytoplankton from the Siberian Platform, Yakutia. Palaeontology 36(3), 495–521.

Moormann, M.A. 1974. Microbiota of the late Proterozoic hector Fromation, southwestern alberta, Canada. Journal of Micropalentology 48, 528–539.

Nawrocki, J. & Poprawa, P. 2006. Development of the Trans-European Suture Zone in Poland: from Ediacaran rifting to Early Paleozoic accretion. Geological Quarterly 50, 59–76.

Nyberg, A.V. & Schopf, W. 1984. Microfossil in stromatolitic cherts from the Upper Proterozoic Minyar Formation, southern Ural mountains. Journal of Paleontology 58, 738–772.

Prasad, B. & Asher, R. 2001. Acritarch biostratigraphy and lithostratigraphic classification of Proterozoic and Lower Palaeozoic sediments (pre-unconformity sequence) of Ganga basin, India. Oil and Natural Gas Corporation Lim., 1–95. Dehra Dun

Pharaoh, T.C. 1999. Palaeozoic terranes and their lithostratigraphic boundaries within the Trans-European Suture Zone (TESZ): a review. In THYBO, H., PHARAOH, T. & GUTERCH, A. (eds) Geophysical investigation of the Trans-European suture zone. Tectonophysics 314, 17–41.View article

Raumer, J.F. von, Stampfli, G.M. & Bussy, F. 2003. Gondwana-derived microcontinents – the constituents of the Variscan and Alpine collisional orogens. Tectonophysics 365, 7–22.

Schopf, J.W. 1968. Microflora of the Bitter Springs Formation, Late Precambrian, central Australia. Journal of Palaeontology 42, 651–688.

Shepeleva, E.D. 1974. Stratigraficheskoe raschlenenie vendskich otlozenij centralnych rayonov Russkoy platformy po akritarcham, 50–72. In VOZZHENNIKOVA, B.V., TIMOFFEEV, B.V. & SHESHEGOVA, L.I. (eds) Mikrofossilii SSSR. Transaction of the Institute of the Geology and Geophysics 81.

Suk, M. 1984. Geological history of the territory of the Czech Socialist Republic. 361 pp. Academia, Geological Survey, Prague.

Timofeev, B.V. 1966. Mikropaleofitologicheskoe issledovanie drevnikh svit. 147 pp. Akademia nauk SSSR, Nauka, Moscow.

Timofeev, B.V. 1969. Spheromorphides of the Proterozoic (Sferomorfidy proterozoy). 145 pp. Nauka, Moskva.

Timofeev, B.V. 1973. Microfossils of the Precambrian age from Ukraina. 58 pp. Akademia nauk SSSR, Izdatelstvo Nauka, Leningrad. (in Russian)

Timofeev, B.V., Hermann, T.N. & Mikhaylova, N.S. 1976. Microfossils from the Precambrian, Cambrian and Ordovician (Mikrofitofossilii dokembryia kembryia i ordovika). 107 pp. Nauka, Leningrad.

Vavrdová, M. 2006. Two benthic microbial assemblages from the Měnín – 1 borehole, (Early Cambrian, Czech Republic). Bulletin of Geosciences 81(2), 115–122.View article

Vavrdová, M., Mikuláš, R. & Nehyba, S. 2003. Lower Cambrian siliciclastic sediments in southern Moravia (Czech Republic) and their paleogeographical constraints. Geologica Carpathica 54(2), 67–79.

Vidal, G. 1976. Late Precambrian microfossils from the Visingso beds in southern Sweden. Fossils and Strata 9, 1–57.

Vidal, G. 1979. Acritarchs from the Upper Proterozoic and Lower Cambrian of East Greenland. Gr?nlands geologiske unders?gelse 134, 1–40.

Vidal, G. 1981. Micropaleontology and biostratigraphy of the Upper Proterozoic and Lower Cambrian sequence in East Finnmark, Northern Norway. Norges geologiske unders?eke 362, 1–53.

Vidal, G. & Ford, T.D. 1985. Microbiotas from the Late Proterozoic Chuar Group (Northern Arizona) and Uinta Group (Utah) and their chronostratigraphic implications. Precambrian Research 28, 349–389.View article

Vidal, G. & Knoll, A.H. 1983. Proterozoic plankton. Geological Society of America, Memoir 161, 265–277.

Vidal, G. & Moczydłowska, M. 1992. Patterns of phytoplankton radiation across the Precambrian-Cambrian boundary. Journal of the Geological Society of London 149, 647–654.View article

Vidal, G. & Sedliecka, A. 1983. Planktonic, acid-resistant microfossils from the Upper Proterozoic strata of the Barents Sea region of Varanger Peninsula, East Finmark, Northern Norway. Norges Geologiske Undersogelse Bulletin 382, 45–79.

Yin, L.-M. 1991. Late Proterozoic microfossils from the Tongjiazhuang Formation, Western Shandong, China. Acta Paleontologica Sinica 8(3), 253–269.

Yin, L.-M. 1997a. Precambrian-Cambrian transitional biostratigraphy of the Yangtze Platform. Bulletin of the National Museum of Natural Science 10, 217–231.

Yin, L.-M. 1997b. Acanthomorphic acritarchs from Meso-Neoproterozoic shales of the Ruyang Group, Shanxi, China. Revue of the Palaeobotany and Palynology 98, 15–25.View article

Zhang, Y. 1981. Proterozoic stromatolite microfloras of the Gaoyuzhuang Formation (Early Sinian: Riphean), Hebei, China. Journal of Paleontology 55, 485–506.