Upper Silurian (Gorstian, Ludfordian, PŘÍDOLÍ) Graptolite Biozonation in the Muhurr area (Albania)


Published: Apr 24, 2020
Keywords:
Upper Silurian Biostratigraphy Graptolites Muhurr Albania.
Pandeli llazar Pashko
Abstract

Three stratigraphical sections and several outcrops through the upper Silurian graptolite shales of the Muhurr area, Albania have been revised. Based on a new detailed re-examination and re-evaluation of graptolite collections and previously unpublished and published studies, a biozonal scheme with much new biostratigraphical data is established. The graptolite assemblages are dominated by Monograptidae: Neodiversograptus, Saetograptus, Bohemograptus, Colonograptus, Pseudomonoclimacis and Lobograptus which are associated with several Retiolitidae. A total of 37 graptolite species has been identified; selected important species are illustrated. The present study recognized and defined the following seven upper Silurian graptolite biozones: nilssoni and scanicus-chimaera in the Gorstian Stage, leintwardinensis, tenuis and formosus in the Ludfordian Stage and parultimus-ultimus and perneri in the Přídolí Series.

Article Details
  • Section
  • Palaeontology, Stratigraphy and Sedimentology
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References
Aliaj, Sh., Kodra, A., 2016. The Albanides setting in the Dinaric-Albanian-Hellenic Belt and their main geological features. Journ. Natyral Technical Sciences 2, (42), 31-73.
Koren, T-N., Lenz, A-C., Loydell, D-K., Melchin, M-J., Storch, P., Teller, L. 1995. Generalized graptolite zonal sequence defining time interval for global palaeogeographic studies. Lethaia, 29, 59-60.
Loydell, D-K., 2012. Graptolite biozones correlation charts. Geol. Magaz. 149 (1) :124-132.
Maletz, J., Konigshof, P., Meco S., Schindler, E., 1998. Late Wenlock to Early Ludlow graptolites from Albania. Seckenbergiana Lethaea, 78 (1/2) , 141- 151.
Meco, S., 1987. Conodonts of Silurian-Devonian boundary in some sections of Korabi Zone. Buletini. Shkenc. Gjeol. 4. (In Alban. Abstr. in English).
Meco, S., 2010. Conodonts and stratigraphy of Paleozoic and Triassic deposits in Korabi Zone (Northeastern Albania). Cour. Forschungsinst. Senckenberg, Francfurt am Main.
Nasi, V., Langora, LL., Zeqja, K., 1973. Graptolite fauna of shale series in Muhurr region, Korabi Zone. Buletin Shkenc. Gjeol. 2, 43-52. (In Alban, Abst. in Frensh).
Pashko, P., 1987. Llandoverian (Silurian) biostratigraphy of the Korabi Zone. Buletin Shkenc Gjeol. 2, 113-121. (In Alban., Abst.in English).
Pashko, P., 1988. Llandoverian graptolites of Buzëmadhe and its biostratigrafical importance. Buletin Shkenc. Gjeol. 1, 45-70. (In Alban. Abst. in English).
Pashko, P., 1989. Upper Silurian Graptolite zonation in the Korabi Zone. Buletin Shkenc. Gjeol.. 2 , 113-126. (In Alban. Abst. in English).
Pashko, P., 1990. Les zonnes graptolitique du Landoverien dans l’Albanie (Zone Korabi). Abstacts. Field Meeting IGCP, Project No.276. p.1
Pashko, P., 1992. Les zonnes graptolitiques du Landoverien dans l’Albanie (Zone Korabi). Mineralia Slovaca. Newsletter No.3, p. 8.
Pashko, P., 2004. Tentakulite biostratigraphy of Devonian deposits in Korabi Zone. Buletin Shkenc. Gjeol. 1, 73-82. (In Alban. Abst. in English).
Pashko, P., 2016. Wenlock graptolite biozones of the Muhurr-Caje Unit (Korabi Zone) and their correlation with the Standad Gaptolite Biozones. Journ. Natyral Technical Sciences 2, (42), XXI, 91-106, Plates 1-2.
Pashko, P., 2019. Graptolite Biostratigraphy of the lower Devonian (Lochkovian) of the Muhurr Area (Albania) : a review with new data. Journ. Natyral Technical Sciences. 48, (XXIV), 57-72.
Sachanski, V., 1993 Boundaries of the Silurian System in Bulgaria defined by graptolites. Geologica Balcanica 23, 1, 25-33.
Sachanski, V., Boncheva, I., Lakova, I.,2005. A continuous section across the Silurian-Devonian boundary in the Kraishte Region:graptolite and conodont biostratigraphy. Bulgarian Geological Society. 80 Anniversary.
Urbanek, A., 1966. The morphology and the evolution of the Cucullograptinae (Monograptidae, Graptolithina). Acta Palaeontol. Polonica XI, 3-4, 292-547.
Xhomo, A., Pashko, P., Meco, S. 1992. La stratigraphie du Silurien dans la Zone de Korabi. Mineralia Slovaca. Newsletter nr. 3, p. 12.
Xhomo, A., Onuzi, K., Pashko, P., Pirdeni, A. 2006. A view on Palaeozoic sediments of Albania. Kolner Forum. Germany, p.7.