New data on conodont biostratigraphy of the Lower and Middle Tournaisian (Carboniferous) from the surrounding of Brno-Líšeň

 

Tomáš Kumpán

Geoscience Research Reports 47, 2014 (GRR for 2013), pages 79–82
Map sheets: Vyškov (24-41)

Full text (PDF, 2.76 MB)

 

Abstract

In the southern part of the Moravian Karst (NE of Brno, Czech Republic) are well exposed Upper Devonian to Mississippian sequences with excellent sedimentary record through the stage boundaries. The Frasnian/Famennian, Famennian/Tournaisian and Tournaisian/Viseán boundaries were determined as well as the global Kellwasser, annulata and Hangenberg Events. Preliminary results of the recent biostratigraphic research on the Lower/Middle Tournaisian Substage boundary (globally accompanied by the Lower Alum Event) in the Lesní lom, Anaklety and Bělkův mlýn sections are presented herein. Complete succession of the Early Tournaisian conodont zones (from the sulcata up to the hassi Zone) was previously documented above the the well preserved Famennian beds in the Lesní lom Quarry, Brno-Líšeň. Abundant conodonts of the upper part of the hassi and sandbergi Zone have been studied recently. Stratigraphically very important conodont Siphondella belkai is documented there for the first time from the Moravian Karst Paleozoic. Si. belkai represents the index taxon for the belkai Zone, used in the Russian regions. Abundant conodonts of the quadruplicata Zone were documented 400 m SE to the Bělka Mill in the Říčka Valley. In the Anaklety sections Lower to Middle Tournaisian (Isulcata-crenulata Zone) limestones unconformably overlie the Upper Famennian. Joint presence of conodonts and foraminifers gives a good opportunity for precise correlation between the deep to shallow water successions in the Western and Eastern Europe. Ichthyoliths, trilobites, brachiopods, and other fauna also occur
 

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