Middle Pleistocene stratigraphy of the deposits in Za Hájovnou Cave (Javoříčko Karst, northern Moravia, Czech Republic).

Stránky

107-119

Citace

IVANOV, Martin, SABOL, Martin, MUSIL, Rudolf a DOLÁKOVÁ, Nela. Middle Pleistocene stratigraphy of the deposits in Za Hájovnou Cave (Javoříčko Karst, northern Moravia, Czech Republic). Fossil Imprint / Acta Musei Nationalis Pragae, Series B – Historia Naturalis Praha: Národní muzeum, 2014, 70(1-2), 107-119. ISSN 2533-4050 (tisk), 2533-4069 (online). Dostupné také z: https://www.nm.cz/periodicke-publikace/fiamnpsbhn/70-1-2/middle-pleistocene-stratigraphy-of-the-deposits-in-za-hajovnou-cave-javoricko-karst-northern-moravia-czech-republic

Fossil Imprint / Acta Musei Nationalis Pragae, Series B – Historia Naturalis | 2014/70/1-2

Za Hájovnou Cave (Javoříčko Karst, northen Moravia, Czech Republic) is a unique Middle Pleistocene locality. Paleontological material comes from different types of sediments in superposition of fluvial deposits of the sinkhole which was active until the maximum of the Cromerian Interglacial I, MIS 19 (B/M palaeomagnetic boundary, 781 ka). Stratigraphic interpretation was based mainly on 230Th/U dating, sedimentology, study of mammal assemblages and palynology. Sediments were divided into 5 groups of layers on the basis of lithological content and character of bone preservation. The 2nd group of layers was the most important for the stratigraphy of the Middle Pleistocene deposits. Three warm stages were documented by the study of sediments and their palaeontological content. We presuppose two stratigraphical alternatives. Alternative A: warm stage III corresponds most probably to MIS 9a, warm stage II could correspond to MIS 9c, warm stage I corresponds to MIS 11. Alternative B: warm stage III corresponds most probably to MIS 9a, warm stage II could correspond to MIS 9c, warm stage I corresponds to MIS 9e. The alternative A (warm stage I corresponds to MIS 11) is supported by the exclusive presence of evolutionary older forms of P. fossilis. If the alternative A is valid than very warm MIS 9e is absent. The alternative B (warm stage I corresponds to MIS 9e and all discussed warm stages agree with MIS 9) is supported by palynological record. The presence of Pterocarya is considered to be typical for Holsteinian with the last occurrences in Central Europe in MIS 9a. Against the alternative B speaks exclusive occurrence of evolutionary older lions in layers of the 2B group. Although both above mentioned alternatives are possible, the exclusive presence of evolutionary older group of lions in sediments of warm stage I support strongly alternative A. The youngest warm stage III does not exceed MIS 9a. Therefore, we consider all three warm stages in Za Hájovnou Cave as belonging to Holsteinian sensu lato.

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