Journal : Acta Geologica Polonica
Article : Faunal dynamics of bivalves and scaphopods in the Bathonian (Middle Jurassic) ore-bearing clays at Gnaszyn, Kraków-Silesia Homocline, Poland

Authors :
Gedl, P.
Institute of Geological Sciences, Polish Academy of Sciences, Senacka 1, 31-002 Kraków, Poland, ndgedl@cyf-kr.edu.pl,
Leonowicz, P.
Institute of Geology, University of Warsaw, Al. Żwirki i Wigury 93, PL-02-089 Warszawa, Poland, Paulina.Leonowicz@uw.edu.pl,
Dudek, T.
Institute of Geological Sciences, Polish Academy of Sciences, Senacka 1, PL-31-002 Kraków, Poland, tereska_wing@yahoo.co.uk,
Witkowska, M.
Institute of Geological Sciences, Jagiellonian University, Oleandry 2a, PL-30-063 Kraków, Poland, magda.witkowsky@interia.pl,
Gedl, P.
Institute of Geological Sciences, Polish Academy of Sciences, Senacka 1, 31-002 Kraków, Poland, ndgedl@cyf-kr.edu.pl,
Boczarowski, A.
Faculty of Earth Sciences, University of Silesia, Będzińska 60, PL-41-200 Sosnowiec, Poland, a.boczarowski@chello.pl,
Kaim, A.
Institute of Paleobiology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warszawa, Poland ; Bayerische Staatssammlung fur Palaontologie und Geologie, Richard-Wagner-Str. 10, 80333 Munchen, Germany, kaim@twarda.pan.pl,
Kaim, A.
Institute of Paleobiology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warszawa, Poland ; Bayerische Staatssammlung fur Palaontologie und Geologie, Richard-Wagner-Str. 10, 80333 Munchen, Germany, kaim@twarda.pan.pl,
Abstract : The environment at the Gnaszyn section – as deduced from bivalve and scaphopod dynamics – was controlled by the substrate consistency and possibly oxygen deficiency near the sediment-water interface and/or oxygen content fluctuations. The middle part of the section dominated by nuculoid and corbulid bivalves and Laevidentalium-type scaphopods probably reflects a soupy substrate and possibly oxygen deficiency in the sediment. Slightly coarser and better-oxygenated silts in the upper and lower parts of the section offered a less soupy substrate consistency, allowing the development of communities dominated by astartids, byssate bivalves, and Dentalium- and Plagioglypta-type scaphopods.

Keywords : Baton, Gnaszyn, iły rudonośne, jura, łódkonogi, małże, paleoekologia, Polska, ślimaki, Bathonian, Bivalves, Gastropods, Gnaszyn, Jurassic, Ore-bearing clays, Palaeoecology, Poland, Scaphopods,
Publishing house : Faculty of Geology of the University of Warsaw
Publication date : 2012
Number : Vol. 62, no. 3
Page : 381 – 395

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DOI :
Qute : Gedl, P. ,Leonowicz, P. ,Dudek, T. ,Witkowska, M. ,Gedl, P. ,Boczarowski, A. ,Kaim, A. ,Kaim, A. ,Kaim, A. , Faunal dynamics of bivalves and scaphopods in the Bathonian (Middle Jurassic) ore-bearing clays at Gnaszyn, Kraków-Silesia Homocline, Poland. Acta Geologica Polonica Vol. 62, no. 3/2012
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