Trace fossils from the Lower Jurassic Ciechocinek Formation, SW Poland
Journal Title: Volumina Jurassica - Year 2008, Vol 6, Issue 1
Abstract
Mud-silt deposits of the Lower Jurassic Ciechocinek Formation from the Częstochowa-Wieluń region arecharacterized by a low diversity ichnofossil association, which includes the ichnogenera [i]Planolites[/i], [i]Palaeophycus[/i], [i]Helminthopsis[/i], [i]Gyrochorte[/i], [i]Protovirgularia [/i]and [i]Spongeliomorpha [/i]as well as some unidentified pascichnia. This association points to deposition in a low-energy brackish environment with poorly oxygenated sediments. Changes of seafloor oxygenation, influenced by periodical bottom currents, resulted in various bioturbation intensities, which range from none to high.
Authors and Affiliations
Paulina LEONOWICZ
Keywords
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