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Arthropod trace fossils from Eocene cold climate continental strata of King George Island, West Antarctica

Arthropod trace fossils from Eocene cold climate ...

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dc.contributor.author Uchman, Alfred [SAP11011964] pl
dc.contributor.author Gaździcki, Andrzej pl
dc.contributor.author Błażejowski, Błażej pl
dc.date.accessioned 2018-06-22T06:56:54Z
dc.date.available 2018-06-22T06:56:54Z
dc.date.issued 2018 pl
dc.identifier.issn 0567-7920 pl
dc.identifier.uri https://ruj.uj.edu.pl/xmlui/handle/item/55139
dc.language eng pl
dc.rights Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa *
dc.rights.uri http://creativecommons.org/licenses/by/4.0/pl/legalcode *
dc.title Arthropod trace fossils from Eocene cold climate continental strata of King George Island, West Antarctica pl
dc.type JournalArticle pl
dc.description.physical 383-396 pl
dc.description.additional Bibliogr. s. 394-396 pl
dc.abstract.en Siltstone and sandstone beds of the Mount Wawel Formation (Eocene) contain trace fossils interpreted as insect resting traces and arthropod trackways, the latest determined as Glaciichnium australis isp. nov. and cf. Pterichnus isp. Glaciichnium is included in a new ichnofamily Protichnidae, which embraces invertebrate trackways composed of straight central trail(s) and lateral tracks. The same deposits contain fragments of plant stems in growth position, delicate fern-like plant twigs and leaves of Nothofagus. Their deposition took place in very shallow but flowing water, probably in a marginal part of a lake, perhaps in a delta. The presence of mudcracks proves incidental exposure of the sediment. The trace fossils were produced by arthropods, especially insects and/or isopods, between episodes of deposition and were influenced by the water flow and subtle changes in substrate consistency. This resulted in several morphological variants of the traces. Glaciichnium australis is similar to those produced by some caddisflies (Trichoptera) in shallow puddles in the Tatra Mountains of Poland. The arthropod-dominated trace fossil assemblage is similar to the Glaciichnium ichnocoenosis, which is known from some Pleistocene lacustrine varve sediments of Europe. This fits well with the beginning of climatic cooling in Antarctica during the late Eocene. This also shows the recurrence of some ichnological features on both ends of the globe in similar palaeoenvironmental conditions and supports basics of the ichnofacies concept. pl
dc.subject.en Arthropoda pl
dc.subject.en trace fossils pl
dc.subject.en taphonomy pl
dc.subject.en Antarctica pl
dc.subject.en King George Island pl
dc.subject.en Eocene pl
dc.description.volume 63 pl
dc.description.number 2 pl
dc.identifier.doi 10.4202/app.00467.2018 pl
dc.identifier.eissn 1732-2421 pl
dc.title.journal Acta Palaeontologica Polonica pl
dc.language.container eng pl
dc.affiliation Wydział Geografii i Geologii : Instytut Nauk Geologicznych pl
dc.subtype Article pl
dc.rights.original CC-BY; otwarte czasopismo; ostateczna wersja wydawcy; w momencie opublikowania; 0 pl
dc.identifier.project ROD UJ / P pl
.pointsMNiSW [2018 A]: 30

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Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa Except where otherwise noted, this item's license is described as Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa