Cambrian-Ordovician trace fossils of the Basissletta region, northeast Spitsbergen, Svalbard

Uchman, Alfred; Hanken, Nils-Martin

doi:10.24425/agp.2024.150014

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Tytuł artykułu

Cambrian-Ordovician trace fossils of the Basissletta region, northeast Spitsbergen, Svalbard

Autorzy

Uchman Alfred , Hanken Nils-Martin

Treść / Zawartość

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DOI

10.24425/agp.2024.150014

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Abstrakty

Trace fossils of the Cambrian–Ordovician sedimentary succession of the Basissletta region, northeast Spitsbergen, Svalbard, belong to three ichnoassemblages. The first one, composed of Monocraterion and Diplocraterion, belongs to the Skolithos ichnofacies and characterises sandstones of the Tokammane Formation (lower Cambrian: Terreneuvian) deposited in a shallow subtidal setting. The overlying carbonates with pseudomorphs after evaporites (uppermost part of Terreneuvian and the Cambrian Series 2) display abundant Balanoglossites. These beds were deposited in an oxygenated but hypersaline environment. The younger Ordovician carbonates of the Kirtonryggen Formation and the mixed carbonate-clastic deposits of the Valhallfonna Formation display a more diverse but poorly preserved trace fossil suite (Phycodes, Curvolithus, Planolites, Palaeophycus) typical of the archetypal Cruziana ichnofacies. Some parts of the succession are not bioturbated, and these are characterised by dark coloured fine-grained sediments with primary lamination. They were mostly deposited between the normal and storm wave base or below the storm wave base in oxic to anoxic environments.

Słowa kluczowe

Ichnology Ichnotaxonomy Ichnofacies Svalbard Lower Palaeozoic

Ichnologia Ichnotaksonomia Ichnofacje Svalbard Dolny paleozoik

Wydawca

Faculty of Geology of the University of Warsaw
Komitet Nauk Geologicznych PAN

Czasopismo

Acta Geologica Polonica

Rocznik

2024

Tom

Vol. 74, no. 4

Strony

art. no. e29

Opis fizyczny

Bibliogr. 100 poz., rys.

Twórcy

autor

Uchman Alfred

alfred.uchman@uj.edu.pl

Institute of Geological Sciences, Jagiellonian University

autor

Hanken Nils-Martin

n.m.hanken@geo.uio.no

Department of Geology, UiT The Arctic University of Norway
Department of Geosciences, University of Oslo

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2026).

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Bibliografia

Identyfikator YADDA

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