Depositional environment, ichnological features and oxygenation of Permian to earliest Triassic marine sediments in central Spitsbergen, Svalbard
Late Early Permian–lowermost Triassic carbonate, siliceous (spiculites) and clastic marine sediments in the Marmierfjellet area (Isfjorden, central Spitsbergen) contain a relatively diverse and abundant trace fossil assemblage providing important information about the depositional processes. The Vør...
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Norwegian Polar Institute
2016
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Online Access: | https://doi.org/10.3402/polar.v35.24782 https://doaj.org/article/caa706ab48e94e20ad2665c70dd706a6 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:caa706ab48e94e20ad2665c70dd706a6 2023-05-15T16:55:56+02:00 Depositional environment, ichnological features and oxygenation of Permian to earliest Triassic marine sediments in central Spitsbergen, Svalbard Alfred Uchman Nils-Martin Hanken Jesper Kresten Nielsen Sten-Andreas Grundvåg Stefan Piasecki 2016-05-01 https://doi.org/10.3402/polar.v35.24782 https://doaj.org/article/caa706ab48e94e20ad2665c70dd706a6 en eng Norwegian Polar Institute 1751-8369 doi:10.3402/polar.v35.24782 https://doaj.org/article/caa706ab48e94e20ad2665c70dd706a6 undefined Polar Research, Vol 35, Iss 0, Pp 1-21 (2016) Trace fossils Permian–Triassic boundary palynology spiculites trace elements anoxicity geo archeo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2016 fttriple https://doi.org/10.3402/polar.v35.24782 2023-01-22T16:44:15Z Late Early Permian–lowermost Triassic carbonate, siliceous (spiculites) and clastic marine sediments in the Marmierfjellet area (Isfjorden, central Spitsbergen) contain a relatively diverse and abundant trace fossil assemblage providing important information about the depositional processes. The Vøringen Member (Late Artinskian–Kungurian) of the Kapp Starostin Formation (Late Artinskian–? Changhsingian) contains trace fossils (Nereites, Phycosiphon, Zoophycos and Arenicolites—common in tempestites) typical of the proximal–archetypal Cruziana ichnofacies, which indicates lower shoreface. Nereites, Phycosiphon and Zoophycos, accompanied by other rare trace fossils, characterize the Svenskegga and Hovtinden members of the Kapp Starostin Formation. They are interpreted as the distal Cruziana ichnofacies, possibly transitional to the Zoophycos ichnofacies typical of the lower offshore zone. However, the sporadic occurrences of Arenicolites and Macaronichnus can point to episodic shallowing to upper offshore–lower shoreface. The lowest part of the Triassic Vikinghøgda Formation (Induan–Olenekian) contains a very low-diverse ichnoassemblage composed of a few simple and branched forms ascribed to the impoverished Cruziana ichnofacies (lower to upper offshore environment), which is attributed to the early recovery stage after the Permian–Triassic extinction. The trace fossils and loss of primary sedimentary structures caused by intense bioturbation throughout most of the section point to generally oxygenated pore waters on the sea floor. However, some horizons, especially laminated black shales, display reduced or no bioturbational activity. These horizons also show high V/(V+Ni) ratios, which indicate oxygen-depleted sediments with periods of anoxic conditions. A remarkable black shale unit deposited under anoxic and sulphidic conditions occurs at the Permian–Triassic transition. Article in Journal/Newspaper Isfjord* Isfjord* Isfjorden Isfjorden Polar Research Svalbard Spitsbergen Unknown Hovtinden ENVELOPE(13.827,13.827,78.286,78.286) Kapp Starostin ENVELOPE(13.828,13.828,78.093,78.093) Marmierfjellet ENVELOPE(16.646,16.646,78.299,78.299) Svalbard Vikinghøgda ENVELOPE(23.167,23.167,-72.067,-72.067) Polar Research 35 1 24782 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
Trace fossils Permian–Triassic boundary palynology spiculites trace elements anoxicity geo archeo |
spellingShingle |
Trace fossils Permian–Triassic boundary palynology spiculites trace elements anoxicity geo archeo Alfred Uchman Nils-Martin Hanken Jesper Kresten Nielsen Sten-Andreas Grundvåg Stefan Piasecki Depositional environment, ichnological features and oxygenation of Permian to earliest Triassic marine sediments in central Spitsbergen, Svalbard |
topic_facet |
Trace fossils Permian–Triassic boundary palynology spiculites trace elements anoxicity geo archeo |
description |
Late Early Permian–lowermost Triassic carbonate, siliceous (spiculites) and clastic marine sediments in the Marmierfjellet area (Isfjorden, central Spitsbergen) contain a relatively diverse and abundant trace fossil assemblage providing important information about the depositional processes. The Vøringen Member (Late Artinskian–Kungurian) of the Kapp Starostin Formation (Late Artinskian–? Changhsingian) contains trace fossils (Nereites, Phycosiphon, Zoophycos and Arenicolites—common in tempestites) typical of the proximal–archetypal Cruziana ichnofacies, which indicates lower shoreface. Nereites, Phycosiphon and Zoophycos, accompanied by other rare trace fossils, characterize the Svenskegga and Hovtinden members of the Kapp Starostin Formation. They are interpreted as the distal Cruziana ichnofacies, possibly transitional to the Zoophycos ichnofacies typical of the lower offshore zone. However, the sporadic occurrences of Arenicolites and Macaronichnus can point to episodic shallowing to upper offshore–lower shoreface. The lowest part of the Triassic Vikinghøgda Formation (Induan–Olenekian) contains a very low-diverse ichnoassemblage composed of a few simple and branched forms ascribed to the impoverished Cruziana ichnofacies (lower to upper offshore environment), which is attributed to the early recovery stage after the Permian–Triassic extinction. The trace fossils and loss of primary sedimentary structures caused by intense bioturbation throughout most of the section point to generally oxygenated pore waters on the sea floor. However, some horizons, especially laminated black shales, display reduced or no bioturbational activity. These horizons also show high V/(V+Ni) ratios, which indicate oxygen-depleted sediments with periods of anoxic conditions. A remarkable black shale unit deposited under anoxic and sulphidic conditions occurs at the Permian–Triassic transition. |
format |
Article in Journal/Newspaper |
author |
Alfred Uchman Nils-Martin Hanken Jesper Kresten Nielsen Sten-Andreas Grundvåg Stefan Piasecki |
author_facet |
Alfred Uchman Nils-Martin Hanken Jesper Kresten Nielsen Sten-Andreas Grundvåg Stefan Piasecki |
author_sort |
Alfred Uchman |
title |
Depositional environment, ichnological features and oxygenation of Permian to earliest Triassic marine sediments in central Spitsbergen, Svalbard |
title_short |
Depositional environment, ichnological features and oxygenation of Permian to earliest Triassic marine sediments in central Spitsbergen, Svalbard |
title_full |
Depositional environment, ichnological features and oxygenation of Permian to earliest Triassic marine sediments in central Spitsbergen, Svalbard |
title_fullStr |
Depositional environment, ichnological features and oxygenation of Permian to earliest Triassic marine sediments in central Spitsbergen, Svalbard |
title_full_unstemmed |
Depositional environment, ichnological features and oxygenation of Permian to earliest Triassic marine sediments in central Spitsbergen, Svalbard |
title_sort |
depositional environment, ichnological features and oxygenation of permian to earliest triassic marine sediments in central spitsbergen, svalbard |
publisher |
Norwegian Polar Institute |
publishDate |
2016 |
url |
https://doi.org/10.3402/polar.v35.24782 https://doaj.org/article/caa706ab48e94e20ad2665c70dd706a6 |
long_lat |
ENVELOPE(13.827,13.827,78.286,78.286) ENVELOPE(13.828,13.828,78.093,78.093) ENVELOPE(16.646,16.646,78.299,78.299) ENVELOPE(23.167,23.167,-72.067,-72.067) |
geographic |
Hovtinden Kapp Starostin Marmierfjellet Svalbard Vikinghøgda |
geographic_facet |
Hovtinden Kapp Starostin Marmierfjellet Svalbard Vikinghøgda |
genre |
Isfjord* Isfjord* Isfjorden Isfjorden Polar Research Svalbard Spitsbergen |
genre_facet |
Isfjord* Isfjord* Isfjorden Isfjorden Polar Research Svalbard Spitsbergen |
op_source |
Polar Research, Vol 35, Iss 0, Pp 1-21 (2016) |
op_relation |
1751-8369 doi:10.3402/polar.v35.24782 https://doaj.org/article/caa706ab48e94e20ad2665c70dd706a6 |
op_rights |
undefined |
op_doi |
https://doi.org/10.3402/polar.v35.24782 |
container_title |
Polar Research |
container_volume |
35 |
container_issue |
1 |
container_start_page |
24782 |
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1766046978105409536 |