The Billefjorden Fault Zone north of Spitsbergen: a major terrane boundary?
The Billefjorden Fault Zone is a major terrane boundary in the Norwegian Arctic. The fault separates basement rocks of Svalbard’s north-eastern and north-western terranes that recorded discrete Precambrian tectonothermal histories and were accreted, intensely deformed and metamorphosed during the Ca...
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Norwegian Polar Institute
2021
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ftjpolarres:oai:journals.openacademia.net:article/7668 2023-05-15T13:25:33+02:00 The Billefjorden Fault Zone north of Spitsbergen: a major terrane boundary? Koehl, Jean-Baptiste Allaart, Lis 2021-10-13 text/html application/pdf application/epub+zip text/xml https://polarresearch.net/index.php/polar/article/view/7668 https://doi.org/10.33265/polar.v40.7668 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/7668/13954 https://polarresearch.net/index.php/polar/article/view/7668/13957 https://polarresearch.net/index.php/polar/article/view/7668/13958 https://polarresearch.net/index.php/polar/article/view/7668/13956 https://polarresearch.net/index.php/polar/article/view/7668/13875 https://polarresearch.net/index.php/polar/article/view/7668 doi:10.33265/polar.v40.7668 Copyright (c) 2021 Jean-Baptiste Koehl, Lis Allaart https://creativecommons.org/licenses/by-nd/4.0 CC-BY-ND Polar Research; Vol. 40 (2021) 1751-8369 Fault basement terranes seismic facies Svalbard tectonic info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2021 ftjpolarres https://doi.org/10.33265/polar.v40.7668 2021-11-11T19:14:21Z The Billefjorden Fault Zone is a major terrane boundary in the Norwegian Arctic. The fault separates basement rocks of Svalbard’s north-eastern and north-western terranes that recorded discrete Precambrian tectonothermal histories and were accreted, intensely deformed and metamorphosed during the Caledonian Orogeny. Although the fault represents a major, crustal-scale tectonic boundary, its northward extent is not well constrained. The present short contribution addresses this issue and presents new seismic mapping of structures and rock units north of Wijdefjorden, where the Billefjorden Fault Zone may continue. This study shows that there is no evidence for major faulting of the top-basement reflection, and therefore, that the Billefjorden Fault Zone may die out within Wijdefjorden–Austfjorden, step ≥ 20 km laterally, or be invisible on the presented seismic data. Seismic data also suggest that Caledonian basement rocks in Ny-Friesland (north-eastern terrane) are not significantly different from basement rocks below the Devonian Graben in Andrée Land (north-western terrane). Potential implications include the absence of a major terrane boundary in northern Spitsbergen. Article in Journal/Newspaper Andrée-Land Arctic Austfjord* Billefjorden Ny Friesland Polar Research Svalbard Wijdefjord* Spitsbergen Polar Research (E-Journal) Arctic Svalbard Billefjorden ENVELOPE(16.417,16.417,78.563,78.563) Andrée ENVELOPE(-61.500,-61.500,-64.516,-64.516) Ny Friesland ENVELOPE(16.847,16.847,79.498,79.498) Wijdefjorden ENVELOPE(15.569,15.569,79.543,79.543) Austfjorden ENVELOPE(16.234,16.234,79.010,79.010) Polar Research 40 |
institution |
Open Polar |
collection |
Polar Research (E-Journal) |
op_collection_id |
ftjpolarres |
language |
English |
topic |
Fault basement terranes seismic facies Svalbard tectonic |
spellingShingle |
Fault basement terranes seismic facies Svalbard tectonic Koehl, Jean-Baptiste Allaart, Lis The Billefjorden Fault Zone north of Spitsbergen: a major terrane boundary? |
topic_facet |
Fault basement terranes seismic facies Svalbard tectonic |
description |
The Billefjorden Fault Zone is a major terrane boundary in the Norwegian Arctic. The fault separates basement rocks of Svalbard’s north-eastern and north-western terranes that recorded discrete Precambrian tectonothermal histories and were accreted, intensely deformed and metamorphosed during the Caledonian Orogeny. Although the fault represents a major, crustal-scale tectonic boundary, its northward extent is not well constrained. The present short contribution addresses this issue and presents new seismic mapping of structures and rock units north of Wijdefjorden, where the Billefjorden Fault Zone may continue. This study shows that there is no evidence for major faulting of the top-basement reflection, and therefore, that the Billefjorden Fault Zone may die out within Wijdefjorden–Austfjorden, step ≥ 20 km laterally, or be invisible on the presented seismic data. Seismic data also suggest that Caledonian basement rocks in Ny-Friesland (north-eastern terrane) are not significantly different from basement rocks below the Devonian Graben in Andrée Land (north-western terrane). Potential implications include the absence of a major terrane boundary in northern Spitsbergen. |
format |
Article in Journal/Newspaper |
author |
Koehl, Jean-Baptiste Allaart, Lis |
author_facet |
Koehl, Jean-Baptiste Allaart, Lis |
author_sort |
Koehl, Jean-Baptiste |
title |
The Billefjorden Fault Zone north of Spitsbergen: a major terrane boundary? |
title_short |
The Billefjorden Fault Zone north of Spitsbergen: a major terrane boundary? |
title_full |
The Billefjorden Fault Zone north of Spitsbergen: a major terrane boundary? |
title_fullStr |
The Billefjorden Fault Zone north of Spitsbergen: a major terrane boundary? |
title_full_unstemmed |
The Billefjorden Fault Zone north of Spitsbergen: a major terrane boundary? |
title_sort |
billefjorden fault zone north of spitsbergen: a major terrane boundary? |
publisher |
Norwegian Polar Institute |
publishDate |
2021 |
url |
https://polarresearch.net/index.php/polar/article/view/7668 https://doi.org/10.33265/polar.v40.7668 |
long_lat |
ENVELOPE(16.417,16.417,78.563,78.563) ENVELOPE(-61.500,-61.500,-64.516,-64.516) ENVELOPE(16.847,16.847,79.498,79.498) ENVELOPE(15.569,15.569,79.543,79.543) ENVELOPE(16.234,16.234,79.010,79.010) |
geographic |
Arctic Svalbard Billefjorden Andrée Ny Friesland Wijdefjorden Austfjorden |
geographic_facet |
Arctic Svalbard Billefjorden Andrée Ny Friesland Wijdefjorden Austfjorden |
genre |
Andrée-Land Arctic Austfjord* Billefjorden Ny Friesland Polar Research Svalbard Wijdefjord* Spitsbergen |
genre_facet |
Andrée-Land Arctic Austfjord* Billefjorden Ny Friesland Polar Research Svalbard Wijdefjord* Spitsbergen |
op_source |
Polar Research; Vol. 40 (2021) 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/7668/13954 https://polarresearch.net/index.php/polar/article/view/7668/13957 https://polarresearch.net/index.php/polar/article/view/7668/13958 https://polarresearch.net/index.php/polar/article/view/7668/13956 https://polarresearch.net/index.php/polar/article/view/7668/13875 https://polarresearch.net/index.php/polar/article/view/7668 doi:10.33265/polar.v40.7668 |
op_rights |
Copyright (c) 2021 Jean-Baptiste Koehl, Lis Allaart https://creativecommons.org/licenses/by-nd/4.0 |
op_rightsnorm |
CC-BY-ND |
op_doi |
https://doi.org/10.33265/polar.v40.7668 |
container_title |
Polar Research |
container_volume |
40 |
_version_ |
1766385993290612736 |