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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Online Access: | https://doi.org/10.33265/polar.v40.7668 https://doaj.org/article/10f514eb6e6346b4b5774caab94b9923 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:10f514eb6e6346b4b5774caab94b9923 2023-05-15T13:25:33+02:00 The Billefjorden Fault Zone north of Spitsbergen: a major terrane boundary? Jean-Baptiste P. Koehl Lis Allaart 2021-10-01 https://doi.org/10.33265/polar.v40.7668 https://doaj.org/article/10f514eb6e6346b4b5774caab94b9923 en eng Norwegian Polar Institute 0800-0395 1751-8369 doi:10.33265/polar.v40.7668 https://doaj.org/article/10f514eb6e6346b4b5774caab94b9923 undefined Polar Research, Vol 40, Pp 1-9 (2021) fault basement terranes seismic facies svalbard tectonic geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2021 fttriple https://doi.org/10.33265/polar.v40.7668 2023-01-22T19:23:17Z 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 Unknown 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 |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
fault basement terranes seismic facies svalbard tectonic geo |
spellingShingle |
fault basement terranes seismic facies svalbard tectonic geo Jean-Baptiste P. Koehl Lis Allaart The Billefjorden Fault Zone north of Spitsbergen: a major terrane boundary? |
topic_facet |
fault basement terranes seismic facies svalbard tectonic geo |
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 |
Jean-Baptiste P. Koehl Lis Allaart |
author_facet |
Jean-Baptiste P. Koehl Lis Allaart |
author_sort |
Jean-Baptiste P. Koehl |
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://doi.org/10.33265/polar.v40.7668 https://doaj.org/article/10f514eb6e6346b4b5774caab94b9923 |
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, Pp 1-9 (2021) |
op_relation |
0800-0395 1751-8369 doi:10.33265/polar.v40.7668 https://doaj.org/article/10f514eb6e6346b4b5774caab94b9923 |
op_rights |
undefined |
op_doi |
https://doi.org/10.33265/polar.v40.7668 |
container_title |
Polar Research |
container_volume |
40 |
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1766385989060657152 |