The structure of the Berzeliustinden area: evidence for thrust wedge tectonics in the Tertiary fold-and-thrust belt of Spitsbergen
The Berzeliustinden area forms part of the Tertiary fold-and-thrust belt of western Spitsbergen. The relations of a basement-involved thrust fault, decollement structures, and a fault repeating part of the stratigraphy are investigated. The deforming mechanism is thought to be‘wedging’of a basement-...
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Language: | English |
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Norwegian Polar Institute
1988
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Online Access: | https://polarresearch.net/index.php/polar/article/view/2428 https://doi.org/10.3402/polar.v6i2.6856 |
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ftjpolarres:oai:journals.openacademia.net:article/2428 2023-05-15T18:02:40+02:00 The structure of the Berzeliustinden area: evidence for thrust wedge tectonics in the Tertiary fold-and-thrust belt of Spitsbergen Dallmann, Winfried K. 1988-01-12 application/pdf https://polarresearch.net/index.php/polar/article/view/2428 https://doi.org/10.3402/polar.v6i2.6856 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/2428/5678 https://polarresearch.net/index.php/polar/article/view/2428 doi:10.3402/polar.v6i2.6856 Copyright (c) 2018 Polar Research Polar Research; Vol. 6 No. 2 (1988); 141-154 1751-8369 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1988 ftjpolarres https://doi.org/10.3402/polar.v6i2.6856 2021-11-11T19:12:43Z The Berzeliustinden area forms part of the Tertiary fold-and-thrust belt of western Spitsbergen. The relations of a basement-involved thrust fault, decollement structures, and a fault repeating part of the stratigraphy are investigated. The deforming mechanism is thought to be‘wedging’of a basement-involved thrust block into bituminous shaly beds of the overlying strata. The thrust fault thus does not continuously cut through to the surface, but lifts the overlying strata, forming a backward directed bedding-parallel thrust fault on top of the wedge. The presence of two bituminous shale formations, both potential splitting mediums for the wedge, complicates the structures. Many structural observations from adjacent areas of the fold-and-thrust belt also fit with this model. It is suggested that thrust wedges are common tectonic elements in the belt and might also be present further east beneath the relatively undeformed Tertiary strata of central Spitsbergen. Article in Journal/Newspaper Polar Research Spitsbergen Polar Research (E-Journal) Berzeliustinden ENVELOPE(15.058,15.058,77.510,77.510) Polar Research 6 2 141 154 |
institution |
Open Polar |
collection |
Polar Research (E-Journal) |
op_collection_id |
ftjpolarres |
language |
English |
description |
The Berzeliustinden area forms part of the Tertiary fold-and-thrust belt of western Spitsbergen. The relations of a basement-involved thrust fault, decollement structures, and a fault repeating part of the stratigraphy are investigated. The deforming mechanism is thought to be‘wedging’of a basement-involved thrust block into bituminous shaly beds of the overlying strata. The thrust fault thus does not continuously cut through to the surface, but lifts the overlying strata, forming a backward directed bedding-parallel thrust fault on top of the wedge. The presence of two bituminous shale formations, both potential splitting mediums for the wedge, complicates the structures. Many structural observations from adjacent areas of the fold-and-thrust belt also fit with this model. It is suggested that thrust wedges are common tectonic elements in the belt and might also be present further east beneath the relatively undeformed Tertiary strata of central Spitsbergen. |
format |
Article in Journal/Newspaper |
author |
Dallmann, Winfried K. |
spellingShingle |
Dallmann, Winfried K. The structure of the Berzeliustinden area: evidence for thrust wedge tectonics in the Tertiary fold-and-thrust belt of Spitsbergen |
author_facet |
Dallmann, Winfried K. |
author_sort |
Dallmann, Winfried K. |
title |
The structure of the Berzeliustinden area: evidence for thrust wedge tectonics in the Tertiary fold-and-thrust belt of Spitsbergen |
title_short |
The structure of the Berzeliustinden area: evidence for thrust wedge tectonics in the Tertiary fold-and-thrust belt of Spitsbergen |
title_full |
The structure of the Berzeliustinden area: evidence for thrust wedge tectonics in the Tertiary fold-and-thrust belt of Spitsbergen |
title_fullStr |
The structure of the Berzeliustinden area: evidence for thrust wedge tectonics in the Tertiary fold-and-thrust belt of Spitsbergen |
title_full_unstemmed |
The structure of the Berzeliustinden area: evidence for thrust wedge tectonics in the Tertiary fold-and-thrust belt of Spitsbergen |
title_sort |
structure of the berzeliustinden area: evidence for thrust wedge tectonics in the tertiary fold-and-thrust belt of spitsbergen |
publisher |
Norwegian Polar Institute |
publishDate |
1988 |
url |
https://polarresearch.net/index.php/polar/article/view/2428 https://doi.org/10.3402/polar.v6i2.6856 |
long_lat |
ENVELOPE(15.058,15.058,77.510,77.510) |
geographic |
Berzeliustinden |
geographic_facet |
Berzeliustinden |
genre |
Polar Research Spitsbergen |
genre_facet |
Polar Research Spitsbergen |
op_source |
Polar Research; Vol. 6 No. 2 (1988); 141-154 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/2428/5678 https://polarresearch.net/index.php/polar/article/view/2428 doi:10.3402/polar.v6i2.6856 |
op_rights |
Copyright (c) 2018 Polar Research |
op_doi |
https://doi.org/10.3402/polar.v6i2.6856 |
container_title |
Polar Research |
container_volume |
6 |
container_issue |
2 |
container_start_page |
141 |
op_container_end_page |
154 |
_version_ |
1766173103570812928 |