The post-Devonian tectonic evolution of southern Spitsbergen illustrated by structural cross-sections through Bellsund and Hornsund
Abstract Construction of cross-sections in Bellsund and Hornsund, southern Spitsbergen, using offshore and onshore structural data illustrate the main tectonic units of the region. From west to east these are: a wedge of late Cenozoic clastic sediments; a series of late Palaeozoic to early Mesozoic...
Published in: | Geological Magazine |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Cambridge University Press (CUP)
1989
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Online Access: | http://dx.doi.org/10.1017/s0016756800022846 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756800022846 |
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crcambridgeupr:10.1017/s0016756800022846 2024-06-23T07:51:41+00:00 The post-Devonian tectonic evolution of southern Spitsbergen illustrated by structural cross-sections through Bellsund and Hornsund Mann, A. Townsend, C. 1989 http://dx.doi.org/10.1017/s0016756800022846 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756800022846 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Geological Magazine volume 126, issue 5, page 549-566 ISSN 0016-7568 1469-5081 journal-article 1989 crcambridgeupr https://doi.org/10.1017/s0016756800022846 2024-05-29T08:08:34Z Abstract Construction of cross-sections in Bellsund and Hornsund, southern Spitsbergen, using offshore and onshore structural data illustrate the main tectonic units of the region. From west to east these are: a wedge of late Cenozoic clastic sediments; a series of late Palaeozoic to early Mesozoic grabens controlled by basement faults along the west Spitsbergen margin; the Basement Horst, comprising late Precambrian to early Palaeozoic rocks deformed and metamorphosed during a mid-Palaeozoic orogeny; the Fold Belt, which forms a narrow NNW–SSE striking zone of eastward verging folds and thrusts attributed to Eocene inversion of a pre-Cenozoic basin; the Palaeogene Central Basin, deformed into a broad synclinorium and bound to the east by the Billefjorden Fault Zone. This basement lineament shows evidence of Palaeogene reactivation and may be linked to the Fold Belt by a detachment zone beneath the Central Basin. East of Spitsbergen, there is an offshore basin of possible Carboniferous age controlled by the Storfjorden Fault Zone which shows evidence of later inversion to form a positive flower structure. Article in Journal/Newspaper Bellsund Billefjorden Hornsund Spitsbergen Cambridge University Press Bellsund ENVELOPE(14.226,14.226,77.662,77.662) Billefjorden ENVELOPE(16.417,16.417,78.563,78.563) Hornsund ENVELOPE(15.865,15.865,76.979,76.979) Geological Magazine 126 5 549 566 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract Construction of cross-sections in Bellsund and Hornsund, southern Spitsbergen, using offshore and onshore structural data illustrate the main tectonic units of the region. From west to east these are: a wedge of late Cenozoic clastic sediments; a series of late Palaeozoic to early Mesozoic grabens controlled by basement faults along the west Spitsbergen margin; the Basement Horst, comprising late Precambrian to early Palaeozoic rocks deformed and metamorphosed during a mid-Palaeozoic orogeny; the Fold Belt, which forms a narrow NNW–SSE striking zone of eastward verging folds and thrusts attributed to Eocene inversion of a pre-Cenozoic basin; the Palaeogene Central Basin, deformed into a broad synclinorium and bound to the east by the Billefjorden Fault Zone. This basement lineament shows evidence of Palaeogene reactivation and may be linked to the Fold Belt by a detachment zone beneath the Central Basin. East of Spitsbergen, there is an offshore basin of possible Carboniferous age controlled by the Storfjorden Fault Zone which shows evidence of later inversion to form a positive flower structure. |
format |
Article in Journal/Newspaper |
author |
Mann, A. Townsend, C. |
spellingShingle |
Mann, A. Townsend, C. The post-Devonian tectonic evolution of southern Spitsbergen illustrated by structural cross-sections through Bellsund and Hornsund |
author_facet |
Mann, A. Townsend, C. |
author_sort |
Mann, A. |
title |
The post-Devonian tectonic evolution of southern Spitsbergen illustrated by structural cross-sections through Bellsund and Hornsund |
title_short |
The post-Devonian tectonic evolution of southern Spitsbergen illustrated by structural cross-sections through Bellsund and Hornsund |
title_full |
The post-Devonian tectonic evolution of southern Spitsbergen illustrated by structural cross-sections through Bellsund and Hornsund |
title_fullStr |
The post-Devonian tectonic evolution of southern Spitsbergen illustrated by structural cross-sections through Bellsund and Hornsund |
title_full_unstemmed |
The post-Devonian tectonic evolution of southern Spitsbergen illustrated by structural cross-sections through Bellsund and Hornsund |
title_sort |
post-devonian tectonic evolution of southern spitsbergen illustrated by structural cross-sections through bellsund and hornsund |
publisher |
Cambridge University Press (CUP) |
publishDate |
1989 |
url |
http://dx.doi.org/10.1017/s0016756800022846 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756800022846 |
long_lat |
ENVELOPE(14.226,14.226,77.662,77.662) ENVELOPE(16.417,16.417,78.563,78.563) ENVELOPE(15.865,15.865,76.979,76.979) |
geographic |
Bellsund Billefjorden Hornsund |
geographic_facet |
Bellsund Billefjorden Hornsund |
genre |
Bellsund Billefjorden Hornsund Spitsbergen |
genre_facet |
Bellsund Billefjorden Hornsund Spitsbergen |
op_source |
Geological Magazine volume 126, issue 5, page 549-566 ISSN 0016-7568 1469-5081 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0016756800022846 |
container_title |
Geological Magazine |
container_volume |
126 |
container_issue |
5 |
container_start_page |
549 |
op_container_end_page |
566 |
_version_ |
1802642803188039680 |