The Ny Friesland Orogen, Spitsbergen
Abstract The Caledonides of Ny Friesland comprise the type Hecla Hoek sequence of Svalbard, a succession of late Proterozoic to Ordovician strata greater than 18 km thick. Three supergroups constitute the sequence: the Stubendorffbreen Supergroup (Riphean), the Lomfjorden Supergroup (late Riphean-St...
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Cambridge University Press (CUP)
1992
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Online Access: | http://dx.doi.org/10.1017/s0016756800008438 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756800008438 |
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crcambridgeupr:10.1017/s0016756800008438 2024-10-13T14:09:55+00:00 The Ny Friesland Orogen, Spitsbergen Harland, W. B. Scott, R. A. Auckland, K. A. Snape, I. 1992 http://dx.doi.org/10.1017/s0016756800008438 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756800008438 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Geological Magazine volume 129, issue 6, page 679-707 ISSN 0016-7568 1469-5081 journal-article 1992 crcambridgeupr https://doi.org/10.1017/s0016756800008438 2024-09-18T04:04:08Z Abstract The Caledonides of Ny Friesland comprise the type Hecla Hoek sequence of Svalbard, a succession of late Proterozoic to Ordovician strata greater than 18 km thick. Three supergroups constitute the sequence: the Stubendorffbreen Supergroup (Riphean), the Lomfjorden Supergroup (late Riphean-Sturtian) and the Hinlopenstretet Supergroup (Varanger-mid-Ordovician). Basement elements have recently been identified within the Stubendorffbreen Supergroup, but their extent and significance is yet to be established. The Stubendorffbreen Supergroup records the deposition of sediments and volcanics (both acid and basic) in an unstable marine environment. In contrast, the Lomfjorden and Hinlopenstretet supergroups record sedimentation in a shallow-marine, periodically emergent, stable environment without volcanism. The Ny Friesland Orogen is divided into two subterranes by the Veteranen Line, a zone of attenuation along which sinistral strike-slip displacement has occurred. This line separates the strongly deformed Stubendorffbreen Supergroup rocks in the west from the less-intensely deformed Lomfjorden and Hinlopenstretet supergroup rocks in the east. Despite these contrasts and the obvious displacement, there is no evidence that a significant stratigraphie break occurs across it. All the supergroups were deformed and metamorphosed during the late Ordovician-Silurian Ny Friesland Orogeny. Early compressional deformation produced isoclinal folding and nappes in the Stubendorffbreen Supergroup rocks, accompanied by amphibolite faciès metamorphism; deformation in the Lomfjorden and Hinlopenstretet supergroups was less intense with open, upright folds and greenschist or subgreenschist facies metamorphism. Early compression was followed by a Silurian transpressive deformation that generated a pervasive lineation in the Stubendorffbreen Supergroup rocks. Transpressive deformation and the associated sinistral strike-slip was focused where strata were in a near-vertical attitude conducive to displacement. At a late stage in ... Article in Journal/Newspaper Ny Friesland Svalbard Varanger Spitsbergen Cambridge University Press Hinlopenstretet ENVELOPE(20.728,20.728,79.246,79.246) Hoek ENVELOPE(-65.050,-65.050,-66.000,-66.000) Lomfjorden ENVELOPE(17.918,17.918,79.514,79.514) Ny Friesland ENVELOPE(16.847,16.847,79.498,79.498) Stubendorffbreen ENVELOPE(16.697,16.697,78.962,78.962) Svalbard Veteranen ENVELOPE(17.270,17.270,79.343,79.343) Geological Magazine 129 6 679 707 |
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Open Polar |
collection |
Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract The Caledonides of Ny Friesland comprise the type Hecla Hoek sequence of Svalbard, a succession of late Proterozoic to Ordovician strata greater than 18 km thick. Three supergroups constitute the sequence: the Stubendorffbreen Supergroup (Riphean), the Lomfjorden Supergroup (late Riphean-Sturtian) and the Hinlopenstretet Supergroup (Varanger-mid-Ordovician). Basement elements have recently been identified within the Stubendorffbreen Supergroup, but their extent and significance is yet to be established. The Stubendorffbreen Supergroup records the deposition of sediments and volcanics (both acid and basic) in an unstable marine environment. In contrast, the Lomfjorden and Hinlopenstretet supergroups record sedimentation in a shallow-marine, periodically emergent, stable environment without volcanism. The Ny Friesland Orogen is divided into two subterranes by the Veteranen Line, a zone of attenuation along which sinistral strike-slip displacement has occurred. This line separates the strongly deformed Stubendorffbreen Supergroup rocks in the west from the less-intensely deformed Lomfjorden and Hinlopenstretet supergroup rocks in the east. Despite these contrasts and the obvious displacement, there is no evidence that a significant stratigraphie break occurs across it. All the supergroups were deformed and metamorphosed during the late Ordovician-Silurian Ny Friesland Orogeny. Early compressional deformation produced isoclinal folding and nappes in the Stubendorffbreen Supergroup rocks, accompanied by amphibolite faciès metamorphism; deformation in the Lomfjorden and Hinlopenstretet supergroups was less intense with open, upright folds and greenschist or subgreenschist facies metamorphism. Early compression was followed by a Silurian transpressive deformation that generated a pervasive lineation in the Stubendorffbreen Supergroup rocks. Transpressive deformation and the associated sinistral strike-slip was focused where strata were in a near-vertical attitude conducive to displacement. At a late stage in ... |
format |
Article in Journal/Newspaper |
author |
Harland, W. B. Scott, R. A. Auckland, K. A. Snape, I. |
spellingShingle |
Harland, W. B. Scott, R. A. Auckland, K. A. Snape, I. The Ny Friesland Orogen, Spitsbergen |
author_facet |
Harland, W. B. Scott, R. A. Auckland, K. A. Snape, I. |
author_sort |
Harland, W. B. |
title |
The Ny Friesland Orogen, Spitsbergen |
title_short |
The Ny Friesland Orogen, Spitsbergen |
title_full |
The Ny Friesland Orogen, Spitsbergen |
title_fullStr |
The Ny Friesland Orogen, Spitsbergen |
title_full_unstemmed |
The Ny Friesland Orogen, Spitsbergen |
title_sort |
ny friesland orogen, spitsbergen |
publisher |
Cambridge University Press (CUP) |
publishDate |
1992 |
url |
http://dx.doi.org/10.1017/s0016756800008438 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756800008438 |
long_lat |
ENVELOPE(20.728,20.728,79.246,79.246) ENVELOPE(-65.050,-65.050,-66.000,-66.000) ENVELOPE(17.918,17.918,79.514,79.514) ENVELOPE(16.847,16.847,79.498,79.498) ENVELOPE(16.697,16.697,78.962,78.962) ENVELOPE(17.270,17.270,79.343,79.343) |
geographic |
Hinlopenstretet Hoek Lomfjorden Ny Friesland Stubendorffbreen Svalbard Veteranen |
geographic_facet |
Hinlopenstretet Hoek Lomfjorden Ny Friesland Stubendorffbreen Svalbard Veteranen |
genre |
Ny Friesland Svalbard Varanger Spitsbergen |
genre_facet |
Ny Friesland Svalbard Varanger Spitsbergen |
op_source |
Geological Magazine volume 129, issue 6, page 679-707 ISSN 0016-7568 1469-5081 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0016756800008438 |
container_title |
Geological Magazine |
container_volume |
129 |
container_issue |
6 |
container_start_page |
679 |
op_container_end_page |
707 |
_version_ |
1812817010231345152 |