Cambro-Ordovician strata in Ny Friesland, Spitsbergen and their palaeotectonic significance
Summary Field and petrologic investigations of Cambro-Ordovician strata in Ny Friesland, Spitsbergen reveal a stratigraphic, sedimentologic, and diagenetic history for those rocks that bear striking similarities to coeval strata in central East Greenland, northwest Scotland and western Newfoundland....
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Cambridge University Press (CUP)
1981
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Online Access: | http://dx.doi.org/10.1017/s001675680003572x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S001675680003572X |
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crcambridgeupr:10.1017/s001675680003572x 2024-03-03T08:43:59+00:00 Cambro-Ordovician strata in Ny Friesland, Spitsbergen and their palaeotectonic significance Swett, K. 1981 http://dx.doi.org/10.1017/s001675680003572x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S001675680003572X en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Geological Magazine volume 118, issue 3, page 225-250 ISSN 0016-7568 1469-5081 Geology journal-article 1981 crcambridgeupr https://doi.org/10.1017/s001675680003572x 2024-02-08T08:46:17Z Summary Field and petrologic investigations of Cambro-Ordovician strata in Ny Friesland, Spitsbergen reveal a stratigraphic, sedimentologic, and diagenetic history for those rocks that bear striking similarities to coeval strata in central East Greenland, northwest Scotland and western Newfoundland. Parallels between these presently widely separated areas include: stratigraphic sequence (including enigmatic gaps), sedimentary structures, faunal assemblages, trace fossils, geochemical anomalies, and diagenetic sequences. It seems inescapable that the Cambro-Ordovician successions in Ny Friesland, central East Greenland, northwest Scotland, and western Newfoundland were developed on a once contiguous shelf on the margin of the lapetus Ocean. A tentative sequential tectono-sedimentological facies model of the ‘North Atlantic Geosyncline’ extending in time from late Proterozoic to the opening of the Atlantic Ocean is proposed to explain the empirical data. Slow closure of the lapetus basin, simultaneously involving transgression of the ‘North American’ plate and subduction of lapetus oceanic crust beneath a Euro-Balto-Scandinavian plate, followed by collision of the two continental plates, in turn followed by reopening along the approximate collision boundary appears to explain the observed relationships. This palaeotectonic/sedimentologic model is subject to further testing. The lithostratigraphic scheme is further refined. Article in Journal/Newspaper East Greenland Greenland Newfoundland North Atlantic Ny Friesland Spitsbergen Cambridge University Press Greenland Ny Friesland ENVELOPE(16.847,16.847,79.498,79.498) Geological Magazine 118 3 225 250 |
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Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology |
spellingShingle |
Geology Swett, K. Cambro-Ordovician strata in Ny Friesland, Spitsbergen and their palaeotectonic significance |
topic_facet |
Geology |
description |
Summary Field and petrologic investigations of Cambro-Ordovician strata in Ny Friesland, Spitsbergen reveal a stratigraphic, sedimentologic, and diagenetic history for those rocks that bear striking similarities to coeval strata in central East Greenland, northwest Scotland and western Newfoundland. Parallels between these presently widely separated areas include: stratigraphic sequence (including enigmatic gaps), sedimentary structures, faunal assemblages, trace fossils, geochemical anomalies, and diagenetic sequences. It seems inescapable that the Cambro-Ordovician successions in Ny Friesland, central East Greenland, northwest Scotland, and western Newfoundland were developed on a once contiguous shelf on the margin of the lapetus Ocean. A tentative sequential tectono-sedimentological facies model of the ‘North Atlantic Geosyncline’ extending in time from late Proterozoic to the opening of the Atlantic Ocean is proposed to explain the empirical data. Slow closure of the lapetus basin, simultaneously involving transgression of the ‘North American’ plate and subduction of lapetus oceanic crust beneath a Euro-Balto-Scandinavian plate, followed by collision of the two continental plates, in turn followed by reopening along the approximate collision boundary appears to explain the observed relationships. This palaeotectonic/sedimentologic model is subject to further testing. The lithostratigraphic scheme is further refined. |
format |
Article in Journal/Newspaper |
author |
Swett, K. |
author_facet |
Swett, K. |
author_sort |
Swett, K. |
title |
Cambro-Ordovician strata in Ny Friesland, Spitsbergen and their palaeotectonic significance |
title_short |
Cambro-Ordovician strata in Ny Friesland, Spitsbergen and their palaeotectonic significance |
title_full |
Cambro-Ordovician strata in Ny Friesland, Spitsbergen and their palaeotectonic significance |
title_fullStr |
Cambro-Ordovician strata in Ny Friesland, Spitsbergen and their palaeotectonic significance |
title_full_unstemmed |
Cambro-Ordovician strata in Ny Friesland, Spitsbergen and their palaeotectonic significance |
title_sort |
cambro-ordovician strata in ny friesland, spitsbergen and their palaeotectonic significance |
publisher |
Cambridge University Press (CUP) |
publishDate |
1981 |
url |
http://dx.doi.org/10.1017/s001675680003572x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S001675680003572X |
long_lat |
ENVELOPE(16.847,16.847,79.498,79.498) |
geographic |
Greenland Ny Friesland |
geographic_facet |
Greenland Ny Friesland |
genre |
East Greenland Greenland Newfoundland North Atlantic Ny Friesland Spitsbergen |
genre_facet |
East Greenland Greenland Newfoundland North Atlantic Ny Friesland Spitsbergen |
op_source |
Geological Magazine volume 118, issue 3, page 225-250 ISSN 0016-7568 1469-5081 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s001675680003572x |
container_title |
Geological Magazine |
container_volume |
118 |
container_issue |
3 |
container_start_page |
225 |
op_container_end_page |
250 |
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1792499466627973120 |