Precambrian–Palaeozoic geology of Smith Sound, Canada and Greenland: key constraint to palaeogeographic reconstructions of northern Laurentia and the North Atlantic region
Abstract Nares Strait separating Greenland and northernmost Canada is floored by continental crust. Most palaeogeographic reconstructions of Laurentia and the North Atlantic region model the seaway as the site of massive sinistral strike–slip and/or compression/transpression, subduction and collisio...
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crwiley:10.1111/j.1365-3121.2008.00845.x 2024-06-23T07:53:08+00:00 Precambrian–Palaeozoic geology of Smith Sound, Canada and Greenland: key constraint to palaeogeographic reconstructions of northern Laurentia and the North Atlantic region Dawes, Peter R. 2009 http://dx.doi.org/10.1111/j.1365-3121.2008.00845.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-3121.2008.00845.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-3121.2008.00845.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Terra Nova volume 21, issue 1, page 1-13 ISSN 0954-4879 1365-3121 journal-article 2009 crwiley https://doi.org/10.1111/j.1365-3121.2008.00845.x 2024-06-13T04:21:52Z Abstract Nares Strait separating Greenland and northernmost Canada is floored by continental crust. Most palaeogeographic reconstructions of Laurentia and the North Atlantic region model the seaway as the site of massive sinistral strike–slip and/or compression/transpression, subduction and collision, the supposed manifestations of the hypothetical Wegener Fault. However, these reconstructions fail to take into account the bedrock geology that represents within‐plate evolution. Both sides of Smith Sound, the southernmost part of Nares Strait, expose the same early Proterozoic to early Palaeozoic assemblages that are unaffected by seaway‐related tectonism or thermal activity. Smith Sound is an intact crustal block or `linchpin' demonstrating that there was no independent Greenland plate. North‐west Greenland was not a leading plate margin neither was Nares Strait the site of the plate boundary between Greenland and North America. The Wegener Fault does not exist. The Smith Sound linchpin constitutes a key constraint that must be respected in any palaeogeographic reconstruction of the region. Article in Journal/Newspaper Greenland Nares strait North Atlantic Smith sound Wiley Online Library Canada Greenland Nares ENVELOPE(158.167,158.167,-81.450,-81.450) Smith Sound ENVELOPE(-73.996,-73.996,78.419,78.419) Terra Nova 21 1 1 13 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Nares Strait separating Greenland and northernmost Canada is floored by continental crust. Most palaeogeographic reconstructions of Laurentia and the North Atlantic region model the seaway as the site of massive sinistral strike–slip and/or compression/transpression, subduction and collision, the supposed manifestations of the hypothetical Wegener Fault. However, these reconstructions fail to take into account the bedrock geology that represents within‐plate evolution. Both sides of Smith Sound, the southernmost part of Nares Strait, expose the same early Proterozoic to early Palaeozoic assemblages that are unaffected by seaway‐related tectonism or thermal activity. Smith Sound is an intact crustal block or `linchpin' demonstrating that there was no independent Greenland plate. North‐west Greenland was not a leading plate margin neither was Nares Strait the site of the plate boundary between Greenland and North America. The Wegener Fault does not exist. The Smith Sound linchpin constitutes a key constraint that must be respected in any palaeogeographic reconstruction of the region. |
format |
Article in Journal/Newspaper |
author |
Dawes, Peter R. |
spellingShingle |
Dawes, Peter R. Precambrian–Palaeozoic geology of Smith Sound, Canada and Greenland: key constraint to palaeogeographic reconstructions of northern Laurentia and the North Atlantic region |
author_facet |
Dawes, Peter R. |
author_sort |
Dawes, Peter R. |
title |
Precambrian–Palaeozoic geology of Smith Sound, Canada and Greenland: key constraint to palaeogeographic reconstructions of northern Laurentia and the North Atlantic region |
title_short |
Precambrian–Palaeozoic geology of Smith Sound, Canada and Greenland: key constraint to palaeogeographic reconstructions of northern Laurentia and the North Atlantic region |
title_full |
Precambrian–Palaeozoic geology of Smith Sound, Canada and Greenland: key constraint to palaeogeographic reconstructions of northern Laurentia and the North Atlantic region |
title_fullStr |
Precambrian–Palaeozoic geology of Smith Sound, Canada and Greenland: key constraint to palaeogeographic reconstructions of northern Laurentia and the North Atlantic region |
title_full_unstemmed |
Precambrian–Palaeozoic geology of Smith Sound, Canada and Greenland: key constraint to palaeogeographic reconstructions of northern Laurentia and the North Atlantic region |
title_sort |
precambrian–palaeozoic geology of smith sound, canada and greenland: key constraint to palaeogeographic reconstructions of northern laurentia and the north atlantic region |
publisher |
Wiley |
publishDate |
2009 |
url |
http://dx.doi.org/10.1111/j.1365-3121.2008.00845.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-3121.2008.00845.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-3121.2008.00845.x |
long_lat |
ENVELOPE(158.167,158.167,-81.450,-81.450) ENVELOPE(-73.996,-73.996,78.419,78.419) |
geographic |
Canada Greenland Nares Smith Sound |
geographic_facet |
Canada Greenland Nares Smith Sound |
genre |
Greenland Nares strait North Atlantic Smith sound |
genre_facet |
Greenland Nares strait North Atlantic Smith sound |
op_source |
Terra Nova volume 21, issue 1, page 1-13 ISSN 0954-4879 1365-3121 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-3121.2008.00845.x |
container_title |
Terra Nova |
container_volume |
21 |
container_issue |
1 |
container_start_page |
1 |
op_container_end_page |
13 |
_version_ |
1802644635972009984 |