A Mid-Mesozoic Breccia from the Coast of Labrador
A unique occurrence of Mesozoic breccia cut by lamprophyric-carbonatite dikelets, near Makkovik, Labrador is interpreted to relate to the opening of the Labrador Sea. The breccia has been dated by nannofossils; vitrinite reflectance studies show that some time during or after deposition the rock was...
Published in: | Canadian Journal of Earth Sciences |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Canadian Science Publishing
1975
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Online Access: | http://dx.doi.org/10.1139/e75-005 http://www.nrcresearchpress.com/doi/pdf/10.1139/e75-005 |
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crcansciencepubl:10.1139/e75-005 2024-09-15T18:09:30+00:00 A Mid-Mesozoic Breccia from the Coast of Labrador King, A. F. McMillan, N. J. 1975 http://dx.doi.org/10.1139/e75-005 http://www.nrcresearchpress.com/doi/pdf/10.1139/e75-005 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 12, issue 1, page 44-51 ISSN 0008-4077 1480-3313 journal-article 1975 crcansciencepubl https://doi.org/10.1139/e75-005 2024-07-25T04:10:05Z A unique occurrence of Mesozoic breccia cut by lamprophyric-carbonatite dikelets, near Makkovik, Labrador is interpreted to relate to the opening of the Labrador Sea. The breccia has been dated by nannofossils; vitrinite reflectance studies show that some time during or after deposition the rock was heated to at least 170 °C. It is suggested that shallow seas extended westward beyond the present Labrador Marginal Trough during early Jurassic time and that the period of late alkaline igneous activity is related to the rifting between Greenland and Labrador that commenced about the middle of the Mesozoic Era. Article in Journal/Newspaper Greenland Labrador Sea Makkovik Canadian Science Publishing Canadian Journal of Earth Sciences 12 1 44 51 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
A unique occurrence of Mesozoic breccia cut by lamprophyric-carbonatite dikelets, near Makkovik, Labrador is interpreted to relate to the opening of the Labrador Sea. The breccia has been dated by nannofossils; vitrinite reflectance studies show that some time during or after deposition the rock was heated to at least 170 °C. It is suggested that shallow seas extended westward beyond the present Labrador Marginal Trough during early Jurassic time and that the period of late alkaline igneous activity is related to the rifting between Greenland and Labrador that commenced about the middle of the Mesozoic Era. |
format |
Article in Journal/Newspaper |
author |
King, A. F. McMillan, N. J. |
spellingShingle |
King, A. F. McMillan, N. J. A Mid-Mesozoic Breccia from the Coast of Labrador |
author_facet |
King, A. F. McMillan, N. J. |
author_sort |
King, A. F. |
title |
A Mid-Mesozoic Breccia from the Coast of Labrador |
title_short |
A Mid-Mesozoic Breccia from the Coast of Labrador |
title_full |
A Mid-Mesozoic Breccia from the Coast of Labrador |
title_fullStr |
A Mid-Mesozoic Breccia from the Coast of Labrador |
title_full_unstemmed |
A Mid-Mesozoic Breccia from the Coast of Labrador |
title_sort |
mid-mesozoic breccia from the coast of labrador |
publisher |
Canadian Science Publishing |
publishDate |
1975 |
url |
http://dx.doi.org/10.1139/e75-005 http://www.nrcresearchpress.com/doi/pdf/10.1139/e75-005 |
genre |
Greenland Labrador Sea Makkovik |
genre_facet |
Greenland Labrador Sea Makkovik |
op_source |
Canadian Journal of Earth Sciences volume 12, issue 1, page 44-51 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e75-005 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
12 |
container_issue |
1 |
container_start_page |
44 |
op_container_end_page |
51 |
_version_ |
1810447072381370368 |