Paleomagnetism of basic intrusions from the Brock Inlier, Northwest Territories, Canada
Basic intrusions of the Brock Inlier of the Northwest Territories are shown by means of paleomagnetism to be related to the Franklin diabases (specifically the Coronation suite) of the Canadian Shield, thus verifying previous correlations made through geological considerations and radiometric dating...
Published in: | Canadian Journal of Earth Sciences |
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Language: | English |
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Canadian Science Publishing
1981
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Online Access: | http://dx.doi.org/10.1139/e81-151 http://www.nrcresearchpress.com/doi/pdf/10.1139/e81-151 |
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crcansciencepubl:10.1139/e81-151 2024-03-03T08:47:32+00:00 Paleomagnetism of basic intrusions from the Brock Inlier, Northwest Territories, Canada Park, J. K. 1981 http://dx.doi.org/10.1139/e81-151 http://www.nrcresearchpress.com/doi/pdf/10.1139/e81-151 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 18, issue 10, page 1637-1641 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1981 crcansciencepubl https://doi.org/10.1139/e81-151 2024-02-07T10:53:31Z Basic intrusions of the Brock Inlier of the Northwest Territories are shown by means of paleomagnetism to be related to the Franklin diabases (specifically the Coronation suite) of the Canadian Shield, thus verifying previous correlations made through geological considerations and radiometric dating. A predominantly reverse (A R ) and occasionally normal (A N ), presumably magnetite, magnetic component were resolved in single specimens from five separate sills (five sites) using alternating field and subsequent thermal treatment in conjunction with vector diagrams. A presumably hematite component antiparallel to A R was recovered at one site using converging great circles. The mean A direction is at 074°, −07° (k = 15) and the average of the site poles at 165°E, 02°S (N = 5, K = 40, A 95 = 12°), close to that of the Coronation suite. Two specimens from a single dyke site yielded a normal A N -type pole similar to that of the Franklin dykes to the east of the Coronation suite. Article in Journal/Newspaper Northwest Territories Canadian Science Publishing Northwest Territories Canada Canadian Journal of Earth Sciences 18 10 1637 1641 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Park, J. K. Paleomagnetism of basic intrusions from the Brock Inlier, Northwest Territories, Canada |
topic_facet |
General Earth and Planetary Sciences |
description |
Basic intrusions of the Brock Inlier of the Northwest Territories are shown by means of paleomagnetism to be related to the Franklin diabases (specifically the Coronation suite) of the Canadian Shield, thus verifying previous correlations made through geological considerations and radiometric dating. A predominantly reverse (A R ) and occasionally normal (A N ), presumably magnetite, magnetic component were resolved in single specimens from five separate sills (five sites) using alternating field and subsequent thermal treatment in conjunction with vector diagrams. A presumably hematite component antiparallel to A R was recovered at one site using converging great circles. The mean A direction is at 074°, −07° (k = 15) and the average of the site poles at 165°E, 02°S (N = 5, K = 40, A 95 = 12°), close to that of the Coronation suite. Two specimens from a single dyke site yielded a normal A N -type pole similar to that of the Franklin dykes to the east of the Coronation suite. |
format |
Article in Journal/Newspaper |
author |
Park, J. K. |
author_facet |
Park, J. K. |
author_sort |
Park, J. K. |
title |
Paleomagnetism of basic intrusions from the Brock Inlier, Northwest Territories, Canada |
title_short |
Paleomagnetism of basic intrusions from the Brock Inlier, Northwest Territories, Canada |
title_full |
Paleomagnetism of basic intrusions from the Brock Inlier, Northwest Territories, Canada |
title_fullStr |
Paleomagnetism of basic intrusions from the Brock Inlier, Northwest Territories, Canada |
title_full_unstemmed |
Paleomagnetism of basic intrusions from the Brock Inlier, Northwest Territories, Canada |
title_sort |
paleomagnetism of basic intrusions from the brock inlier, northwest territories, canada |
publisher |
Canadian Science Publishing |
publishDate |
1981 |
url |
http://dx.doi.org/10.1139/e81-151 http://www.nrcresearchpress.com/doi/pdf/10.1139/e81-151 |
geographic |
Northwest Territories Canada |
geographic_facet |
Northwest Territories Canada |
genre |
Northwest Territories |
genre_facet |
Northwest Territories |
op_source |
Canadian Journal of Earth Sciences volume 18, issue 10, page 1637-1641 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e81-151 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
18 |
container_issue |
10 |
container_start_page |
1637 |
op_container_end_page |
1641 |
_version_ |
1792503746763161600 |