AEROMAGNETIC STUDY OF THE CHURCHILL–SUPERIOR BOUNDARY IN NORTHERN MANITOBA
A regional aeromagnetic study of northern Manitoba suggests adjustments in the position of the Churchill–Superior boundary. This proposed boundary is correlated to a narrow, continuous magnetic low that changes direction at its northern end, from a northeast trend to an east–west trend that approxim...
Published in: | Canadian Journal of Earth Sciences |
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Language: | English |
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Canadian Science Publishing
1966
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Online Access: | http://dx.doi.org/10.1139/e66-039 http://www.nrcresearchpress.com/doi/pdf/10.1139/e66-039 |
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crcansciencepubl:10.1139/e66-039 2023-12-17T10:28:51+01:00 AEROMAGNETIC STUDY OF THE CHURCHILL–SUPERIOR BOUNDARY IN NORTHERN MANITOBA Kornik, L. J. MacLaren, A. S. 1966 http://dx.doi.org/10.1139/e66-039 http://www.nrcresearchpress.com/doi/pdf/10.1139/e66-039 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 3, issue 4, page 547-557 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1966 crcansciencepubl https://doi.org/10.1139/e66-039 2023-11-19T13:38:36Z A regional aeromagnetic study of northern Manitoba suggests adjustments in the position of the Churchill–Superior boundary. This proposed boundary is correlated to a narrow, continuous magnetic low that changes direction at its northern end, from a northeast trend to an east–west trend that approximately parallels the 56° N. latitude line.The date pattern of age determinations chiefly supports the position of the proposed boundary. Comparison of aeromagnetic patterns to the geology establishes their close correlation. Aeromagnetic anomalies appear to be chiefly produced by near-surface material and can be correlated with the surface geology. A comparison of the gravity patterns to the aeromagnetic and geologic patterns establishes the apparent independence of the gravity patterns to the other two. The gravity anomalies appear to be produced by larger scale density contrasts which are not correlative with near-surface material. A deeper, crustal source of the gravity anomalies fits the evidence better. Article in Journal/Newspaper Churchill Canadian Science Publishing (via Crossref) Canadian Journal of Earth Sciences 3 4 547 557 |
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Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Kornik, L. J. MacLaren, A. S. AEROMAGNETIC STUDY OF THE CHURCHILL–SUPERIOR BOUNDARY IN NORTHERN MANITOBA |
topic_facet |
General Earth and Planetary Sciences |
description |
A regional aeromagnetic study of northern Manitoba suggests adjustments in the position of the Churchill–Superior boundary. This proposed boundary is correlated to a narrow, continuous magnetic low that changes direction at its northern end, from a northeast trend to an east–west trend that approximately parallels the 56° N. latitude line.The date pattern of age determinations chiefly supports the position of the proposed boundary. Comparison of aeromagnetic patterns to the geology establishes their close correlation. Aeromagnetic anomalies appear to be chiefly produced by near-surface material and can be correlated with the surface geology. A comparison of the gravity patterns to the aeromagnetic and geologic patterns establishes the apparent independence of the gravity patterns to the other two. The gravity anomalies appear to be produced by larger scale density contrasts which are not correlative with near-surface material. A deeper, crustal source of the gravity anomalies fits the evidence better. |
format |
Article in Journal/Newspaper |
author |
Kornik, L. J. MacLaren, A. S. |
author_facet |
Kornik, L. J. MacLaren, A. S. |
author_sort |
Kornik, L. J. |
title |
AEROMAGNETIC STUDY OF THE CHURCHILL–SUPERIOR BOUNDARY IN NORTHERN MANITOBA |
title_short |
AEROMAGNETIC STUDY OF THE CHURCHILL–SUPERIOR BOUNDARY IN NORTHERN MANITOBA |
title_full |
AEROMAGNETIC STUDY OF THE CHURCHILL–SUPERIOR BOUNDARY IN NORTHERN MANITOBA |
title_fullStr |
AEROMAGNETIC STUDY OF THE CHURCHILL–SUPERIOR BOUNDARY IN NORTHERN MANITOBA |
title_full_unstemmed |
AEROMAGNETIC STUDY OF THE CHURCHILL–SUPERIOR BOUNDARY IN NORTHERN MANITOBA |
title_sort |
aeromagnetic study of the churchill–superior boundary in northern manitoba |
publisher |
Canadian Science Publishing |
publishDate |
1966 |
url |
http://dx.doi.org/10.1139/e66-039 http://www.nrcresearchpress.com/doi/pdf/10.1139/e66-039 |
genre |
Churchill |
genre_facet |
Churchill |
op_source |
Canadian Journal of Earth Sciences volume 3, issue 4, page 547-557 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e66-039 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
3 |
container_issue |
4 |
container_start_page |
547 |
op_container_end_page |
557 |
_version_ |
1785581047373627392 |