Paleomagnetism of Steel Mountain and Indian Head anorthosites from western Newfoundland
As part of studies of anorthosites from the northern hemisphere, the paleomagnetism of two anorthosite inliers at Indian Head and Steel Mountain in western Newfoundland is described. The six sites at Indian Head retain a stable remanent magnetization and yield a paleomagnetic pole at 8 °S, 157½° E(δ...
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Language: | English |
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Canadian Science Publishing
1976
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crcansciencepubl:10.1139/e76-007 2023-12-17T10:38:08+01:00 Paleomagnetism of Steel Mountain and Indian Head anorthosites from western Newfoundland Murthy, G. S. Rao, K. V. 1976 http://dx.doi.org/10.1139/e76-007 http://www.nrcresearchpress.com/doi/pdf/10.1139/e76-007 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 13, issue 1, page 75-83 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1976 crcansciencepubl https://doi.org/10.1139/e76-007 2023-11-19T13:38:54Z As part of studies of anorthosites from the northern hemisphere, the paleomagnetism of two anorthosite inliers at Indian Head and Steel Mountain in western Newfoundland is described. The six sites at Indian Head retain a stable remanent magnetization and yield a paleomagnetic pole at 8 °S, 157½° E(δp = 15°, δm = 20°). This is close to poles for anorthositic and other rock units from within the Grenville Province that represent magnetization of age 1000 m. y., suggesting that there is no relative rotation between western Newfoundland and the southeastern part of the Canadian Shield, at least since the time of the Grenville orogeny. The ten sites at Steel Mountain also retain a stable magnetization, which yields a paleomagnetic pole at 22½° S, 41 °W (δp = 8°, δm = 14°). This position is closer to lower Paleozoic poles from Newfoundland and thus probably represents a lower Paleozoic magnetization. Article in Journal/Newspaper Newfoundland Canadian Science Publishing (via Crossref) Indian Canadian Journal of Earth Sciences 13 1 75 83 |
institution |
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 Murthy, G. S. Rao, K. V. Paleomagnetism of Steel Mountain and Indian Head anorthosites from western Newfoundland |
topic_facet |
General Earth and Planetary Sciences |
description |
As part of studies of anorthosites from the northern hemisphere, the paleomagnetism of two anorthosite inliers at Indian Head and Steel Mountain in western Newfoundland is described. The six sites at Indian Head retain a stable remanent magnetization and yield a paleomagnetic pole at 8 °S, 157½° E(δp = 15°, δm = 20°). This is close to poles for anorthositic and other rock units from within the Grenville Province that represent magnetization of age 1000 m. y., suggesting that there is no relative rotation between western Newfoundland and the southeastern part of the Canadian Shield, at least since the time of the Grenville orogeny. The ten sites at Steel Mountain also retain a stable magnetization, which yields a paleomagnetic pole at 22½° S, 41 °W (δp = 8°, δm = 14°). This position is closer to lower Paleozoic poles from Newfoundland and thus probably represents a lower Paleozoic magnetization. |
format |
Article in Journal/Newspaper |
author |
Murthy, G. S. Rao, K. V. |
author_facet |
Murthy, G. S. Rao, K. V. |
author_sort |
Murthy, G. S. |
title |
Paleomagnetism of Steel Mountain and Indian Head anorthosites from western Newfoundland |
title_short |
Paleomagnetism of Steel Mountain and Indian Head anorthosites from western Newfoundland |
title_full |
Paleomagnetism of Steel Mountain and Indian Head anorthosites from western Newfoundland |
title_fullStr |
Paleomagnetism of Steel Mountain and Indian Head anorthosites from western Newfoundland |
title_full_unstemmed |
Paleomagnetism of Steel Mountain and Indian Head anorthosites from western Newfoundland |
title_sort |
paleomagnetism of steel mountain and indian head anorthosites from western newfoundland |
publisher |
Canadian Science Publishing |
publishDate |
1976 |
url |
http://dx.doi.org/10.1139/e76-007 http://www.nrcresearchpress.com/doi/pdf/10.1139/e76-007 |
geographic |
Indian |
geographic_facet |
Indian |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Canadian Journal of Earth Sciences volume 13, issue 1, page 75-83 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e76-007 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
13 |
container_issue |
1 |
container_start_page |
75 |
op_container_end_page |
83 |
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1785538605691699200 |