Early Proterozoic orogenic activity adjacent to the Hopedale block of southern Nain Province
The Hopedale block of the southern Archean Nain Province forms a wedge between the Early Proterozoic Makkovik and Churchill provinces. Lower Proterozoic supracrustal rocks, deposited on the Hopedale block following intrusion of tholeiitic dykes ca. 2200 Ma, were reworked at amphibolite facies, and t...
Main Authors: | , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Geological Association of Canada
1990
|
Subjects: | |
Online Access: | https://journals.lib.unb.ca/index.php/GC/article/view/3708 |
id |
ftuninewbrunojs:oai:ojs.journals.lib.unb.ca:article/3708 |
---|---|
record_format |
openpolar |
spelling |
ftuninewbrunojs:oai:ojs.journals.lib.unb.ca:article/3708 2023-05-15T17:10:02+02:00 Early Proterozoic orogenic activity adjacent to the Hopedale block of southern Nain Province Ermanovics, Ingo Ryan, Bruce 1990-12-12 application/pdf https://journals.lib.unb.ca/index.php/GC/article/view/3708 eng eng Geological Association of Canada https://journals.lib.unb.ca/index.php/GC/article/view/3708/4222 https://journals.lib.unb.ca/index.php/GC/article/view/3708 Copyright (c) 2015 Geoscience Canada Geoscience Canada; Volume 17, Number 4 (1990) 1911-4850 0315-0941 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research-article 1990 ftuninewbrunojs 2022-07-11T11:47:45Z The Hopedale block of the southern Archean Nain Province forms a wedge between the Early Proterozoic Makkovik and Churchill provinces. Lower Proterozoic supracrustal rocks, deposited on the Hopedale block following intrusion of tholeiitic dykes ca. 2200 Ma, were reworked at amphibolite facies, and thrust westward against undeformed portions of the block during orogeny in the Makkovik Province. The Makkovik/Hopedale block structural boundary is marked by a late, greenschist-facies dextral shear. By contrast, the boundary between the Hopedale block and the Churchill Province to the west is a fault zone that separates lower Proterozoic supracrustal rocks, deposited on a protocontinent of Churchill Province rocks, from fundamentally different rocks of the Nain Province. The intensity of Early Proterozoic deformation and metamorphism rises progressively from sub-greenschist fades in the Hopedale block to granulite fades in the interior of the Churchill Province. Article in Journal/Newspaper Makkovik University of New Brunswick: Centre for Digital Scholarship Journals Makkovik ENVELOPE(-59.178,-59.178,55.087,55.087) Nain ENVELOPE(-61.695,-61.695,56.542,56.542) |
institution |
Open Polar |
collection |
University of New Brunswick: Centre for Digital Scholarship Journals |
op_collection_id |
ftuninewbrunojs |
language |
English |
description |
The Hopedale block of the southern Archean Nain Province forms a wedge between the Early Proterozoic Makkovik and Churchill provinces. Lower Proterozoic supracrustal rocks, deposited on the Hopedale block following intrusion of tholeiitic dykes ca. 2200 Ma, were reworked at amphibolite facies, and thrust westward against undeformed portions of the block during orogeny in the Makkovik Province. The Makkovik/Hopedale block structural boundary is marked by a late, greenschist-facies dextral shear. By contrast, the boundary between the Hopedale block and the Churchill Province to the west is a fault zone that separates lower Proterozoic supracrustal rocks, deposited on a protocontinent of Churchill Province rocks, from fundamentally different rocks of the Nain Province. The intensity of Early Proterozoic deformation and metamorphism rises progressively from sub-greenschist fades in the Hopedale block to granulite fades in the interior of the Churchill Province. |
format |
Article in Journal/Newspaper |
author |
Ermanovics, Ingo Ryan, Bruce |
spellingShingle |
Ermanovics, Ingo Ryan, Bruce Early Proterozoic orogenic activity adjacent to the Hopedale block of southern Nain Province |
author_facet |
Ermanovics, Ingo Ryan, Bruce |
author_sort |
Ermanovics, Ingo |
title |
Early Proterozoic orogenic activity adjacent to the Hopedale block of southern Nain Province |
title_short |
Early Proterozoic orogenic activity adjacent to the Hopedale block of southern Nain Province |
title_full |
Early Proterozoic orogenic activity adjacent to the Hopedale block of southern Nain Province |
title_fullStr |
Early Proterozoic orogenic activity adjacent to the Hopedale block of southern Nain Province |
title_full_unstemmed |
Early Proterozoic orogenic activity adjacent to the Hopedale block of southern Nain Province |
title_sort |
early proterozoic orogenic activity adjacent to the hopedale block of southern nain province |
publisher |
Geological Association of Canada |
publishDate |
1990 |
url |
https://journals.lib.unb.ca/index.php/GC/article/view/3708 |
long_lat |
ENVELOPE(-59.178,-59.178,55.087,55.087) ENVELOPE(-61.695,-61.695,56.542,56.542) |
geographic |
Makkovik Nain |
geographic_facet |
Makkovik Nain |
genre |
Makkovik |
genre_facet |
Makkovik |
op_source |
Geoscience Canada; Volume 17, Number 4 (1990) 1911-4850 0315-0941 |
op_relation |
https://journals.lib.unb.ca/index.php/GC/article/view/3708/4222 https://journals.lib.unb.ca/index.php/GC/article/view/3708 |
op_rights |
Copyright (c) 2015 Geoscience Canada |
_version_ |
1766066451447283712 |