Copper mineralization near an intra-Rapitan unconformity, Nite copper prospect, Mackenzie Mountains, Northwest Territories, Canada
Copper minerals are known from at least five stratigraphic levels above and below an angular unconformity recognized within rocks of the Rapitan Group on and near the Nite copper prospect, Mackenzie Mountains. The main showing on the prospect is structurally controlled and occurs in siliceous dolost...
Published in: | Canadian Journal of Earth Sciences |
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1979
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crcansciencepubl:10.1139/e79-005 2023-12-17T10:33:15+01:00 Copper mineralization near an intra-Rapitan unconformity, Nite copper prospect, Mackenzie Mountains, Northwest Territories, Canada Helmstaedt, Herwart Eisbacher, G. H. McGregor, J. A. 1979 http://dx.doi.org/10.1139/e79-005 http://www.nrcresearchpress.com/doi/pdf/10.1139/e79-005 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 16, issue 1, page 50-59 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1979 crcansciencepubl https://doi.org/10.1139/e79-005 2023-11-19T13:39:39Z Copper minerals are known from at least five stratigraphic levels above and below an angular unconformity recognized within rocks of the Rapitan Group on and near the Nite copper prospect, Mackenzie Mountains. The main showing on the prospect is structurally controlled and occurs in siliceous dolostone near the top of the folded and faulted Coppercap Formation, directly beneath an unconformity separating two local members of the Sayunei Formation (Rapitan Group). The copper was emplaced in tectonically fractured dolostone, precipitated from solutions that may have descended from copper-bearing conglomerates in the Rapitan Group above the unconformity, or ascended from weakly mineralized carbonates below. Mechanical reworking of older strata-bound copper deposits is indicated by significant copper content in clasts eroded from older rocks of the northeastern Mackenzie Mountains. The ultimate source of copper can probably be sought in basaltic dikes and flows emplaced prior to deposition of Redstone River and Coppercap formations during an early phase of crustal extension in the northern part of the Cordilleran miogeosyncline. Article in Journal/Newspaper Mackenzie mountains Northwest Territories Canadian Science Publishing (via Crossref) Northwest Territories Canada Redstone River ENVELOPE(-124.548,-124.548,64.286,64.286) Canadian Journal of Earth Sciences 16 1 50 59 |
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 Helmstaedt, Herwart Eisbacher, G. H. McGregor, J. A. Copper mineralization near an intra-Rapitan unconformity, Nite copper prospect, Mackenzie Mountains, Northwest Territories, Canada |
topic_facet |
General Earth and Planetary Sciences |
description |
Copper minerals are known from at least five stratigraphic levels above and below an angular unconformity recognized within rocks of the Rapitan Group on and near the Nite copper prospect, Mackenzie Mountains. The main showing on the prospect is structurally controlled and occurs in siliceous dolostone near the top of the folded and faulted Coppercap Formation, directly beneath an unconformity separating two local members of the Sayunei Formation (Rapitan Group). The copper was emplaced in tectonically fractured dolostone, precipitated from solutions that may have descended from copper-bearing conglomerates in the Rapitan Group above the unconformity, or ascended from weakly mineralized carbonates below. Mechanical reworking of older strata-bound copper deposits is indicated by significant copper content in clasts eroded from older rocks of the northeastern Mackenzie Mountains. The ultimate source of copper can probably be sought in basaltic dikes and flows emplaced prior to deposition of Redstone River and Coppercap formations during an early phase of crustal extension in the northern part of the Cordilleran miogeosyncline. |
format |
Article in Journal/Newspaper |
author |
Helmstaedt, Herwart Eisbacher, G. H. McGregor, J. A. |
author_facet |
Helmstaedt, Herwart Eisbacher, G. H. McGregor, J. A. |
author_sort |
Helmstaedt, Herwart |
title |
Copper mineralization near an intra-Rapitan unconformity, Nite copper prospect, Mackenzie Mountains, Northwest Territories, Canada |
title_short |
Copper mineralization near an intra-Rapitan unconformity, Nite copper prospect, Mackenzie Mountains, Northwest Territories, Canada |
title_full |
Copper mineralization near an intra-Rapitan unconformity, Nite copper prospect, Mackenzie Mountains, Northwest Territories, Canada |
title_fullStr |
Copper mineralization near an intra-Rapitan unconformity, Nite copper prospect, Mackenzie Mountains, Northwest Territories, Canada |
title_full_unstemmed |
Copper mineralization near an intra-Rapitan unconformity, Nite copper prospect, Mackenzie Mountains, Northwest Territories, Canada |
title_sort |
copper mineralization near an intra-rapitan unconformity, nite copper prospect, mackenzie mountains, northwest territories, canada |
publisher |
Canadian Science Publishing |
publishDate |
1979 |
url |
http://dx.doi.org/10.1139/e79-005 http://www.nrcresearchpress.com/doi/pdf/10.1139/e79-005 |
long_lat |
ENVELOPE(-124.548,-124.548,64.286,64.286) |
geographic |
Northwest Territories Canada Redstone River |
geographic_facet |
Northwest Territories Canada Redstone River |
genre |
Mackenzie mountains Northwest Territories |
genre_facet |
Mackenzie mountains Northwest Territories |
op_source |
Canadian Journal of Earth Sciences volume 16, issue 1, page 50-59 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e79-005 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
16 |
container_issue |
1 |
container_start_page |
50 |
op_container_end_page |
59 |
_version_ |
1785587173338120192 |