Quelques Caractéristiques Géologiques et Minéralogiques des Dépôts d'Argile du Nord-Ouest du Québec
The clay deposits of Northwestern Quebec (from Matagami to Rupert House) were formed during the retreat of the Laurentian ice sheet. The oldest deposits are varved clays formed when the region was submerged by glacial Lake Barlow – Ojibway; the varved clays have been traced northward to Rupert House...
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1971
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Online Access: | http://dx.doi.org/10.1139/e71-142 http://www.nrcresearchpress.com/doi/pdf/10.1139/e71-142 |
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crcansciencepubl:10.1139/e71-142 2023-12-17T10:31:24+01:00 Quelques Caractéristiques Géologiques et Minéralogiques des Dépôts d'Argile du Nord-Ouest du Québec Ballivy, Gérard Pouliot, Gaston Loiselle, André 1971 http://dx.doi.org/10.1139/e71-142 http://www.nrcresearchpress.com/doi/pdf/10.1139/e71-142 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 8, issue 12, page 1525-1541 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1971 crcansciencepubl https://doi.org/10.1139/e71-142 2023-11-19T13:39:16Z The clay deposits of Northwestern Quebec (from Matagami to Rupert House) were formed during the retreat of the Laurentian ice sheet. The oldest deposits are varved clays formed when the region was submerged by glacial Lake Barlow – Ojibway; the varved clays have been traced northward to Rupert House. A minor glacial surge (Cochrane stadial) extending southward to Matagami, partly covered and reworked the lacustrine clays; evidences of this glacial readvance were observed on the left bank of Rupert River near Rupert House. Following this glacial stage, the land was invaded by sea water (Tyrrell Sea) from which were deposited the silty clay that underlies much of the Hudson Bay Lowlands.The mineralogical composition of the marine clay differs from that of the lacustrine clay by its carbonate content: 30% against 2% or less for the lacustrine clay. The clay fraction of the two types of clays is made up of similar minerals which, in order of decreasing importance are: illite, chlorite, vermiculite, and kaolinite. The marine clay is coarser grained than the lacustrine clay and, locally, gives rise to important flow-slides. The slides are subcircular in shape and have a typical bottle-neck opening; they have never been observed to develop in the varved clays. Their occurrence in the marine clays would seem to depend principally on the microstructure of the material, a silty clay that is fissured at the surface. The flow-slides occur specially during the spring thaw when the ground is oversaturated with water. Article in Journal/Newspaper Hudson Bay Ice Sheet Canadian Science Publishing (via Crossref) Hudson Bay Hudson Glacial Lake ENVELOPE(-129.463,-129.463,58.259,58.259) Rupert ENVELOPE(-134.187,-134.187,59.599,59.599) Tyrrell ENVELOPE(-69.512,-69.512,-69.634,-69.634) Canadian Journal of Earth Sciences 8 12 1525 1541 |
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 Ballivy, Gérard Pouliot, Gaston Loiselle, André Quelques Caractéristiques Géologiques et Minéralogiques des Dépôts d'Argile du Nord-Ouest du Québec |
topic_facet |
General Earth and Planetary Sciences |
description |
The clay deposits of Northwestern Quebec (from Matagami to Rupert House) were formed during the retreat of the Laurentian ice sheet. The oldest deposits are varved clays formed when the region was submerged by glacial Lake Barlow – Ojibway; the varved clays have been traced northward to Rupert House. A minor glacial surge (Cochrane stadial) extending southward to Matagami, partly covered and reworked the lacustrine clays; evidences of this glacial readvance were observed on the left bank of Rupert River near Rupert House. Following this glacial stage, the land was invaded by sea water (Tyrrell Sea) from which were deposited the silty clay that underlies much of the Hudson Bay Lowlands.The mineralogical composition of the marine clay differs from that of the lacustrine clay by its carbonate content: 30% against 2% or less for the lacustrine clay. The clay fraction of the two types of clays is made up of similar minerals which, in order of decreasing importance are: illite, chlorite, vermiculite, and kaolinite. The marine clay is coarser grained than the lacustrine clay and, locally, gives rise to important flow-slides. The slides are subcircular in shape and have a typical bottle-neck opening; they have never been observed to develop in the varved clays. Their occurrence in the marine clays would seem to depend principally on the microstructure of the material, a silty clay that is fissured at the surface. The flow-slides occur specially during the spring thaw when the ground is oversaturated with water. |
format |
Article in Journal/Newspaper |
author |
Ballivy, Gérard Pouliot, Gaston Loiselle, André |
author_facet |
Ballivy, Gérard Pouliot, Gaston Loiselle, André |
author_sort |
Ballivy, Gérard |
title |
Quelques Caractéristiques Géologiques et Minéralogiques des Dépôts d'Argile du Nord-Ouest du Québec |
title_short |
Quelques Caractéristiques Géologiques et Minéralogiques des Dépôts d'Argile du Nord-Ouest du Québec |
title_full |
Quelques Caractéristiques Géologiques et Minéralogiques des Dépôts d'Argile du Nord-Ouest du Québec |
title_fullStr |
Quelques Caractéristiques Géologiques et Minéralogiques des Dépôts d'Argile du Nord-Ouest du Québec |
title_full_unstemmed |
Quelques Caractéristiques Géologiques et Minéralogiques des Dépôts d'Argile du Nord-Ouest du Québec |
title_sort |
quelques caractéristiques géologiques et minéralogiques des dépôts d'argile du nord-ouest du québec |
publisher |
Canadian Science Publishing |
publishDate |
1971 |
url |
http://dx.doi.org/10.1139/e71-142 http://www.nrcresearchpress.com/doi/pdf/10.1139/e71-142 |
long_lat |
ENVELOPE(-129.463,-129.463,58.259,58.259) ENVELOPE(-134.187,-134.187,59.599,59.599) ENVELOPE(-69.512,-69.512,-69.634,-69.634) |
geographic |
Hudson Bay Hudson Glacial Lake Rupert Tyrrell |
geographic_facet |
Hudson Bay Hudson Glacial Lake Rupert Tyrrell |
genre |
Hudson Bay Ice Sheet |
genre_facet |
Hudson Bay Ice Sheet |
op_source |
Canadian Journal of Earth Sciences volume 8, issue 12, page 1525-1541 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e71-142 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
8 |
container_issue |
12 |
container_start_page |
1525 |
op_container_end_page |
1541 |
_version_ |
1785584700955295744 |