Mesofabric, Microfrabric, and Submicrofabric of Ice-Thrust Bedrock, Highvale Mine, Wabamum Lake Area, Alberta
The fabric of the ice-thrust argillaceous bedrock from a shear zone was studied in hand specimens, under a polarizing microscope and a scanning electron microscope. The fabric included principal displacement shears, Riedel shears, conjugate sets of particle alignments, cutans, lithorelics, and aggre...
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ftunivalberta:oai:era.library.ualberta.ca:5961898d-7b6d-4be3-8c10-45f3c7b13a75 2023-05-15T16:37:11+02:00 Mesofabric, Microfrabric, and Submicrofabric of Ice-Thrust Bedrock, Highvale Mine, Wabamum Lake Area, Alberta Cruden, D. M. Tsui, P. C. Thomson, S. 1988 https://era.library.ualberta.ca/items/5961898d-7b6d-4be3-8c10-45f3c7b13a75 https://doi.org/10.7939/R3GM81R4N English eng https://era.library.ualberta.ca/items/5961898d-7b6d-4be3-8c10-45f3c7b13a75 doi:10.7939/R3GM81R4N © 1988 NRC Research Press (Canadian Science Publishing). This version of this article is open access and can be downloaded and shared. The original author(s) and source must be cited. Ice-thrust argillaceous bedrock Shear zones Article (Published) 1988 ftunivalberta https://doi.org/10.7939/R3GM81R4N 2022-08-22T20:10:58Z The fabric of the ice-thrust argillaceous bedrock from a shear zone was studied in hand specimens, under a polarizing microscope and a scanning electron microscope. The fabric included principal displacement shears, Riedel shears, conjugate sets of particle alignments, cutans, lithorelics, and aggregations which dense cores of randomly oriented groups of clay platelets wrapped by an external layer of oriented clay particles in a turbostatic arrangement. In addition, the bedrock has been disturbed by permafrost, cycles of loading and unloading, and weathering, causing the magnitude of deformation to vary within the ice-thrust shear zone.The fabric of the ice-thrust shear zone is similar to that of shear zones formed by tectonic activity and by laboratory shear tests, suggesting that all these shear zones were formed under conditions of similar kinematic restraint. Other/Unknown Material Ice permafrost University of Alberta: Era - Education and Research Archive |
institution |
Open Polar |
collection |
University of Alberta: Era - Education and Research Archive |
op_collection_id |
ftunivalberta |
language |
English |
topic |
Ice-thrust argillaceous bedrock Shear zones |
spellingShingle |
Ice-thrust argillaceous bedrock Shear zones Cruden, D. M. Tsui, P. C. Thomson, S. Mesofabric, Microfrabric, and Submicrofabric of Ice-Thrust Bedrock, Highvale Mine, Wabamum Lake Area, Alberta |
topic_facet |
Ice-thrust argillaceous bedrock Shear zones |
description |
The fabric of the ice-thrust argillaceous bedrock from a shear zone was studied in hand specimens, under a polarizing microscope and a scanning electron microscope. The fabric included principal displacement shears, Riedel shears, conjugate sets of particle alignments, cutans, lithorelics, and aggregations which dense cores of randomly oriented groups of clay platelets wrapped by an external layer of oriented clay particles in a turbostatic arrangement. In addition, the bedrock has been disturbed by permafrost, cycles of loading and unloading, and weathering, causing the magnitude of deformation to vary within the ice-thrust shear zone.The fabric of the ice-thrust shear zone is similar to that of shear zones formed by tectonic activity and by laboratory shear tests, suggesting that all these shear zones were formed under conditions of similar kinematic restraint. |
format |
Other/Unknown Material |
author |
Cruden, D. M. Tsui, P. C. Thomson, S. |
author_facet |
Cruden, D. M. Tsui, P. C. Thomson, S. |
author_sort |
Cruden, D. M. |
title |
Mesofabric, Microfrabric, and Submicrofabric of Ice-Thrust Bedrock, Highvale Mine, Wabamum Lake Area, Alberta |
title_short |
Mesofabric, Microfrabric, and Submicrofabric of Ice-Thrust Bedrock, Highvale Mine, Wabamum Lake Area, Alberta |
title_full |
Mesofabric, Microfrabric, and Submicrofabric of Ice-Thrust Bedrock, Highvale Mine, Wabamum Lake Area, Alberta |
title_fullStr |
Mesofabric, Microfrabric, and Submicrofabric of Ice-Thrust Bedrock, Highvale Mine, Wabamum Lake Area, Alberta |
title_full_unstemmed |
Mesofabric, Microfrabric, and Submicrofabric of Ice-Thrust Bedrock, Highvale Mine, Wabamum Lake Area, Alberta |
title_sort |
mesofabric, microfrabric, and submicrofabric of ice-thrust bedrock, highvale mine, wabamum lake area, alberta |
publishDate |
1988 |
url |
https://era.library.ualberta.ca/items/5961898d-7b6d-4be3-8c10-45f3c7b13a75 https://doi.org/10.7939/R3GM81R4N |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_relation |
https://era.library.ualberta.ca/items/5961898d-7b6d-4be3-8c10-45f3c7b13a75 doi:10.7939/R3GM81R4N |
op_rights |
© 1988 NRC Research Press (Canadian Science Publishing). This version of this article is open access and can be downloaded and shared. The original author(s) and source must be cited. |
op_doi |
https://doi.org/10.7939/R3GM81R4N |
_version_ |
1766027475964395520 |