STRUCTURAL ANALYSIS MOKKA FIORD AND SOUTH FIORD DOMES, AXEL HEIBERG ISLAND, CANADIAN ARCTIC
Numerous piercement structures occur on the Queen Elizabeth Islands of the Canadian Arctic Archipelago. The exposed cores of these structures are composed chiefly of Pennsylvanian anhydrite, which may be underlain by rock salt. The cores are surrounded by Mesozoic rocks.A geometric analysis of two w...
Published in: | Canadian Journal of Earth Sciences |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
1967
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/e67-082 http://www.nrcresearchpress.com/doi/pdf/10.1139/e67-082 |
id |
crcansciencepubl:10.1139/e67-082 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/e67-082 2024-09-15T17:52:11+00:00 STRUCTURAL ANALYSIS MOKKA FIORD AND SOUTH FIORD DOMES, AXEL HEIBERG ISLAND, CANADIAN ARCTIC Schwerdtner, W. M. Clark, A. R. 1967 http://dx.doi.org/10.1139/e67-082 http://www.nrcresearchpress.com/doi/pdf/10.1139/e67-082 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 4, issue 6, page 1229-1245 ISSN 0008-4077 1480-3313 journal-article 1967 crcansciencepubl https://doi.org/10.1139/e67-082 2024-08-22T04:08:45Z Numerous piercement structures occur on the Queen Elizabeth Islands of the Canadian Arctic Archipelago. The exposed cores of these structures are composed chiefly of Pennsylvanian anhydrite, which may be underlain by rock salt. The cores are surrounded by Mesozoic rocks.A geometric analysis of two well-exposed domes on Axel Heiberg Island was made to learn whether the anhydrite behaved as an active source material or as a passive overburden during doming. Attitudes of bedding and lenticular limestone boudins were measured in both domes, and the axial traces of macroscopic folds were constructed.The flow pattern in the anhydritic domal cores corresponds to that predicted by model studies, suggesting that layered anhydrite behaved essentially as a source material for the domes. The South Fiord Dome is composed of three sub-cores, whereas the Mokka Fiord Dome rose as a single unit.During late stages of doming, large radial fractures developed in upper levels of the anhydrite cores. These fractures seem to correspond to the radial cracks in model overburdens, and indicate a change in the mechanical behaviour of anhydrite. Article in Journal/Newspaper Arctic Archipelago Axel Heiberg Island Canadian Arctic Archipelago Queen Elizabeth Islands Canadian Science Publishing Canadian Journal of Earth Sciences 4 6 1229 1245 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
Numerous piercement structures occur on the Queen Elizabeth Islands of the Canadian Arctic Archipelago. The exposed cores of these structures are composed chiefly of Pennsylvanian anhydrite, which may be underlain by rock salt. The cores are surrounded by Mesozoic rocks.A geometric analysis of two well-exposed domes on Axel Heiberg Island was made to learn whether the anhydrite behaved as an active source material or as a passive overburden during doming. Attitudes of bedding and lenticular limestone boudins were measured in both domes, and the axial traces of macroscopic folds were constructed.The flow pattern in the anhydritic domal cores corresponds to that predicted by model studies, suggesting that layered anhydrite behaved essentially as a source material for the domes. The South Fiord Dome is composed of three sub-cores, whereas the Mokka Fiord Dome rose as a single unit.During late stages of doming, large radial fractures developed in upper levels of the anhydrite cores. These fractures seem to correspond to the radial cracks in model overburdens, and indicate a change in the mechanical behaviour of anhydrite. |
format |
Article in Journal/Newspaper |
author |
Schwerdtner, W. M. Clark, A. R. |
spellingShingle |
Schwerdtner, W. M. Clark, A. R. STRUCTURAL ANALYSIS MOKKA FIORD AND SOUTH FIORD DOMES, AXEL HEIBERG ISLAND, CANADIAN ARCTIC |
author_facet |
Schwerdtner, W. M. Clark, A. R. |
author_sort |
Schwerdtner, W. M. |
title |
STRUCTURAL ANALYSIS MOKKA FIORD AND SOUTH FIORD DOMES, AXEL HEIBERG ISLAND, CANADIAN ARCTIC |
title_short |
STRUCTURAL ANALYSIS MOKKA FIORD AND SOUTH FIORD DOMES, AXEL HEIBERG ISLAND, CANADIAN ARCTIC |
title_full |
STRUCTURAL ANALYSIS MOKKA FIORD AND SOUTH FIORD DOMES, AXEL HEIBERG ISLAND, CANADIAN ARCTIC |
title_fullStr |
STRUCTURAL ANALYSIS MOKKA FIORD AND SOUTH FIORD DOMES, AXEL HEIBERG ISLAND, CANADIAN ARCTIC |
title_full_unstemmed |
STRUCTURAL ANALYSIS MOKKA FIORD AND SOUTH FIORD DOMES, AXEL HEIBERG ISLAND, CANADIAN ARCTIC |
title_sort |
structural analysis mokka fiord and south fiord domes, axel heiberg island, canadian arctic |
publisher |
Canadian Science Publishing |
publishDate |
1967 |
url |
http://dx.doi.org/10.1139/e67-082 http://www.nrcresearchpress.com/doi/pdf/10.1139/e67-082 |
genre |
Arctic Archipelago Axel Heiberg Island Canadian Arctic Archipelago Queen Elizabeth Islands |
genre_facet |
Arctic Archipelago Axel Heiberg Island Canadian Arctic Archipelago Queen Elizabeth Islands |
op_source |
Canadian Journal of Earth Sciences volume 4, issue 6, page 1229-1245 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e67-082 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
4 |
container_issue |
6 |
container_start_page |
1229 |
op_container_end_page |
1245 |
_version_ |
1810294263725948928 |