The near-surface geology of St. Georges Bay, Nova Scotia: implications for the Hollow Fault
A formline contour map, which depicts the near-surface, structural configuation of the strata underlying St. Georges Bay, northeastern Nova Scotia, was made from bedding attitude data compiled in the coastal areas; apparent dips measured from single-channel seismic reflection data; and true strikes...
Published in: | Canadian Journal of Earth Sciences |
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Language: | English |
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Online Access: | http://dx.doi.org/10.1139/e95-051 http://www.nrcresearchpress.com/doi/pdf/10.1139/e95-051 |
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crcansciencepubl:10.1139/e95-051 2024-05-19T07:38:30+00:00 The near-surface geology of St. Georges Bay, Nova Scotia: implications for the Hollow Fault Durling, P. Howells, K. Harvey, P. 1995 http://dx.doi.org/10.1139/e95-051 http://www.nrcresearchpress.com/doi/pdf/10.1139/e95-051 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 32, issue 5, page 603-613 ISSN 0008-4077 1480-3313 journal-article 1995 crcansciencepubl https://doi.org/10.1139/e95-051 2024-05-02T06:51:26Z A formline contour map, which depicts the near-surface, structural configuation of the strata underlying St. Georges Bay, northeastern Nova Scotia, was made from bedding attitude data compiled in the coastal areas; apparent dips measured from single-channel seismic reflection data; and true strikes and dips calculated at survey track intersections. The geology interpreted from the formline map is characterized by northeast-striking faults and fold axes. The folds in the bay comprise broad, open synclines and narrow, tightly folded or faulted anticlines. Gravity and deep seismic reflection data suggest that the faulted anticlines are intruded by salt. Correlations from offshore to onshore suggest that the structures mapped offshore in the bay extend onshore. The onshore extensions of the faulted anticlines are mapped as faults, and their antiformal nature is subdued. They are locally associated onshore with Carboniferous Windsor Group outcrop. The offshore extension of the Hollow Fault, which is interpreted as a major northeast-striking, Carboniferous strike-slip fault, was mapped as a 1500–2500 m wide deformation zone, using deep seismic reflection data. Gravity lows coincident with the deformation zone are interpreted as being caused by salt intrusions. The trend of the Hollow Fault Zone suggests that this fault complex (and its associated strike-slip movement) continues on land near Mabou, Cape Breton Island. However, it does not appear to continue offshore along the northwest coast of Cape Breton Island, as previously suggested. Article in Journal/Newspaper Breton Island Canadian Science Publishing Canadian Journal of Earth Sciences 32 5 603 613 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
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English |
description |
A formline contour map, which depicts the near-surface, structural configuation of the strata underlying St. Georges Bay, northeastern Nova Scotia, was made from bedding attitude data compiled in the coastal areas; apparent dips measured from single-channel seismic reflection data; and true strikes and dips calculated at survey track intersections. The geology interpreted from the formline map is characterized by northeast-striking faults and fold axes. The folds in the bay comprise broad, open synclines and narrow, tightly folded or faulted anticlines. Gravity and deep seismic reflection data suggest that the faulted anticlines are intruded by salt. Correlations from offshore to onshore suggest that the structures mapped offshore in the bay extend onshore. The onshore extensions of the faulted anticlines are mapped as faults, and their antiformal nature is subdued. They are locally associated onshore with Carboniferous Windsor Group outcrop. The offshore extension of the Hollow Fault, which is interpreted as a major northeast-striking, Carboniferous strike-slip fault, was mapped as a 1500–2500 m wide deformation zone, using deep seismic reflection data. Gravity lows coincident with the deformation zone are interpreted as being caused by salt intrusions. The trend of the Hollow Fault Zone suggests that this fault complex (and its associated strike-slip movement) continues on land near Mabou, Cape Breton Island. However, it does not appear to continue offshore along the northwest coast of Cape Breton Island, as previously suggested. |
format |
Article in Journal/Newspaper |
author |
Durling, P. Howells, K. Harvey, P. |
spellingShingle |
Durling, P. Howells, K. Harvey, P. The near-surface geology of St. Georges Bay, Nova Scotia: implications for the Hollow Fault |
author_facet |
Durling, P. Howells, K. Harvey, P. |
author_sort |
Durling, P. |
title |
The near-surface geology of St. Georges Bay, Nova Scotia: implications for the Hollow Fault |
title_short |
The near-surface geology of St. Georges Bay, Nova Scotia: implications for the Hollow Fault |
title_full |
The near-surface geology of St. Georges Bay, Nova Scotia: implications for the Hollow Fault |
title_fullStr |
The near-surface geology of St. Georges Bay, Nova Scotia: implications for the Hollow Fault |
title_full_unstemmed |
The near-surface geology of St. Georges Bay, Nova Scotia: implications for the Hollow Fault |
title_sort |
near-surface geology of st. georges bay, nova scotia: implications for the hollow fault |
publisher |
Canadian Science Publishing |
publishDate |
1995 |
url |
http://dx.doi.org/10.1139/e95-051 http://www.nrcresearchpress.com/doi/pdf/10.1139/e95-051 |
genre |
Breton Island |
genre_facet |
Breton Island |
op_source |
Canadian Journal of Earth Sciences volume 32, issue 5, page 603-613 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e95-051 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
32 |
container_issue |
5 |
container_start_page |
603 |
op_container_end_page |
613 |
_version_ |
1799477954897510400 |