The Newfoundland and Labrador Shelves Bioregion, located on the glaciated continental shelf and adjacent continental slope of eastern Canada, is classified into units that reflect its great physiographic diversity. There are ten shelf units: bedrock zone, fjord systems, major inlet, shelf-crossing troughs, four types of offshore banks, basin, and disturbed (glaciotectonic) terrain. There are three units on the continental slope: channelized areas, trough-mouth areas, and large sedimentary drifts. A series of vignettes illustrates both the distinguishing characteristics of the principal geomorphic units and the morphologic diversity within them. A sediment mobility analysis reveals that wave- and current-generated disturbances are dominant and largely depth-controlled within the shelf units, while the south-flowing Labrador Current impacts sediment transport and mobility along the continental slope.
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Research Article|
January 23, 2023
Geomorphic diversity of the Newfoundland and Labrador Shelves Bioregion
John Shaw;
a
Geological Survey of Canada (Atlantic), Bedford Institute of Oceanography, 1 Challenger Drive, Dartmouth, NS B2Y 4A2, CanadaCorresponding author: John Shaw (email: john.shaw@canada.ca)
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M.Z. Li;
M.Z. Li
(Investigation, Methodology, Writing – original draft, Writing – review & editing)
a
Geological Survey of Canada (Atlantic), Bedford Institute of Oceanography, 1 Challenger Drive, Dartmouth, NS B2Y 4A2, Canada
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V.E. Kostylev
V.E. Kostylev
(Investigation, Methodology, Writing – original draft)
a
Geological Survey of Canada (Atlantic), Bedford Institute of Oceanography, 1 Challenger Drive, Dartmouth, NS B2Y 4A2, Canada
Search for other works by this author on:
a
Geological Survey of Canada (Atlantic), Bedford Institute of Oceanography, 1 Challenger Drive, Dartmouth, NS B2Y 4A2, Canada
M.Z. Li
Investigation, Methodology, Writing – original draft, Writing – review & editing
a
Geological Survey of Canada (Atlantic), Bedford Institute of Oceanography, 1 Challenger Drive, Dartmouth, NS B2Y 4A2, Canada
V.E. Kostylev
Investigation, Methodology, Writing – original draft
a
Geological Survey of Canada (Atlantic), Bedford Institute of Oceanography, 1 Challenger Drive, Dartmouth, NS B2Y 4A2, CanadaCorresponding author: John Shaw (email: john.shaw@canada.ca)
Publisher: Canadian Science Publishing
Received:
20 Jul 2022
Accepted:
02 Dec 2022
Accepted Manuscript:
23 Jan 2023
First Online:
09 May 2023
Online ISSN: 1480-3313
Print ISSN: 0008-4077
The Crown
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Canadian Journal of Earth Sciences (2023) 60 (5): 513–536.
Article history
Received:
20 Jul 2022
Accepted:
02 Dec 2022
Accepted Manuscript:
23 Jan 2023
First Online:
09 May 2023
Funding
This work was funded by Natural Resources Canada under the aegis of the Geological Survey of Canada’s Marine Geoscience for Marine Spatial Planning Program.
Citation
John Shaw, M.Z. Li, V.E. Kostylev; Geomorphic diversity of the Newfoundland and Labrador Shelves Bioregion. Canadian Journal of Earth Sciences 2023;; 60 (5): 513–536. doi: https://doi.org/10.1139/cjes-2022-0080
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