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POSTGLACIAL MARINE SUBMERGENCE IN CENTRAL ARCTIC CANADA

1954; Geological Society of America; Volume: 65; Issue: 5 Linguagem: Inglês

10.1130/0016-7606(1954)65[457

1943-2674

J. Brian Bird,

Indigenous Studies and Ecology

Research Article| May 01, 1954 POSTGLACIAL MARINE SUBMERGENCE IN CENTRAL ARCTIC CANADA J. BRIAN BIRD J. BRIAN BIRD MCGILL UNIVERSITY, MONTREAL, QUEBEC, CANADA Search for other works by this author on: GSW Google Scholar Author and Article Information J. BRIAN BIRD MCGILL UNIVERSITY, MONTREAL, QUEBEC, CANADA Publisher: Geological Society of America Received: 26 May 1953 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1954, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1954) 65 (5): 457–464. https://doi.org/10.1130/0016-7606(1954)65[457:PMSICA]2.0.CO;2 Article history Received: 26 May 1953 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation J. BRIAN BIRD; POSTGLACIAL MARINE SUBMERGENCE IN CENTRAL ARCTIC CANADA. GSA Bulletin 1954;; 65 (5): 457–464. doi: https://doi.org/10.1130/0016-7606(1954)65[457:PMSICA]2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract In the Canadian Northwest Territories west of Hudson Bay, the postglacial marine transgression was more extensive than in any other part of North America. Although there are numerous isolated observations of strand lines and other raised marine features, there has been no systematic study of the maximum depth of this sea and the form of the subsequent emergence of the land.Measurements made during 3 summer's field work in the area show that on the mainland the sea reached a depth of 360–400 feet. On the islands in the north of Hudson Bay the depth was 550–650 feet. The difference is explained by unequal waning of the ice sheet. In the western part of the Thelon and Dubawnt basins a large proglacial lake preceded the invasion of the sea. The lake fell by clearly defined stages. Subsequent emergence from the sea was continuous until the final 100 feet when there were two periods of temporary stability. There is widespread evidence that the land is still rising.In the areas that were submerged, unconsolidated debris has been reworked by wave action into beaches, spits, bars, and other shoreline features. Along the shallower coasts these have completely changed the character of the landscape. The marine transgression did not last long enough to produce erosional features in consolidated rock. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.