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Glacial erosion and ice sheet divides, northeastern Laurentide Ice Sheet, on the basis of the distribution of limestone erratics

1979; Geological Society of America; Volume: 7; Issue: 12 Linguagem: Inglês

10.1130/0091-7613(1979)7 2.0.co;2

1943-2682

John T. Andrews, Gifford H. Miller,

Methane Hydrates and Related Phenomena

Research Article| December 01, 1979 Glacial erosion and ice sheet divides, northeastern Laurentide Ice Sheet, on the basis of the distribution of limestone erratics J. T. Andrews; J. T. Andrews 1Institute of Arctic and Alpine Research and Department of Geological Sciences, University of Colorado, Boulder, Colorado 80309 Search for other works by this author on: GSW Google Scholar G. H. Miller G. H. Miller 1Institute of Arctic and Alpine Research and Department of Geological Sciences, University of Colorado, Boulder, Colorado 80309 Search for other works by this author on: GSW Google Scholar Author and Article Information J. T. Andrews 1Institute of Arctic and Alpine Research and Department of Geological Sciences, University of Colorado, Boulder, Colorado 80309 G. H. Miller 1Institute of Arctic and Alpine Research and Department of Geological Sciences, University of Colorado, Boulder, Colorado 80309 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1979) 7 (12): 592–596. https://doi.org/10.1130/0091-7613(1979)7 2.0.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation J. T. Andrews, G. H. Miller; Glacial erosion and ice sheet divides, northeastern Laurentide Ice Sheet, on the basis of the distribution of limestone erratics. Geology 1979;; 7 (12): 592–596. doi: https://doi.org/10.1130/0091-7613(1979)7 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 SocietyGeology Search Advanced Search Abstract Paleozoic limestone erratics are common in tills and glaciomarine sediments along the outermost coast of eastern Baffin Island, Northwest Territories. They are rare immediately east of the Paleozoic limestone-Precambrian shield contact on western Baffin Island. Therefore, we conclude that (1) the presence of abundant limestone erratics in east coast tills suggests that limestone bed rock of Paleozoic age occurs at the mouths of and within many of the major sounds and fiords of eastern Baffin Island; thus, these large-scale topographic features are primarily tectonic in origin; and (2) the rarity of limestone erratics along probable flow lines from a hypothetical ice center over Hudson Bay refutes the concept of a single-domed Laurentide Ice Sheet; an appealing alternative is a more complex ice mass with an ice divide lying above the coast of western Baffin Island. 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.