Late Quaternary changes of level in western and southern Newfoundland

Abstract

Research Article| November 01, 1940 Late Quaternary changes of level in western and southern Newfoundland RICHARD FOSTER FLINT RICHARD FOSTER FLINT Search for other works by this author on: GSW Google Scholar GSA Bulletin (1940) 51 (11): 1757–1780. https://doi.org/10.1130/GSAB-51-1757 Article history received: 05 Apr 1940 first online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation RICHARD FOSTER FLINT; Late Quaternary changes of level in western and southern Newfoundland. GSA Bulletin 1940;; 51 (11): 1757–1780. doi: https://doi.org/10.1130/GSAB-51-1757 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu nav search search input Search input auto suggest search filter All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract Emerged Quaternary marine features are numerous along the west coast of Newfoundland, although their distribution is patchy. They include wave-cut benches and cliffs, localized constructional forms such as beach ridges, bars, and deltas, and a discontinuous blanket of fossil-bearing marine sediments. These features reach progressively higher elevations toward the north; their positions in long east-west bays indicate a westerly component in the northward rise.The highest marine limit is very indistinctly recorded, but a lower strand line, cutting the latest glacial deposits, and rising northwestward, is well marked by wave-cut benches on weak rocks. Strand lines in intermediate positions are very weak, but wave-cut benches are well developed at present sea level. These facts indicate upwarping following deglaciation, the movement having been interrupted by one long pause and followed by another pause at present sea level.No unequivocal evidence of emergence was found along the western half of the south coast, although emergence may be recorded farther east. The northwestward rise of the marine features along the west coast is consistent with (though it does not prove) the hypothesis that part or all of Newfoundland was invaded by the Labrador ice sheet during the latest (presumably Wisconsin) glacial age and that the warping was caused principally by unloading of the crust by the Labrador ice sheet during the same glacial age.Evidence in two districts on the west coast indicates that at least part of the postglacial eustatic rise of sea level occurred while glacier ice was still actively present, and prior to at least part of the crustal warping. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not currently have access to this article.