00000nam 2200000zi 4500 9.903045 CaOODSP 20241127082707 m o d f cr |n||||||||| 210902e198302##oncbd otb f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn-on En13-5/84-43E-PDF Coakley, J. P. (John Phillip), 1940- author. Subsurface sediments and late quaternary history of Long Point, Lake Erie / by J.P. Coakley. Burlington, Ontario : Hydraulics Division, National Water Research Institute, Canada Centre for Inland Waters, February 1983. 1 online resource (viii, 50 pages, 27 unnumbered pages) : maps, charts. text txt rdacontent computer c rdamedia online resource cr rdacarrier [NWRI contribution] ; 84-43 Digitized edition from print [produced by Environment and Climate Change Canada]. "Study 83-342." Includes bibliographical references (pages 41-45). "Postglacial sediment profiles from three deep boreholes drilled on Long Point exhibit a consistent sequence, with fine, uniform silty clay grading upward to interlaminated silty sand, which is overlain by well-sorted medium sand. The underlying glaciolacustrine clay, where encountered, shows clear signs of erosion. The sequence reflects a progressive change in the postglacial depositional environment from initial subaerial or shallow-water conditions, to sheltered (lagoonal) conditions at the site, through a transitional phase, and finally to the present high-energy spit deposition"--Abstract. Includes summaries in French. Lake sediments Erie, Lake. Paleogeography Erie, Lake. Sediments (Geology) Ontario Long Point (Peninsula) Sédiments lacustres Érié, Lac. Paléogéographie Érié, Lac. Sédiments (Géologie) Ontario Longue, Pointe (Haldimand-Norfolk) National Water Research Institute (Canada). Hydraulics Division, issuing body. Canada Centre for Inland Waters, issuing body. NWRI contribution ; 84-43. (CaOODSP)9.844121 PDF 6.72 MB https://publications.gc.ca/collections/collection_2021/eccc/En13-5-84-43-eng.pdf