Glacial and postglacial sediments in Lakes Superior and Michigan

Abstract

Research Article| August 01, 1979 Glacial and postglacial sediments in Lakes Superior and Michigan JERRY A. LINEBACK; JERRY A. LINEBACK 1Illinois State Geological Survey, Urbana, Illinois 61801 Search for other works by this author on: GSW Google Scholar CAROL I. DELL; CAROL I. DELL 2Canada Centre for Inland Waters, Burlington, Ontario L7R 4A6 Canada Search for other works by this author on: GSW Google Scholar DAVID L. GROSS DAVID L. GROSS 3Illinois State Geological Survey, Urbana, Illinois 61801 Search for other works by this author on: GSW Google Scholar Author and Article Information JERRY A. LINEBACK 1Illinois State Geological Survey, Urbana, Illinois 61801 CAROL I. DELL 2Canada Centre for Inland Waters, Burlington, Ontario L7R 4A6 Canada DAVID L. GROSS 3Illinois State Geological Survey, Urbana, Illinois 61801 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1979) 90 (8): 781–791. https://doi.org/10.1130/0016-7606(1979)90<781:GAPSIL>2.0.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation JERRY A. LINEBACK, CAROL I. DELL, DAVID L. GROSS; Glacial and postglacial sediments in Lakes Superior and Michigan. GSA Bulletin 1979;; 90 (8): 781–791. doi: https://doi.org/10.1130/0016-7606(1979)90<781:GAPSIL>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 The lacustrine sediment sequence above the glacial till under Lake Superior consists of red clays overlain by gray varved clay and nonvarved gray and brown clay. The Lake Michigan sequence also contains red clay at the base and brown and gray clays above. The red clays in Lake Michigan are found in areas overridden by glaciers of Valderan age as well as in the far southern end of the lake. Deposition of red clay took place in the northern part of the lake as the Valderan glaciers were melting and continued during the Algonquin stadial when the ice front reached a stillstand on the northern peninsula of Michigan. Red and gray clay outwash dumped into Lake Superior may also have escaped from the Superior Basin into the Lake Michigan Basin through the Au Train–Whitefish channel and other channels across the upper peninsula of Michigan. The connection of the two lakes began between about 11,000 C14 yr B.P. and ended about 10,000 C14 yr B.P., when the connection was broken by rebound or by lowering of water levels near the end of the glaciation in the Lake Superior Basin. 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.