Laurentide glacial landscapes: The role of ice streams

Research Article| July 01, 1998 Laurentide glacial landscapes: The role of ice streams Carrie J. Patterson Carrie J. Patterson 1Minnesota Geological Survey, 2642 University Ave., St. Paul, Minnesota 55114 Search for other works by this author on: GSW Google Scholar Author and Article Information Carrie J. Patterson 1Minnesota Geological Survey, 2642 University Ave., St. Paul, Minnesota 55114 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1998) 26 (7): 643–646. https://doi.org/10.1130/0091-7613(1998)026<0643:LGLTRO>2.3.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 Carrie J. Patterson; Laurentide glacial landscapes: The role of ice streams. Geology 1998;; 26 (7): 643–646. doi: https://doi.org/10.1130/0091-7613(1998)026<0643:LGLTRO>2.3.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 Glacial landforms of the North American prairie can be divided into two suites that result from different styles of ice flow: (1) a lowland suite of level-to-streamlined till consistent with formation beneath ice streams, and (2) an upland and lobe-margin suite of thick, hummocky till and glacial thrust blocks consistent with formation at ice-stream and ice-lobe margins. Southern Laurentide ice lobes hypothetically functioned as outlets of ice streams. Broad branching lowlands bounded by escarpments mark the stable positions of the ice streams that fed the lobes. If the lobes and ice streams were similar to modern ice streams, their fast flow was facilitated by high subglacial water pressure. Favorable geology and topography in the midcontinent encouraged nonuniform ice flow and controlled the location of ice streams and outlet lobes. 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.