Session: From Hudson Bay to the Coastal Plain: Comparisons of Pre-LGM (Last Glacial Maximum) Quaternary Records in Glaciated and Unglaciated North America I (GSA 2020 Connects Online)

Session No. 56

Tuesday, 27 October 2020: 10:00 AM-12:00 PM

T145. From Hudson Bay to the Coastal Plain: Comparisons of Pre-LGM (Last Glacial Maximum) Quaternary Records in Glaciated and Unglaciated North America I

GSA Quaternary Geology and Geomorphology Division

David A. Grimley, Kathleen M. Farrell and Riley P.M. Mulligan, Advocates

Paper #

Start Time

56-1

10:00 AM

CHRONOLOGY AND HYDROLOGY OF THE BIG LOST RIVER OUTBURST FLOODS AND THE GHOSTS OF MIS 3 GLACIATION IN EAST-CENTRAL IDAHO

WARNER, Braedon and THACKRAY, Glenn D., Department of Geosciences, Idaho State University, 921 S 8th Avenue, Pocatello, ID 83209

56-2

10:15 AM

UNDERSTANDING THE COASTAL RESPONSE TO LATE PLEISTOCENE RELATIVE SEA-LEVEL CHANGES IN NORTH CAROLINA, USA: AN ANALOG FOR FUTURE COASTAL EVOLUTION (Invited Presentation)

MALLINSON, David J.¹, CULVER, Stephen J.¹, LEORRI, Eduardo¹, DEWITT, Regina², GUDMUNSON, Erik¹, SNYDER, Kelli¹ and CRESSMAN, Amy W.¹, (1)Department of Geological Sciences, East Carolina University, 101 Graham Building, Greenville, NC 27858, (2)Physics, East Carolina University, Howell Science Complex, Rm C-209 1000 E. 5th Street Greenville, NC 27858, Greenville, NC 27858

56-3

10:30 AM

LEGACY RADIOCARBON AGES AND THE MIS 3 DATING GAME: A CAUTIONARY TALE FROM RE-DATING OF PRE-LGM SITES IN WESTERN CANADA

REYES, Alberto V.¹, DILLMAN, Tenea¹, KENNEDY, Kristen², FROESE, Duane³, BEAUDOIN, Alwynne B.⁴ and PAULEN, Roger C.⁵, (1)Earth and Atmospheric Sciences, University of Alberta, 1-26 Earth Sciences Building, Department of Earth & Atmospheric Sciences, Edmonton, AB T6G2E3, Canada, (2)Yukon Geological Survey, Whitehorse, YT Y1A 2B5, Canada, (3)Earth and Atmospheric Sciences, University of Alberta, 3-029 Centennial Centre for Interdisciplinary Science, Edmonton, AB T6G 2E3, Canada, (4)Royal Alberta Museum, 9810 103A Ave NW, Edmonton, AB T5J 0G2, Canada, (5)Geological Survey of Canada, Ottawa, 601 Booth St, Ottawa, ON K1A 0E8, Canada

56-4

10:45 AM

THE DIVERSION OF GLACIAL MELTWATER FROM THE EASTERN ST. LAWRENCE RIVER OUTLET INTO THE OHIO RIVER BASIN BY AN MIS 3 ADVANCE OF THE LAURENTIDE ICE SHEET: EVIDENCE FROM RAPIDLY AGGRADED OUTWASH AND SLACKWATER LAKE DEPOSITS IN THE LOWER OHIO RIVER VALLEY (Invited Presentation)

COUNTS, Ronald C., Mississippi Mineral Resources Institute/Dept. of Geology and Geological Engineering, University of Mississippi, Brevard Hall, Oxford, MS 38677

56-5

11:00 AM

PRE-LATE WISCONSINAN EVENTS, STRATIGRAPHY, AND CHRONOLOGY IN SOUTHERN ONTARIO

MULLIGAN, Riley P.M.¹, BAJC, Andy F.² and BURT, Abigail K.¹, (1)Ontario Geological Survey, 933 Ramsey Lake Road, Sudbury, ON P3E 6B5, Canada, (2)Retired, 1937 Bushy Bay Road, Wahnapitae, ON P0M3CO, Canada; Ontario Geological Survey, 933 Ramsey Lake Road, Sudbury, ON P3E 6B5, Canada

56-6

11:15 AM

INDIRECT EVIDENCE FOR THE SOUTHERN LAURENTIDE ICE MARGIN POSITION DURING MARINE ISOTOPE STAGE 3, FROM PROGLACIAL SEDIMENTS IN ILLINOIS AND INDIANA, USA

GRIMLEY, David A.¹, PHILLIPS, Andrew C.¹, CURRY, B. Brandon¹, LOOPE, Henry M.² and ANTINAO, José Luis², (1)Illinois State Geological Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, 615 E Peabody Dr., Champaign, IL 61820, (2)Indiana Geological and Water Survey, Indiana University, 611 North Walnut Grove Ave., Bloomington, IN 47405

56-7

11:30 AM

MIS-3 FLUVIAL AND MARINE SEDIMENTS IN THE CENTRAL ST-LAWRENCE LOWLANDS- IMPLICATIONS FOR GLACIAL AND DEGLACIAL EVENTS IN THE APPALACHIAN UPLANDS (Invited Presentation)

PARENT, Michel, Geological Survey of Canada, 490, rue de la Couronne, Quebec, QC G1K 9A9, Canada

11:45 AM

Discussion

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