A New Look at Geochronology in the Upper Great Lakes Region

1963 ◽  
Vol 28 (4) ◽  
pp. 558-559 ◽  
Author(s):  
George I. Quimby
Keyword(s):  
Great Lakes ◽  
Glacial Lake ◽  
Great Lakes Region ◽  
Temporal Position ◽  
Geologic History ◽  
Upper Great Lakes ◽  
Lake Algonquin ◽  
Glacial Lake Algonquin ◽  
New Look

AbstractA revision of Great Lakes geologic history involving the temporal position of Glacial Lake Algonquin and some post-Algonquin lake stages requires corresponding revision of certain archaeological interpretations. Indications are that the Paleo-Indian occupations of the upper Great Lakes area are somewhat earlier than heretofore supposed.

Spits formed in Glacial Lake Algonquin indicate strong easterly winds over the Laurentian Great Lakes during late Pleistocene

2015 ◽  
Vol 55 (1) ◽  
pp. 49-65 ◽  
Author(s):  
Randall J. Schaetzl ◽  
Frank J. Krist ◽  
C. F. Michael Lewis ◽  
Michael D. Luehmann ◽  
Michael J. Michalek
Keyword(s):  
Great Lakes ◽  
Late Pleistocene ◽  
Laurentian Great Lakes ◽  
Glacial Lake ◽  
Lake Algonquin ◽  
Glacial Lake Algonquin

Distribution of Certain Crustaceans and Fishes in the Region of Algonquin Park, Ontario

1965 ◽  
Vol 22 (4) ◽  
pp. 969-976 ◽  
Author(s):  
N. V. Martin ◽  
L. J. Chapman
Keyword(s):  
Great Lakes ◽  
High Altitude ◽  
Glacial Lake ◽  
Mysis Relicta ◽  
High Altitude Lakes ◽  
Lake Algonquin ◽  
Proglacial Lakes ◽  
Limnocalanus Macrurus ◽  
Glacial Lake Algonquin

Senecella calanoides, Limnocalanus macrurus, Mysis relicta, Pontoporeia affinis, and Myoxocephalus quadricornis were found in 63 lakes in the Algonquin Park region of Ontario. Their distribution results from direct coverage by glacial Lake Algonquin, outlet channels from this lake and Nipissing Great Lakes to the Ottawa valley, and inundation by the Champlain Sea. Their occurrence in 12 high-altitude lakes resulted from their transport to these waters by proglacial lakes.

The Cabot Head Archipelago: evidence of glacial Lake Algonquin on the Northern Bruce Peninsula, Ontario

2012 ◽  
Vol 49 (4) ◽  
pp. 576-589 ◽  
Author(s):  
Philip S.G. Kor ◽  
Daryl W. Cowell ◽  
Paul F. Karrow ◽  
F.J. Rik Kristjansson
Keyword(s):  
Great Lakes ◽  
Sea Level ◽  
Glacial Lake ◽  
Main Stage ◽  
Structural Factors ◽  
Lake Levels ◽  
Great Lakes Basin ◽  
Niagara Escarpment ◽  
Lake Algonquin ◽  
Glacial Lake Algonquin

The occurrence of abandoned shoreline bedrock erosional features at the edge of the Niagara Escarpment at Cabot Head indicates the existence of a group of islands in glacial Lake Algonquin during early postglacial time, referred to herein as the Cabot Head Archipelago. The abandoned shoreline features are situated as much as 80 m above the level of contemporary Georgian Bay. The range of abandoned shoreline bedrock erosional features, including shoreline cliffs, adjacent wave-cut platforms, wave-cut notches, shore stacks, shore caves, and other features, are described. The occurrence of these features is thought to be the result of the interaction between wave action in glacial Lake Algonquin and two distinct lithological facies representing the Wiarton – Colpoy Bay and Lions Head members of the Amabel Formation. The exceptional development of the abandoned shoreline bedrock erosional features in massive reefal dolostone between elevations of ∼250 and 255 m above sea level (asl) is interpreted as representing the relatively long-lived and stable Main stage of glacial Lake Algonquin (∼11 000–10 200 years BP). Shoreline erosional forms at elevations between ∼240 and 250 m asl may be indicative of declining lake levels partially controlled by bedrock structural factors. The final abandonment of the glacial Lake Algonquin shoreline in this area occurred when the eastern outlets of the lake became ice-free and its level dropped rapidly some 10 200 years BP. The Cabot Head Archipelago and the associated suite of raised and abandoned shoreline bedrock erosional features represent a rare assemblage of landforms within the Great Lakes basin, and possibly within Canada.

Glacial-Lake Outburst Erosion of the Grand Valley, Michigan, and Impacts on Glacial Lakes in the Lake Michigan Basin

1993 ◽  
Vol 39 (1) ◽  
pp. 36-44 ◽  
Author(s):  
Alan E. Kehew
Keyword(s):  
Lake Level ◽  
Lake Michigan ◽  
Laurentide Ice Sheet ◽  
Glacial Lake ◽  
Michigan Basin ◽  
Lake Agassiz ◽  
Lake Algonquin ◽  
Lake Michigan Lobe ◽  
Possible Cause ◽  
Glacial Lake Algonquin

AbstractGeomorphic and sedimentologic evidence in the Grand Valley, which drained the retreating Saginaw Lobe of the Laurentide Ice Sheet and later acted as a spillway between lakes in the Huron and Erie basins and in the Michigan basin, suggests that at least one drainage event from glacial Lake Saginaw to glacial Lake Chicago was a catastrophic outburst that deeply incised the valley. Analysis of shoreline and outlet geomorphology at the Chicago outlet supports J H Bretz's hypothesis of episodic incision and lake-level change. Shoreline features of each lake level converge to separate outlet sills that decrease in elevation from the oldest to youngest lake phases. This evidence, coupled with the presence of boulder lags and other features consistent with outburst origin, suggests that the outlets were deepened by catastrophic outbursts at least twice. The first incision event is correlated with a linked series of floods that progressed from Huron and Erie basin lakes to glacial Lake Saginaw to glacial Lake Chicago and then to the Mississippi. The second downcutting event occurred after the Two Rivers Advance of the Lake Michigan Lobe. Outbursts from the eastern outlets of glacial Lake Agassiz to glacial Lake Algonquin are a possible cause for this period of downcutting at the Chicago outlets.

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