...Donya C. Danesh; Francine M.G. McCarthy; Olena Volik; Matea Drljepan Abstract The distribution of non-pollen palynomorphs (NPP) in a core from Cook’s Bay, Lake Simcoe, Ontario, Canada shows a response to changes in water quality accompanying agriculture, urbanization, and industrialization. Low...

...Jonathan L Grimwood; Mario Coniglio; Derek K Armstrong Abstract The lowest Upper Ordovician (Blackriveran) strata in the Lake Simcoe area represent the base of a major transgressive sequence of peritidal carbonates and siliciclastics. From detailed petrographic study of 12 cores that penetrate...

... themselves to various habitats and conditions. Chazy rocks in the Lake Champlain area, New York, Trenton deposits outcropping in the Trenton region, New York, Black River section in its type section at Black River, New York, and the Simcoe Group in Lake Simcoe, Ontario, are studied and sampled...

... this lowermost till in early to mid-Wisconsinan time or earlier.The Harricana – Lake McConnell glaciofluvial system extends from James Bay to the vicinity of North Bay Ontario and probably continues farther south to the Lake Simcoe area. It is strictly an interlobate deglaciation feature and does not result from...

... mentioned in palynological studies, however, except to illustrate fluvial transport to nearshore marine settings. A diverse desmid flora was found in samples processed without acetolysis from Smith's Bay in Lake Simcoe, and desmid and thecamoebian (testate amoeba) assemblage changes record eutrophication up...

...David F. Wright; Selina R. Cole; William I. Ausich Abstract Upper Ordovician (Katian) strata of the Lake Simcoe region of Ontario record a spectacularly diverse and abundant echinoderm fauna known as the Brechin Lagerstätte. Despite recognition as the most taxonomically diverse Katian crinoid...

...Figure 1. Location map with position of various quarries in the Lake Simcoe region of southern Ontario from which crinoids of the Brechin Lagerstätte are known: ( 1 ) southern Ontario with study area in box; ( 2 ) relative position of collection sites (stars) within the study area. Modified from...

...Selina R. Cole; William I. Ausich; David F. Wright; Joseph M. Koniecki Abstract The Upper Ordovician (lower Katian) Bobcaygeon and Verulam formations from the Lake Simcoe region of Ontario contain a highly diverse echinoderm assemblage that is herein recognized as a Konservat-Lagerstätte. Although...

...William A. Hessin Abstract Four cheirurine trilobite species belonging to three closely related genera are described from the Middle Ordovician Bobcaygeon Formation (Rocklandian–Kirkfieldian) of the Lake Simcoe area in south-central Ontario. Bufoceraurus is a new genus characterized by its large...

... paleovegetation, and macrofossils analysis served to establish the history of the vegetation at the field site. The data showed that in the vicinity of Lake Simcoe the origin of the marsh was closely associated with the changes in the climatic conditions that favored the development of an environment suitable...

...Bruce H. Wilkinson; Susanne U. Janecke; Carlton E. Brett Abstract Middle Ordovician (Trentonian) biosparites from the Bobcaygeon and Verulam formations near Lake Simcoe, Ontario, exhibit numerous features demonstrating lithification near the sediment/water interface. These include planar erosion...

... primigenius . The age of these specimens is estimated at 40 000–50 000 years BP, within the mid-Wisconsin, Port Talbot Interstadial. The only other recognized Canadian record of a grizzly bear east of Manitoba is from a gravel sequence at Barrie, near Lake Simcoe, Ontario, dated from a bone fragment to 11 700...