| Title | Surficial geology of north-central Manitoba |
| Download | Downloads |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Klassen, R W |
| Source | Geological Survey of Canada, Memoir 419, 1986, 63 pages (2 sheets), https://doi.org/10.4095/123656  Open Access |
| Year | 1986 |
| Publisher | Geological Survey of Canada |
| Document | serial |
| Lang. | English |
| Maps | Publication contains 1 map |
| Map Info. | surficial geology, surficial geology, 1:500,000 |
| Projection | Transverse Mercator Projection |
| Media | paper; on-line; digital |
| Related | This publication is contained in A trans-jurisdiction
database of till composition across the Circum-Kisseynew area, Manitoba and Saskatchewan |
| Related | This publication contains Surficial geology, north-central
Manitoba |
| File format | pdf; xls |
| Province | Manitoba |
| NTS | 53B; 53C; 53D; 53E; 53F; 53G; 53J; 53K; 53L; 53M; 53N; 53O; 54B; 54C; 54D; 54E; 54F; 54G; 54J; 54K; 54L; 54M; 54N; 54O; 63A; 63B; 63C; 63F; 63G; 63H; 63J; 63I; 63K; 63N; 63O; 63P; 64A; 64B; 64C; 64F; 64G;
64H; 64I; 64J; 64K; 64N; 64O; 64P |
| Area | Canadian Shield; Hudson Bay Lowlands |
| Lat/Long WENS | -102.0000 -90.0000 60.0000 52.0000 |
| Subjects | paleontology; geochronology; stratigraphy; surficial geology/geomorphology; glacial deposits; glaciation; tills; wisconsinian glacial stage; deglaciation; glaciolacustrine deposits; glaciofluvial
deposits; lacustrine deposits; alluvial deposits; marine deposits; peat; stratigraphic correlations; permafrost; pleistocene; radiocarbon dates; fossils; moraines; Churchill River Group; Tyrrell Sea; Glacial Lake Agassiz; Missinaibi Formation; Moose
River Basin; Wigham Creek Formation; Amery Formation; Pollen; Quaternary; Cenozoic; Precambrian |
| Released | 1987 01 01; 2012 11 13 |
| Abstract | The study area is largely within the Precambrian Shield but includes part of Hudson Bay Lowland and Manitoba Plain. Boreal forest masks and is interspersed with wetlands that cover most of the nearly
flat, to gently hilly, drift veneered bedrock. A record of glaciations is preserved in the thick drift of Hudson Bay Lowland. The oldest till (Amery Formation) underlies intertill sediments rich in pollen (Gods River sediments) that are correlated
with the interglacial (Sangamonian?) Missinaibi Formation of the Moose River Basin, Ontario. Three tills and intertill sediments (Wigwam Creek Formation) overlying the Gods River sediments are considered to be deposits of Wisconsinan stades and
interstades. Final deglaciation began in the southwest part of the region about 9500 years ago and ended about 7500 years ago when the Tyrrell Sea covered the Lowland. Lake Agassiz inundated essentially all parts of the region during various phases
of deglaciation and was finally drained when it breached the glacial ice dam shortly before the sea entered the northwestern part of Hudson Bay Lowland. Glaciolacustrine clay and silt blanket much of the former main basin of Lake Agassiz. Patchy
veneers of clay and silt on the till plains to the northeast and east of the main basin were also deposited in Lake Agassiz, although some lacustrine sediments are postglacial deposits. A prominent system of kame moraines (Burntwood-Etawney) formed
between and along the Keewatin ice lobe over the western part of the region and the Hudson lobe over the eastern part. Bog and fen began developing over northern Manitoba about 6500 years ago. |
| GEOSCAN ID | 123656 |
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