| Title | A chemostratigraphic characterization of Newmarket Till in drill core from north of Lake Ontario |
| Download | Download (whole publication) |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Stepner, D A J; Kjarsgaard, B A ; Knight, R A; Russell, H A J; Sharpe, D R |
| Source | Southern Ontario groundwater project 2014-2019: summary report; by Russell, H A J (ed.); Kjarsgaard, B A (ed.); Geological Survey of Canada, Open File 8536, 2020 p. 109-119, https://doi.org/10.4095/321097
 Open Access |
| Year | 2020 |
| Publisher | Natural Resources Canada |
| Document | open file |
| Lang. | English |
| Media | on-line; digital |
| Related | This publication is contained in Southern Ontario
groundwater project 2014-2019: summary report |
| File format | pdf |
| Province | Ontario |
| NTS | 30M/11; 30M/14; 30M/15; 31D/02; 31D/03; 31D/04; 31D/05; 31D/06; 31D/07; 31D/11; 31D/12; 31D/13; 31D/14 |
| Area | Lake Ontario; Toronto; Lake Simcoe |
| Lat/Long WENS | -80.0000 -78.5000 45.0000 43.5000 |
| Subjects | surficial geology/geomorphology; geochemistry; stratigraphy; Nature and Environment; Science and Technology; till geochemistry; till stratigraphy; stratigraphic analyses; stratigraphic correlations;
glacial deposits; glacial features; tills; sands; geochemical analyses; glacial history; glaciation; ice flow; depositional history; boreholes; core samples; x-ray fluorescence analyses; spectrometric analyses; trace element analyses; grain size
analyses; provenance; Newmarket Till; St. Lawrence Lowlands; Canadian Shield; ice-flow directions; Trends; Phanerozoic; Cenozoic; Quaternary |
| Illustrations | geoscientific sketch maps; correlation sections; tables; plots; profiles; lithologic sections |
| Program | Groundwater Geoscience Aquifer Assessment & support to mapping |
| Program | Oak Ridges Moraine NATMAP Project |
| Released | 2020 05 28 |
| Abstract | The Newmarket Till (NT) covers much of the south-central Ontario forming a regional stratigraphic marker. Geochemical analysis was performed using aqua regia, four-acid, and flux-fusion digestion on 137
samples of NT collected from 8 boreholes across two regional transects to quantify potential geochemical variations through the till. The geochemistry of the <63 ?m size fraction exhibits strong elemental correlations between major and trace element
contents and CaO. All major elements exhibit negative correlations with CaO contents indicative of the incorporation of Paleozoic carbonates flooring the southern Ontario Basin. A chemical ratio of CaO+MgO/SiO2+Al2O3 (Provenance Indicator) suggest
significant quantities of material from the Paleozoic carbonates were incorporated into the till matrix as ice moved south of the Canadian Shield. High precision sampling using portable XRF methods for a continuous sediment core located near
Pickering Ontario, allowed for the identification of 4 geochemical subfacies unidentifiable on the macro scale along with 3 interbeds. These geochemical subunits in the NT cannot be traced to nearby boreholes and hence do not have regional extent.
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| Summary | (Plain Language Summary, not published)
Collection of papers on work completed in the past five years as part of the southern Ontario Groundwater Project. This edited volume is a collection of
currently unreported work. |
| GEOSCAN ID | 321097 |
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