| Title | Mineralogy, geochemistry, grain size and pebble componentry of the Newmarket Till and the Dummer Moraines in the Kaladar-Tweed-Belleville area of eastern Ontario |
| Download | Download (whole publication) |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Kjarsgaard, B A ;
Sharpe, D R; Stepner, D A J; Knight, R A; Russell, H A J |
| 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. 121-129, https://doi.org/10.4095/321096
 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/14; 31C/02; 31C/03; 31C/06; 31C/07; 31C/10; 31C/11 |
| Area | Kaladar; Tweed; Belleville |
| Lat/Long WENS | -77.5000 -76.5000 44.7500 44.0000 |
| Lat/Long WENS | -79.5000 -79.0000 44.0000 43.7500 |
| Subjects | surficial geology/geomorphology; geochemistry; mineralogy; Nature and Environment; Science and Technology; sediment geochemistry; glacial deposits; glacial landforms; glacial features; tills; moraines;
mineralogical analyses; geochemical analyses; grain size analyses; pebble lithology; provenance; glacial history; glaciation; ice flow; bedrock geology; lithology; Newmarket Till; Dummer Moraines; St. Lawrence Lowlands; Canadian Shield; Gull River
Formation; Bobcaygeon Formation; Verulam Formation; Lindsay Formation; ice-flow directions; Phanerozoic; Cenozoic; Quaternary |
| Illustrations | geoscientific sketch maps; ternary diagrams; plots; profiles |
| Program | Groundwater Geoscience Aquifer Assessment & support to mapping |
| Program | Oak Ridges Moraine NATMAP Project |
| Released | 2020 05 28 |
| Abstract | Downflow glacial dispersal was investigated across the southern Ontario Canadian Shield-Paleozoic boundary along two detailed transects with surficial sediment sampling, sub-parallel to the dominant
NNE-SSW transport direction. The transects started on the Shield, transited the Shield-Paleozoic boundary and extended into the Paleozoic basin, with the target sediments being the Newmarket Till and the Dummer Moraines. Geochemistry and mineralogy
analyses of the clay + silt (<0.063 mm) size fraction, and pebble componentry provide the data required to elucidate the provenance of these two glaciogenic sediment formations, and their potential relationship to each other. Till thickness increases
from <2 m (on the Shield) to >=10 m (on the Paleozoic basin) within 1 km south of the Shield-Paleozoic boundary. The Newmarket Till and Dummer Moraines both consist of carbonate-rich glaciogenic sediments, resultant from source material input
dominated by limestone, shaly limestone and dolostone of the Paleozoic Gull River, Bobcaygeon and Verulam formations. Based on data from this study (matrix mineralogy and geochemistry, pebble componentry), we conclude that the Dummer Moraines are
best termed as pebble-, cobble-, boulder-rich facies equivalents of the Newmarket Till. This study highlights the rapid transition in till matrix and clast content when transitioning from hard Canadian Shield lithologies to Paleozoic carbonate rocks
and complexities along different glacial flowlines. |
| 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 | 321096 |
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