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TitleMineralogy, geochemistry, grain size and pebble componentry of the Newmarket Till and the Dummer Moraines in the Kaladar-Tweed-Belleville area of eastern Ontario
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LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorKjarsgaard, B AORCID logo; Sharpe, D RORCID logo; Stepner, D A J; Knight, R AORCID logo; Russell, H A JORCID logo
SourceSouthern Ontario groundwater project 2014-2019: summary report; by Russell, H A JORCID logo (ed.); Kjarsgaard, B AORCID logo (ed.); Geological Survey of Canada, Open File 8536, 2020 p. 121-129, Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
RelatedThis publication is contained in Southern Ontario groundwater project 2014-2019: summary report
File formatpdf
NTS30M/14; 31C/02; 31C/03; 31C/06; 31C/07; 31C/10; 31C/11
AreaKaladar; Tweed; Belleville
Lat/Long WENS -77.5000 -76.5000 44.7500 44.0000
Lat/Long WENS -79.5000 -79.0000 44.0000 43.7500
Subjectssurficial 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
Illustrationsgeoscientific sketch maps; ternary diagrams; plots; profiles
ProgramGroundwater Geoscience Aquifer Assessment & support to mapping
ProgramOak Ridges Moraine NATMAP Project
Released2020 05 28
AbstractDownflow 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.

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