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TitleRegional three-dimensional stratigraphic modelling of the Oak Ridges Moraine area, southern Ontario
AuthorLogan, C; Russell, H A J; Sharpe, D R
SourceGeological Survey of Canada, Current Research (Online) no. 2001-D1, 2001, 30 pages, (Open Access)
LinksOak Ridges Moraine web site
LinksMoraine d'Oak Ridges, site web
PublisherNatural Resources Canada
Mediapaper; on-line; digital; CD-ROM
RelatedThis publication is contained in Geological Survey of Canada; (2001). Current Research 2001, winter release, Geological Survey of Canada, Current Research no. 2001
File formatpdf
NTS30M/05; 30M/12; 30M/13; 30M/14; 30M/15; 31D/01; 31D/02; 31D/03; 31D/04; 31D/05; 31D/06; 31C/04; 40P/08; 40P/09; 40P/16; 41A/01; 41A/08
AreaToronto; Mississauga
Lat/Long WENS-80.5000 -77.5000 44.5000 43.2500
Subjectssurficial geology/geomorphology; stratigraphy; mathematical and computational geology; hydrogeology; stratigraphic models; stratigraphic correlations; ground moraine deposits; groundwater regimes; data collections; water wells; glacial deposits; boreholes; Oak Ridges Moraine; Halton Till; Newmarket Till; sediment thickness; 3-D modelling; Quaternary
Illustrationssketch maps; schematic diagrams; cross-sections; tables; block diagrams; models
ProgramOak Ridges Moraine NATMAP Project
Released2001 01 01
AbstractGeological and hydrogeological investigations of the Oak Ridges Moraine and Greater Toronto Area have been used to develop a regional stratigraphic framework. This framework is used to develop a data-driven stratigraphic model by integrating new field data with archival data in a relational database. A multistep approach is used that involves i) manual stratigraphic interpretation of subsurface data, ii) interpretation and integration of Ministry of Environment water-well data to refine elevation variability, iii) generation of individual stratigraphic surfaces that integrate geological map boundaries, and iv) generation of semiquantitative confidence maps. The structural ele- vation surfaces can be used to produce sediment-thickness maps and rendered three-dimensional volumes, and to constrain hydrogeological modelling. Municipalities, conservation authorities, and other agencies can use this stratigraphic model to provide a regional context and to improve the hydrogeological understanding of site-specific investigations.