| Title | A three-dimensional surficial geology model of southern Ontario: progress report |
| Download | Download (whole publication) |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Logan, C E ;
Russell, H A J; Bajc, A F; Burt, A; Mulligan, R P M; 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. 49-64, https://doi.org/10.4095/321084  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 | 30; 31C; 31D; 40; 41A; 41G; 41H |
| Area | Niagara Escarpment; Great Lakes; Lake Ontario; Lake Erie; Lake Huron; Georgian Bay; Bruce Peninsula; Lake Simcoe |
| Lat/Long WENS | -83.5000 -76.0000 45.3333 41.5000 |
| Subjects | surficial geology/geomorphology; stratigraphy; hydrogeology; geophysics; Nature and Environment; Science and Technology; modelling; models; stratigraphic analyses; sediments; postglacial deposits;
organic deposits; glacial deposits; tills; muds; sands; software; boreholes; oil wells; gas wells; bathymetry; bedrock geology; bedrock topography; geophysical logging; core samples; geophysical interpretations; groundwater; groundwater flow; buried
valleys; glacial history; Wisconsinian glacial stage; Illinoian glacial stage; Pleistocene; Holocene; Oak Ridges Moraine; Orangeville Moraine; Waterloo Moraine; Oro Moraine; Alliston Basin; Essex Clay Plain; Holland Marsh Tunnel Channel; Leapfrog®
Works; Kempenfelt Bay Channel; Laurentian Trough; Digital elevation data; Quality control; Databases; Geographic data; Geographic information systems; glaciofluvial sediments; glaciolacustrine sediments; Data processing; Phanerozoic; Cenozoic;
Quaternary |
| Illustrations | geoscientific sketch maps; stratigraphic charts; schematic cross-sections; tables |
| Program | Groundwater Geoscience Aquifer Assessment & support to mapping |
| Released | 2020 05 28 |
| Abstract | A 3-D model consisting of 7 surficial geology layers overlying bedrock for 66,870 km2 of southern Ontario has been constructed. Model development involved the assembly of a comprehensive subsurface
database that includes archival water well and geotechnical material logs, cored boreholes, and stratigraphically interpreted geophysical data. Other geospatial constraints are derived from topographic Digital Elevation Models (DEM), bathymetric DEMs
and depth soundings, a bedrock surface DEM, and seamless surficial geology mapping. Existing sub-regional (<10,000 km2) higher resolution 3-D models were used to support the model development. The surficial geological legend provided the basis for a
simplified stratigraphic layer structure (from oldest to youngest): 1-Bedrock, 2-Lower Sediment, 3-Regional Till, 4-Glaciofluvial Sediment, 5-Upper Till, 6-Glaciolacustrine Mud, 7-Glaciolacustrine Sand, and 8-Recent/Organic Sediment. A preliminary
model based on high-quality interpreted data was used along with surficial geological mapping and expert knowledge in a rules-based algorithm to help assign stratigraphic coding to the widespread, archival material log data. An iterative cycle of
automated coding, manual coding, periodic interim model inspection and revision has led to this 3-D surficial geological model. This model supports regional-scale groundwater flow modelling and, along with a companion model of bedrock geology, will
comprise the first complete 3-D model coverage of southern Ontario from the Precambrian basement to post-glacial sediment. |
| 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 | 321084 |
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