Agency Geological Survey of Canada Metadata Title Regional 3-D Structural Model of the Oak Ridges Moraine and Greater Toronto Area, southern Ontario: Version 2.0 Open File no. 4957 Theme Digital Structural Model Project Oak Ridges Moraine NATMAP and Hydrogeology Project GSC project no. GW4200 J03 Digital title Logan, C., Russell, H.A.J., and Sharpe, D.R., 2005: Regional 3-D Structural Model of the Oak Ridges Moraine and Greater Toronto Area, southern Ontario: Version 2.0; Geological Survey of Canada, Open File 4957, 1 CD-ROM. Release date 1 August 2005 Derived from 1. ORM NATMAP database (see Russell, H.A.J., Logan, C., Brennand, T.A., Hinton, M., and Sharpe, D.R., 1996, A regional geoscience database: An example from the Oak Ridges Moraine NATMAP / Hydrogeology Project: Current Research, 1996-E, Geological Survey of Canada, p. 191-200.)
2. Surficial geology of the Greater Toronto and Oak Ridges Moraine area, southern Ontario: Geological Survey of Canada, Open File 3062.
3. Digital Elevation Model of the Greater Toronto Area, Southern Ontario and Lake Ontario Bathymetry; Geological Survey of Canada Open File 3678
4. Logan, C., Russell, H.A.J., and Sharpe, D.R., 2001: Regional three-dimensional stratigraphic modelling of the Oak Ridges Moraine area, southern Ontario; Geological Survey of Canada, Current Research 2001-D01, 19 p. Digital Lineage Previous release of bedrock topography as: Russell, H.A.J, and Stacey, P., (compilers) 2001: Bedrock Topography and Sediment Thickness DEMs of the Greater Toronto and Oak Ridges Moraine Areas, Southern Ontario; Geological Survey of Canada, Open File 3699, 1 October, 2001. Previous release of structural model as: Logan, C., Sharpe, D.R., and Russell, H.A.J. 2002: Regional 3D Structural Model of the Oak Ridges Moraine and Greater Toronto Area, southern Ontario: Version 1.0; Geological Survey of Canada, Open File 4329, 1 CD-ROM. Original NA Hardcopy title
Description 3D structural model Geographic Greater Toronto Area, Southern Ontario area NTS coverage Hamilton (30M/5), Toronto (30M11), Brampton (30M/12), Bolton (30 M/13), Markham (30M/14), Oshawa (30M/15), Port Hope (30M/16), Alliston (31D/4), Newmarket (31D/3), Scugog (31D/2), Rice Lake (31D/1), Guelph (40P/9), Beaverton (31D/6), Orangeville (40P/16). Trenton (31C/4) Abstract The files contained on this CD-ROM comprise the version 2.0 digital release of the Oak Ridges Moraine (ORM) regional structural model. The model was developed under the Geologcial Survey of Canada’s NATMAP (National Mapping Program) and Groundwater Program in collaboration with partner agencies (e.g., Ontario Geological Survey, Ontario Ministry of the Environment, Ontario Ministry of Natural Resources, Conservation Authorities Moraine Coalition). The model consists of a series of gridded surfaces that define the top and bottom of 5 Quaternary stratigraphic units plus bedrock surface. The modelled units are, stratigraphically from oldest to youngest: 1) Paleozoic bedrock, 2) Lower sediment, 3) Newmarket Till, 4) ORM sediment, 5) Halton Till, and 6) Glaciolacustrine and Recent sediment. Each unit has a companion confidence map that is based on the proximity to, and relative quality of data control points that were used to interpolate its surface. Surfaces were produced using Natural Neighbour interpolations in MapInfo Professional with Vertical Mapper. Database management, data analysis and programming were completed using Microsoft Access 2000 and Visual Basic for Applications. Surfaces and confidence maps are viewable with MapInfo Proviewer included with this release for convenience. For viewing the surfaces in other GIS software, including ArcInfo, a standard ASCII grid version of each file is also provided.
Keywords structural model, Oak Ridges Moraine, Greater Toronto Area, Ontario, stratigraphy File format Vertical Mapper - MapInfo format (in self-extracting, WinZip® 7.0 compressed format)
Generic ASCII grid format (in self-extracting, WinZip® 7.0 compressed format) Location on CD Data\
X Max: -77.7230 Xmax = 760,560
Y Min: 43.2409 Ymin = 4,792,570 Y Max: 44.5304 Ymax = 4,931,110
Z Min: 30
Z Max: 491 Grid dimensions 6150 x 4550 (approx.) (Vertical Mapper - MapInfo format) File size: 60 MB (approx.) each (Vertical Mapper - MapInfo format) 170 MB (approx.) each (ASCII grid format) Projection Universal Transverse Mercator (UTM), Zone 17 Spheroid GRS 1980 Datum North American Datum (NAD) 83 Original scale NA Cell size (m) 30 Data type elevation Type of units meters Number of units NA Unit names NA Base source NA Base data none Base data none included Location on CD The disc is organized into one main directory, with a number of subdirectories Disk Access The disc is compatible with Windows NT/2000/XP, MS-DOS operating systems equipped with the appropriate CD-ROM reader and software. Currentness publication date: 1 August 2005 Reference Maintenance No planned update and Update Frequency Contact Person Charles Logan Telephone: (613) 947-7068
Geological Survey of Canada Facsimile: (613) 947-0190
Terrain Sciences Division GIS e-mail: [email protected] coordinator
601 Booth Street
Ottawa, Ontario
K1A 0E8
Canada Metadata Date 1 August 2005 Metadata [email protected] Contact Distribution These data have been processed successfully on a computer system at the Geological Liability Survey of Canada, Natural Resources Canada, no warranty expressed or implied is made by the Geological Survey regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty.
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