Metadata: 3D hydrostatigraphic model of the Oak Ridges Moraine and Greater Toronto Area

Metadata NAP : more info

Identification

Abstract

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 (B/R), 2) Lower sediment (LS), 3) Newmarket Till (NT), 4) Oak Ridges Moraine and channel sediment (OMR), 5) Halton Till (HT), and 6) Glaciolacustrine and Recent sediment (GL/R).
Status:register completed
Title3D hydrostatigraphic model of the Oak Ridges Moraine and Greater Toronto Area
Date2005-12-01 (register publication)
Date2005-12-01 (register creation)
Edition
Edition date
Citation group
register pointOfContact
Name
OrganisationGovernment of Canada; Natural Resources Canada; Geological Survey of Canada
Position
Information
AddressDelivery point :
City :
Administrative region :
Postal code :
Country :
Email nrcan.gsc-geosciencedata-donneesgeoscience-cgc.rncan@canada.ca
Telephone
Online Resource
Citation group
register principalInvestigator
NameCharles Logan
OrganisationGovernment of Canada; Natural Resources Canada; Geological Survey of Canada - GSC Central Canada
PositionGIS Specialist
Information
AddressDelivery point : 601 Booth Street 601 Booth Street
City : Ottawa Ottawa
Administrative region : Ontario Ontario
Postal code :
Country : Canada Canada
Email charles.logan@canada.ca
Telephonetelephone voice; 1 (613) 9477068
Online Resource
Citation group
register originator
NameCharles Logan
OrganisationGovernment of Canada; Natural Resources Canada; Geological Survey of Canada - GSC Central Canada
PositionGIS Specialist
Information
AddressDelivery point : 601 Booth Street 601 Booth Street
City : Ottawa Ottawa
Administrative region : Ontario Ontario
Postal code :
Country : Canada Canada
Email charles.logan@canada.ca
Telephonetelephone voice; 1 (613) 9477068
Online Resource
Citation group
register custodian
NameFrancois Letourneau
OrganisationGovernment of Canada; Natural Resources Canada; Geological Survey of Canada - GSC Quebec
Position
Information
AddressDelivery point : 490, rue de la Couronne, 3e étage 490, rue de la Couronne, 3e étage
City : Québec Québec
Administrative region : Québec Québec
Postal code :
Country : Canada Canada
Email francois.letourneau@canada.ca
Telephonetelephone voice; 1 (418) 6543826
Online Resource
Presentation formregister modelDigital
SeriesOpen File5062

Related publication

  • 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 2.1; Geological Survey of Canada, Open File 5062, 1 CD-ROM.

Goals

A central focus of the joint Geological Survey of Canada / Ontario Geological Survey Oak Ridges Mo-raine (ORM) Project was to update the Quaternary geological map coverage of the Greater Toronto Area (GTA) and construct a 3-D geological model of the strata. The updated mapping and 3-D model along with numerous publications detailing aspects of the conceptual geological understanding were intended to provide regional context for more detailed, site-specific studies.

Keyword(s)

Thesaurus
TitleGovernment of Canada Core Subject Thesaurus
Date2004 (register creation)
Date2013-05-11 (register publication)
Edition
Edition date
Citation group
register custodian
Name
OrganisationGovernment of Canada; Library and Archives Canada
Position
Information
Typeregister
TermHydrogeology
Thesaurus
TitleNRCan - GSC - Hydrogeology - Thesaurus
Date2009-01-01 (register creation)
Edition
Edition date
Citation group
register pointOfContact
Name
OrganisationCommission Géologique du Canada - Geological Survey of Canada
Position
Information
Typeregister thème
TermGroundwater
Thesaurus
TitleNRCan - GSC - Hydrogeology - Thesaurus
Date2009-01-01 (register creation)
Edition
Edition date
Citation group
register pointOfContact
Name
OrganisationCommission Géologique du Canada - Geological Survey of Canada
Position
Information
Typeregister produit
Term3D Model
Thesaurus
TitleNRCan - GSC - Hydrogeology - Thesaurus
Date2009-01-01 (register creation)
Edition
Edition date
Citation group
register pointOfContact
Name
OrganisationCommission Géologique du Canada - Geological Survey of Canada
Position
Information
Typeregister endroit
TermGreater Toronto Area
Thesaurus
TitleNRCan - GSC - Hydrogeology - Thesaurus
Date2009-01-01 (register creation)
Edition
Edition date
Citation group
register pointOfContact
Name
OrganisationCommission Géologique du Canada - Geological Survey of Canada
Position
Information
Typeregister thème
TermAquifer
Thesaurus
TitleNRCan - GSC - Hydrogeology - Thesaurus
Date2009-01-01 (register creation)
Edition
Edition date
Citation group
register pointOfContact
Name
OrganisationCommission Géologique du Canada - Geological Survey of Canada
Position
Information
Typeregister thème
TermQuaternary
Spatial representationregister grid
Resolution
Languageeng; CAN
Character encodingutf8
Thematic categorygeoscientificInformation
ExtentLocalisation
-80.165400000,43.240900000;-77.723000000,44.530400000
Supplemental informationEach 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.

Distribution

Specific information related to data distribution
Format
NameASCII GRID
Versionnot applicable

Distributor

Contact
register pointOfContact
Name
OrganisationGovernment of Canada; Natural Resources Canada; Geological Survey of Canada
Position
Information
AddressDelivery point :
City :
Administrative region :
Postal code :
Country :
Email nrcan.gsc-geosciencedata-donneesgeoscience-cgc.rncan@canada.ca
Telephone
Online Resource

Distributor

Contact
register distributor
NameEric Boisvert
OrganisationGovernment of Canada; Natural Resources Canada; Geological Survey of Canada - GSC Quebec
Position
Information
AddressDelivery point : 490, rue de la Couronne, 3e étage 490, rue de la Couronne, 3e étage
City : Québec Québec
Administrative region : Québec Québec
Postal code :
Country : Canada Canada
Email eric.boisvert2@canada.ca
Telephonetelephone voice; 1 (418) 6543705
Online Resource

Transfer options


Quality


Quality description scope :register dataset

Lineage

Message Date lineage
Lineage is the description of the sources and steps used to create the current dataset.


Introduction
Process step Sources
The 3-D model is a rendering of the Quaternary sediment that comprises the complex aquifer/aquitard complex of the Oak Ridges Moraine and Greater Toronto Area, southern Ontario. The Quaternary sediment in this study area is categorized into 5 stratigraphic units. From oldest to youngest these units are: 1) Lower sediment (LS) The LS unit is actually a grouping of several pre-Late Wisconsinan formations. 2) Newmarket Till (NT) Dense stony silty sandy diamicton. This till sheet is 5-30 m thick. The till is a reliable regional subsurface marker horizon. 3) Oak Ridges Moraine and channel sediment (ORM) The ORM is an extensive stratified deposit, ~160 km long, 5-15 km wide and of variable thickness. ORM ridges formed during a rapidly deposited sequence of high-energy, west-flowing meltwater events. Subglacial. 4) Halton Till (HT) Halton sedimentary architecture and facies are interpreted as deposition in an ice-marginal or subglacial lake bounded by Niagara Escarpment, ORM, and grounding line. Large volumes of transported mud are distal equivalents of ORM gravelly sand deposits to the east. Glaciolacustrine sedimentation is indicated by mud-rich texture and laminations. 5) Glaciolacustrine and Recent sediment (GL/R). Thin deposits of sand, silt and clay are found related to a series of lake levels. As water levels fell to Lake Ontario levels, rivers incised deeper, leaving raised terraces and creating new floodplains.
Surficial geological map. Archival well records. Geophysical data.
The modelling process consists of 4 main steps: i) data preparation, ii) training surface construction, iii) final surface construction, and iv) confidence grid construction. The majority of effort in each of the first 3 steps involves the incremental development of a set of 5 stratigraphic datasets that are interpolated to serve as the basis for subsequent steps. The Natural Neighbour method in MapInfo Professional® with Vertical Mapper™ was used for surface interpolations. In the final step, a semi-quantitative confidence grid was constructed to indicate the level of data support for each modelled surface.
Surface geology map at 1:50 000 scale. 4700 archival boreholes and test pits from OGS regional mapping, geotechnical engineering reports (e.g., foundation studies) and hydro-geological site investigations. 31 continuously cored boreholes. ~50 line-kilometers of seismic reflection data. Over 9,000 field mapping sites. Over 60,000 provincial water well records were obtained and incorporated into the modelling process. In lesser-developed areas, water well records often provided the only source of sub-surface information for several kilometers. An invaluable source of hydrogeological data, the water well database was, however, used with caution due to issues of data quality, reliability, and resolution (Russell et al., 1998).


Technical details and constraints

File identifier8e5e762e-c1c3-18e4-4c5f-662234f90e44
Languageeng; CAN
Character encodingregister utf8
Hierarchical classificationregister dataset
Date2017-03-24
Metadata standardNorth American Profile of ISO 19115:2003 - Geographic information - Metadata
VersionCAN/CGSB-171.100-2009
Constraints
Update frequencyregister asNeeded

Regionalisation

Metadata are available in those languages (You can use language menu item in the top menu bar to switch language):
Language code Pays Encodage
register Frenchregister Canadaregister utf8

Geographic Reference System

Reference System codeEPSG:26917
Registerhttp://www.epsg-registry.org/
Version6.14

Metadata Contact

register pointOfContact
Name
OrganisationGovernment of Canada; Natural Resources Canada; Geological Survey of Canada
Position
Information
AddressDelivery point :
City :
Administrative region :
Postal code :
Country :
Email nrcan.gsc-geosciencedata-donneesgeoscience-cgc.rncan@canada.ca
Telephone
Online Resource
register pointOfContact
NameFrancois Letourneau
OrganisationGovernment of Canada; Natural Resources Canada; Geological Survey of Canada - GSC Quebec
Position
Information
AddressDelivery point : 490, rue de la Couronne, 3e étage 490, rue de la Couronne, 3e étage
City : Québec Québec
Administrative region : Québec Québec
Postal code :
Country : Canada Canada
Email francois.letourneau@canada.ca
Telephonetelephone voice; 1 (418) 6543826
Online Resource