Identification Information:
Citation:
Citation Information:
Originator: Energy Resources Conservation Board
Originator: Alberta Geological Survey
Originator: Slattery, S.R.
Originator: Lyster, S.
Originator: Barker, A.A.
Publication Date: 20110224
Title: Bedrock Topography of the Edmonton-Calgary Corridor, Alberta (GIS data, ASCII grid format)
Geospatial Data Presentation Form: raster digital data
Series Information:
Series Name: Digital Data
Issue Identification: DIG 2010-0023
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Online Linkage: http://www.ags.gov.ab.ca/publications/DIG/ZIP/DIG_2010_0023.zip
Description:
Abstract:

This GIS dataset depicts the structural bedrock top surface in the Edmonton-Calgary Corridor based on water-well litholog data, including bedrock outcrop locations. We sourced the well data from an internal Edmonton-Calgary Corridor geological mapping database. This surface provides a geological model for the region.

These data comprise the raster surface of Alberta Geological Survey Map 549, Bedrock Topography of the Edmonton-Calgary Corridor, Alberta.

Purpose:
To update the geological model of the Edmonton-Calgary Corridor region using geostatistically modelled surfaces.
Supplemental Information: In English
Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 2008
Ending Date: 2009
Currentness Reference: ground condition
Status:
Progress: Complete
Maintenance and Update Frequency: Irregular
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -115.467937
East Bounding Coordinate: -112.093028
North Bounding Coordinate: 53.994559
South Bounding Coordinate: 50.883566
Keywords:
Theme:
Theme Keyword Thesaurus: None
Theme Keyword: bedrock topography
Theme Keyword: geology
Theme Keyword: gis data
Theme Keyword: numerical modelling
Theme Keyword: structural
Place:
Place Keyword Thesaurus: None
Place Keyword: 82i
Place Keyword: 82o
Place Keyword: 82p
Place Keyword: 83a
Place Keyword: 83b
Place Keyword: 83g
Place Keyword: 83h
Place Keyword: alberta
Place Keyword: calgary
Place Keyword: canada
Place Keyword: edmonton
Place Keyword: edmonton-calgary corridor
Access Constraints: Public
Use Constraints: Credit to originator/source required. Commercial reproduction not allowed.
Point of Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Alberta Geological Survey
Contact Person: Publications and Marketing Advisor
Contact Position: Publications and Marketing Advisor
Contact Address:
Address Type: mailing and physical
Address: Energy Resources Conservation Board
Address: 4th Floor, Twin Atria Building
Address: 4999-98 Avenue NW
City: Edmonton
State or Province: Alberta
Postal Code: T6B 2X3
Country: Canada
Contact Voice Telephone: (780) 422-1927
Contact Facsimile Telephone: (780) 422-1918
Contact Electronic Mail Address: AGS-Info@ercb.ca
Hours of Service: 8:00 a.m. to 12:00 p.m. and 1:00 p.m. to 4:30 p.m.
Data Set Credit: GISmo Solutions Ltd., K. Mckay
Cross Reference:
Citation Information:
Originator: Energy Resources Conservation Board
Originator: Alberta Geological Survey
Originator: Slattery, S.R.
Originator: Barker, A.A.
Originator: Andriashek, L.D.
Originator: Jean, G.
Originator: Stewart, S.A.
Originator: Moktan, H.
Originator: Lemay, T.G.
Publication Date: 20110308
Title:
Bedrock Topography and Sediment Thickness Mapping in the Edmonton-Calgary Corridor, Central Alberta: An Overview of Protocols and Methodologies
Geospatial Data Presentation Form: document
Series Information:
Series Name: Open File Report
Issue Identification: OFR 2010-12
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Online Linkage: http://www.ags.gov.ab.ca/publications
Cross Reference:
Citation Information:
Originator: Energy Resources Conservation Board
Originator: Alberta Geological Survey
Originator: Slattery, S.R.
Originator: Barker, A.A.
Publication Date: 20110224
Title: Bedrock Topography of the Edmonton-Calgary Corridor, Alberta
Geospatial Data Presentation Form: map
Series Information:
Series Name: Map
Issue Identification: MAP 549
Publication Information:
Publication Place: Edmonton, Alberta, Canada
Publisher: Alberta Geological Survey
Other Citation Details: Scale 1:250000.
Online Linkage: http://www.ags.gov.ab.ca/publications
Data Quality Information:
Logical Consistency Report:
This surface defines the top of the bedrock in the Edmonton-Calgary Corridor. It is in ArcGIS ASCII grid format. Grid cells with no data are assigned the value -9999.
Completeness Report:
We manually assessed duplicate location data and culled them if the bedrock top elevations contradicted each other. Using geostatistical techniques, we excluded outlier bedrock top elevation points from the modelling process.
Positional Accuracy:
Horizontal Positional Accuracy:
Horizontal Positional Accuracy Report:
A modeled surface generated from well log data. The accuracy of well locations is better than +- 10 m. The grid cell size is 250 m.
Vertical Positional Accuracy:
Vertical Positional Accuracy Report:
The surfaces were generated using kriging. The vertical accuracy is dependant upon the location, well-log data density and geological horizon. These surfaces are aimed to capture 5 to 15 m scale offsets.
Lineage:
Process Step:
Process Description:
We modelled the bedrock top elevations from the Edmonton-Calgary Corridor geological mapping database and bedrock outcrop locations in ArcMap. Based on geostatistical analysis, the bedrock topography in the Edmonton-Calgary Corridor shows a clear trend, increasing to the southwest toward the Rocky Mountains. A global first-order polynomial accounted for this trend. We evaluated higher order polynomials, but these provided no further improvement to the model and added unnecessary complexity. The residual values (measurements minus the trend) were modelled using ordinary kriging, which accounted for local variations in the trend value. The final model was produced by adding the global trend to the estimated residuals. Determining bedrock topography involves a three-step process: kriging, assessing the quality and fit of the modelled surface to the data (QA-QC) and re-kriging if necessary. This process is described in Alberta Geological Survey Open File Report 2010-12.
Process Date: 2009
Spatial Data Organization Information:
Direct Spatial Reference Method: Raster
Raster Object Information:
Raster Object Type: Grid Cell
Row Count: 3424
Column Count: 2213
Vertical Count: 1
Spatial Reference Information:
Horizontal Coordinate System Definition:
Planar:
Planar Coordinate Information:
Planar Coordinate Encoding Method: row and column
Planar Distance Units: meters
Coordinate Representation:
Abscissa Resolution: 100.000000
Ordinate Resolution: 100.000000
Map Projection:
Map Projection Name: Transverse Mercator
Transverse Mercator:
Scale Factor at Central Meridian: 0.999200
Longitude of Central Meridian: -115.000000
Latitude of Projection Origin: 0.000000
False Easting: 500000.000000
False Northing: 0.000000
Geodetic Model:
Horizontal Datum Name: North American Datum of 1983
Ellipsoid Name: Geodetic Reference System 80
Semi-Major Axis: 6378137.000000
Denominator of Flattening Ratio: 298.257222
Distribution Information:
Distributor:
Contact Information:
Contact Organization Primary:
Contact Organization: Alberta Geological Survey
Contact Person: Publications and Marketing Advisor
Contact Position: Publications and Marketing Advisor
Contact Address:
Address Type: mailing and physical
Address: Energy Resources Conservation Board
Address: 4th Floor, Twin Atria Building
Address: 4999-98 Avenue NW
City: Edmonton
State or Province: Alberta
Postal Code: T6B 2X3
Country: Canada
Contact Voice Telephone: (780) 422-1927
Contact Facsimile Telephone: (780) 422-1918
Contact Electronic Mail Address: AGS-Info@ercb.ca
Hours of Service: 8:00 a.m. to 12:00 p.m. and 1:00 p.m. to 4:30 p.m.
Distribution Liability:
The Energy Resources Conservation Board/Alberta Geological Survey (ERCB/AGS) and its employees and contractors make no warranty, guarantee or representation, express or implied, or assume any legal liability regarding the correctness, accuracy, completeness or reliability of this publication. The data are supplied on the understanding that they are for the sole use of the user and will not be redistributed in any form, in whole or in part, to third parties. Any references to proprietary software in our documentation, and/or any use of proprietary data formats in our releases, do not constitute endorsement by the ERCB/AGS of any manufacturer's product.
Metadata Reference Information:
Metadata Date: 20110720
Metadata Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Alberta Geological Survey
Contact Person: Publications and Marketing Advisor
Contact Position: Publications and Marketing Advisor
Contact Address:
Address Type: mailing and physical
Address: Energy Resources Conservation Board
Address: 4th Floor, Twin Atria Building
Address: 4999-98 Avenue NW
City: Edmonton
State or Province: Alberta
Postal Code: T6B 2X3
Country: Canada
Contact Voice Telephone: (780) 422-1927
Contact Facsimile Telephone: (780) 422-1918
Contact Electronic Mail Address: AGS-Info@ercb.ca
Hours of Service: 8:00 a.m. to 12:00 p.m. and 1:00 p.m. to 4:30 p.m.
Metadata Standard Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998
Metadata Time Convention: local time
Metadata Access Constraints: none
Metadata Use Constraints: none