Identification Information:

Citation:

Citation Information:

Originator: Alberta Energy Regulator

Originator: Alberta Geological Survey

Originator: Atkinson, L.A.

Originator: Pawley, S.M.

Originator: Andriashek, L.D.

Originator: Hartman, G.M.D.

Originator: Utting, D.J.

Originator: Atkinson, N.

Publication Date: 2020

Title: Sediment Thickness of Alberta, Version 2

Edition: v.2

Geospatial Data Presentation Form: map

Series Information:

Series Name: Map

Issue Identification: MAP 611

Publication Information:

Publication Place: Edmonton, Alberta, Canada

Publisher: Alberta Geological Survey

Other Citation Details: ISBN:978-1-4601-4923-2, Scale 1:1M

Online Linkage: http://www.ags.gov.ab.ca/publications/MAP/PDF/MAP_611.pdf

Description:

Abstract:

This map depicts the new 1:1 000 000 sediment thickness map of Alberta prepared by the Alberta Geological Survey (AGS). This map updates the sediment thickness portrayed in AGS Map 603.

The thickness and distribution of sediments overlying the bedrock surface in Alberta is highly varied, with modelled values ranging from less that 1 m to as much as 360 m. These sediments include Neogene fluvial deposits, glacigenic materials deposited during Quaternary glaciations, as well as postglacial sediments.

The thickness and distribution of sediments overlying bedrock in Alberta was produced by subtracting a newly revised bedrock topography gridded surface of Alberta that was generated using machine learning techniques from a land surface digital elevation model (DEM). The land surface DEM was generated at a 500 m grid cell size using the aggregate tool in ArcGIS to resample the DEM at a coarser resolution that would be appropriate for a provincial-scale model. The newly generated bedrock topography grid is represented in AGS Map 610, Bedrock Topography of Alberta, Version 2 and available in AGS Digital Data 2020-0022. The sediment thickness grid represented in AGS Map 611 is also available in AGS Digital Data 2020-0023.

Purpose: To update previous reconstructions of the sediment thickness of Alberta.

Supplemental Information: Language: In English;

Time Period of Content:

Time Period Information:

Range of Dates/Times:

Beginning Date: 2018

Ending Date: 2020

Currentness Reference: compilation date

Status:

Progress: Complete

Maintenance and Update Frequency: None planned

Spatial Domain:

Bounding Coordinates:

West Bounding Coordinate: -120

East Bounding Coordinate: -110

North Bounding Coordinate: 60

South Bounding Coordinate: 49

Keywords:

Theme:

Theme Keyword Thesaurus: none

Theme Keyword: bedrock topography

Theme Keyword: buried valleys

Theme Keyword: drift thickness

Theme Keyword: geology

Theme Keyword: mapping

Theme Keyword: preglacial deposit

Theme Keyword: preglacial drainage

Theme Keyword: preglacial topography

Theme Keyword: subsurface

Place:

Place Keyword Thesaurus: none

Place Keyword: 72e

Place Keyword: 72l

Place Keyword: 72m

Place Keyword: 73d

Place Keyword: 73e

Place Keyword: 73l

Place Keyword: 73m

Place Keyword: 74d

Place Keyword: 74e

Place Keyword: 74l

Place Keyword: 74m

Place Keyword: 82g

Place Keyword: 82h

Place Keyword: 82i

Place Keyword: 82j

Place Keyword: 82n

Place Keyword: 82o

Place Keyword: 82p

Place Keyword: 83a

Place Keyword: 83b

Place Keyword: 83c

Place Keyword: 83d

Place Keyword: 83e

Place Keyword: 83f

Place Keyword: 83g

Place Keyword: 83h

Place Keyword: 83i

Place Keyword: 83j

Place Keyword: 83k

Place Keyword: 83l

Place Keyword: 83m

Place Keyword: 83n

Place Keyword: 83o

Place Keyword: 83p

Place Keyword: 84a

Place Keyword: 84b

Place Keyword: 84c

Place Keyword: 84d

Place Keyword: 84e

Place Keyword: 84f

Place Keyword: 84g

Place Keyword: 84h

Place Keyword: 84i

Place Keyword: 84j

Place Keyword: 84k

Place Keyword: 84l

Place Keyword: 84m

Place Keyword: 84n

Place Keyword: 84o

Place Keyword: 84p

Place Keyword: alberta

Place Keyword: canada

Access Constraints: Public

Use Constraints:

Acknowledgement of the Alberta Energy Regulator/Alberta Geological Survey as the originator/source of this information is required as described in the Open Government License - Alberta.

Point of Contact:

Contact Information:

Contact Organization Primary:

Contact Organization: Alberta Geological Survey

Contact Person: AGS Information Manager

Contact Position: AGS Information Manager

Contact Address:

Address Type: mailing and physical

Address: Alberta Energy Regulator

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) 638-4491

Contact Facsimile Telephone: (780) 422-1459

Contact Electronic Mail Address: AGS-Info@aer.ca

Hours of Service: 8:00 a.m. to 12:00 p.m. and 1:00 p.m. to 4:30 p.m.

Cross Reference:

Citation Information:

Originator: Alberta Energy Regulator

Originator: Alberta Geological Survey

Originator: MacCormack, K.E.

Originator: Atkinson, N.

Originator: Lyster, S.

Publication Date: 2015

Title: Sediment Thickness of Alberta

Geospatial Data Presentation Form: map

Series Information:

Series Name: Map

Issue Identification: MAP 603

Publication Information:

Publication Place: Edmonton, Alberta, Canada

Publisher: Alberta Geological Survey

Other Citation Details: Scale 1:1000000 ISBN: 978-1-4601-0122-3

Online Linkage: https://www.ags.aer.ca

Cross Reference:

Citation Information:

Originator: Alberta Energy Regulator

Originator: Alberta Geological Survey

Publication Date: 2020

Title: Bedrock Topography of Alberta, Version 2 (gridded data, ASCII format)

Edition: v.2

Geospatial Data Presentation Form: raster digital data

Series Information:

Series Name: Digital Data

Issue Identification: DIG 2020-0022

Publication Information:

Publication Place: Edmonton, Alberta

Publisher: Alberta Geological Survey

Other Citation Details: Scale 1:1 million

Online Linkage: https://www.ags.aer.ca

Cross Reference:

Citation Information:

Originator: Alberta Energy Regulator

Originator: Alberta Geological Survey

Publication Date: 2020

Title: Sediment Thickness of Alberta, Version 2 (gridded data, ASCII format)

Edition: v.2

Geospatial Data Presentation Form: raster digital data

Series Information:

Series Name: Digital Data

Issue Identification: DIG 2020-0023

Publication Information:

Publication Place: Edmonton, Alberta

Publisher: Alberta Geological Survey

Other Citation Details: Scale 1:1 million

Online Linkage: https://www.ags.aer.ca

Cross Reference:

Citation Information:

Originator: Alberta Energy Regulator

Originator: Alberta Geological Survey

Originator: Atkinson, L.A.

Originator: Pawley, S.M.

Originator: Andriashek, L.D.

Originator: Hartman, G.M.D.

Originator: Utting, D.J.

Originator: Atkinson, N.

Publication Date: 2020

Title: Bedrock Topography of Alberta, Version 2

Edition: v.2

Geospatial Data Presentation Form: map

Series Information:

Series Name: Map

Issue Identification: MAP 610

Publication Information:

Publication Place: Edmonton, Alberta, Canada

Publisher: Alberta Geological Survey

Other Citation Details: ISBN:978-1-4601-4922-5

Online Linkage: https://www.ags.aer.ca

Data Quality Information:

Attribute Accuracy:

Attribute Accuracy Report:

The sediment thickness was calculated by subtracting the modelled bedrock topography gridded surface from a land surface digital elevation model resampled to a 500 m by 500 m grid. Any errors in the modelled bedrock topography are also present in the sediment thickness grid. The 500 m digital elevation model will vary from higher resolution models; however, for the purposes of a provincial-scale grid the detail provided in a high-resolution digital elevation model is not necessary.

Logical Consistency Report:

Sediment thickness gridded data portrayed on this map are available in AGS Digital Data 2020-2023. The gridded data indicate the thickness of sediments in metres that lie above the bedrock topography grid (AGS Digital Data 2020-0022). The grid was exported as a continuous surface in ArcGIS ASCII grid format. The grid cell spacing is 500 m by 500 m, and any grid cells with a null value have been assigned the value -9999.

Completeness Report:

Machine learning techniques were used to model the bedrock topography grid. Input data for the bedrock topography used multi-source input data of variable quality. Bedrock topography picks that were identified as outliers by an AGS geologist were excluded from the modelling process. The bedrock topography grid and a resampled land surface digital elevation model were used to calculate the sediment thickness grid.

Positional Accuracy:

Horizontal Positional Accuracy:

Horizontal Positional Accuracy Report:

Bedrock topography picks used to generate the gridded surface were from a variety of sources that have inherent location errors. The sediment thickness was calculated from the bedrock topography grid and a land surface digital elevation model. At the 500 m grid cell size the bedrock topography and ground surface were rendered at, any horizontal positional error will have little impact on the accuracy of the grid considering this is a provincial-scale grid and not intended for local scale studies.

Vertical Positional Accuracy:

Vertical Positional Accuracy Report:

The vertical positional error of the bedrock topography grid, which was used to calculate the sediment thickness grid is a function of the quality of the pick set, including data density, the surface complexity (i.e. topographic variability), and the removal of points from the pick set that are identified as outliers. The occurrence of vertical errors has been mitigated by ensuring the bedrock topography picks were estimated from the same land surface datum, assessing the quality of the data, and then geostatistically evaluating the data points to identify and remove outliers.

Lineage:

Source Information:

Source Citation:

Citation Information:

Originator: Alberta Energy Regulator

Originator: Alberta Geological Survey

Publication Date: 2020

Title: Bedrock Topography of Alberta, Version 2 (gridded data, ASCII format)

Edition: v.2

Geospatial Data Presentation Form: raster digital data

Series Information:

Series Name: Digital Data

Issue Identification: DIG 2020-0022

Publication Information:

Publication Place: Edmonton, Alberta

Publisher: Alberta Geological Survey

Other Citation Details: Scale 1:1 million

Online Linkage: I:\GIS\Geoscience\bedrock\province\1M\btopo_tm_v2.asc

Source Scale Denominator: 0

Type of Source Media: online

Source Time Period of Content:

Time Period Information:

Single Date/Time:

Calendar Date: 2020

Source Currentness Reference: current

Source Citation Abbreviation: bedrock topography grid

Source Contribution: The grid is the bedrock topography of Alberta.

Source Information:

Source Citation:

Citation Information:

Originator: Alberta Energy Regulator

Originator: Alberta Geological Survey

Publication Date: 2020

Title: Sediment Thickness of Alberta, Version 2 (gridded data, ASCII format)

Edition: v.2

Geospatial Data Presentation Form: raster digital data

Series Information:

Series Name: Digital Data

Issue Identification: DIG 2020-0023

Publication Information:

Publication Place: Edmonton, Alberta

Publisher: Alberta Geological Survey

Other Citation Details: Scale 1:1 million

Online Linkage: I:\GIS\Geoscience\surficial\province\1M\sed_thk_tm_v2.asc

Source Scale Denominator: 0

Type of Source Media: online

Source Time Period of Content:

Time Period Information:

Single Date/Time:

Calendar Date: 2020

Source Currentness Reference: current

Source Citation Abbreviation: sediment thickness grid

Source Contribution: The grid is the sediment thickness of Alberta.

Process Step:

Process Description:

The sediment thickness was derived by subtracting the modelled bedrock topography gridded surface from a land surface digital elevation model (DEM). The land surface DEM was generated at a 500 m grid cell size using the aggregate tool in ArcGIS to resample the DEM at a coarser resolution that would be appropriate for a provincial-scale model. The bedrock topography gridded surface was rendered at the same 500 m grid cell size resolution, which is intended for provincial-scale investigations and not applicable for site specific studies. The sediment thickness grid was produced in Transverse Mercator projection using the North American Datum 1983 (NAD83).

Process Date: 2020

Distribution Information:

Distributor:

Contact Information:

Contact Organization Primary:

Contact Organization: Alberta Geological Survey

Contact Person: AGS Information Manager

Contact Position: AGS Information Manager

Contact Address:

Address Type: mailing and physical

Address: Alberta Energy Regulator

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) 638-4491

Contact Facsimile Telephone: (780) 422-1459

Contact Electronic Mail Address: AGS-Info@aer.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 Alberta Energy Regulator/Alberta Geological Survey (AER/AGS) licenses this information under the Open Government License - Alberta. 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 AER/AGS of any manufacturer's product.

Metadata Reference Information:

Metadata Date: 20201008

Metadata Contact:

Contact Information:

Contact Organization Primary:

Contact Organization: Alberta Geological Survey

Contact Person: AGS Information Manager

Contact Position: AGS Information Manager

Contact Address:

Address Type: mailing and physical

Address: Alberta Energy Regulator

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) 638-4491

Contact Facsimile Telephone: (780) 422-1459

Contact Electronic Mail Address: AGS-Info@aer.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