Abstract: The Geological Atlas of the Western Canada Sedimentary Basin was designed primarily as a reference volume documenting the subsurface geology of the Western Canada Sedimentary Basin. This GIS dataset is one of a collection of shapefiles representing part of Chapter 7 of the Atlas, Paleographic Evolution of the Cratonic Platform - Cambrian to Triassic, Figure 6, Silurian (OS4) Paleogeography. Shapefiles were produced from archived digital files created by the Alberta Geological Survey in the mid-1990s, and edited in 2005-06 to correct, attribute and consolidate the data into single files by feature type and by figure.
Metadata: 
  File identifier: 
      DIG_2008_0020.xml
  Language: 
      eng; CAN
  Character set: 
    Character set code: 
      utf8
  Hierarchy level: 
    Scope code: 
      dataset
  Metadata author: 
    Responsible party: 
      Organisation name: 
          Alberta Geological Survey
      Position name: 
          AGS Information Manager
      Contact info: 
        Contact: 
          Phone: 
            Telephone: 
              Voice: 
                  (780) 638-4491
              Facsimile: 
                  (780) 422-1918
          Address: 
            Address: 
              Delivery point: 
                  Alberta Energy Regulator
              Delivery point: 
                  4th Floor, Twin Atria Building
              Delivery point: 
                  4999-98 Avenue NW
              City: 
                  Edmonton
              Administrative area: 
                  Alberta
              Postal code: 
                  T6B 2X3
              Country: 
                  Canada
              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.
      Role: 
        Role code: 
          pointOfContact
  Date stamp: 

      2016-03-29
  Metadata standard name: 
      North American Profile of ISO 19115:2003 - Geographic information - Metadata (NAP-Metadata)
  Metadata standard version: 
      ISO 19115-1.1
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Spatial representation info:

Vector spatial representation: Geometric objects: Geometric objects: Geometric object type: Geometric object type code: curve Geometric object count: 3
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Spatial representation info:

Grid spatial representation: Number of dimensions: 2 Axis Dimension Properties: Dimension: Dimension name: Dimension name type code: column Dimension size: unknown Resolution: uom: decimalDegrees 0.08 Axis Dimension Properties: Dimension: Dimension name: Dimension name type code: row Dimension size: unknown Resolution: uom: decimalDegrees 0.08 Cell geometry: Cell geometry code: Transformation parameter availability: false
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Reference system info:

Reference system:
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Reference system info:

Reference system: Reference system identifier: RS Identifier: Code: EPSG:4269 Code Space: http://www.epsg-registry.org/ Version: 8.4.1
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Reference system info:

xlink: https://www.ngdc.noaa.gov/docucomp/65f8b220-95ed-11e0-aa80-0800200c9a66 title: North American Datum 1983
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Reference system info:

xlink: https://www.ngdc.noaa.gov/docucomp/c3895520-95ed-11e0-aa80-0800200c9a66 title: Geodetic Reference System 1980
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Identification info:

Data identification: Citation: Citation: Title: Silurian (OS4) Paleogeography (GIS data, line features) Date: Date: Date: 2008-01-01 Date type: Date type code: publication Edition: v. 2 Cited responsible party: Responsible party: Organisation name: Kent, D.M. Role: Role code: originator Cited responsible party: Responsible party: Organisation name: Alberta Geological Survey Contact info: Contact: Address: Address: City: Edmonton Administrative area: Alberta, Canada Role: Role code: publisher Presentation form: Presentation form code: mapDigital Series: Series: Name: Digital Data Issue identification: DIG 2008-0020 Abstract: The Geological Atlas of the Western Canada Sedimentary Basin was designed primarily as a reference volume documenting the subsurface geology of the Western Canada Sedimentary Basin. This GIS dataset is one of a collection of shapefiles representing part of Chapter 7 of the Atlas, Paleographic Evolution of the Cratonic Platform - Cambrian to Triassic, Figure 6, Silurian (OS4) Paleogeography. Shapefiles were produced from archived digital files created by the Alberta Geological Survey in the mid-1990s, and edited in 2005-06 to correct, attribute and consolidate the data into single files by feature type and by figure. Purpose: For incorporating Atlas data into a Geographic Information System at a regional scale. Credit: A. Lytviak, E.J. Waters, N. Blundon, K. Miller, N. Crann Status: Progress code: completed Point of contact: Responsible party: Organisation name: Alberta Geological Survey Position name: AGS Information Manager Contact info: Contact: Phone: Telephone: Voice: (780) 638-4491 Facsimile: (780) 422-1918 Address: Address: Delivery point: Alberta Energy Regulator Delivery point: 4th Floor, Twin Atria Building Delivery point: 4999-98 Avenue NW City: Edmonton Administrative area: Alberta Postal code: T6B 2X3 Country: Canada 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. Role: Role code: pointOfContact Resource maintenance: Maintenance information: Maintenance and update frequency: Maintenance frequency code: notPlanned Descriptive keywords: Keywords: Keyword: geology Keyword: gis data Keyword: western canada sedimentary basin Type: Keyword type code: theme Thesaurus name: Citation: Title: None Date: unknown Descriptive keywords: Keywords: Keyword: 72e Keyword: 72l Keyword: 72m Keyword: 73d Keyword: 73e Keyword: 73l Keyword: 73m Keyword: 74d Keyword: 74e Keyword: 74l Keyword: 74m Keyword: 82g Keyword: 82h Keyword: 82i Keyword: 82j Keyword: 82n Keyword: 82o Keyword: 82p Keyword: 83a Keyword: 83b Keyword: 83c Keyword: 83d Keyword: 83e Keyword: 83f Keyword: 83g Keyword: 83h Keyword: 83i Keyword: 83j Keyword: 83k Keyword: 83l Keyword: 83m Keyword: 83n Keyword: 83o Keyword: 83p Keyword: 84a Keyword: 84b Keyword: 84c Keyword: 84d Keyword: 84e Keyword: 84f Keyword: 84g Keyword: 84h Keyword: 84i Keyword: 84j Keyword: 84k Keyword: 84l Keyword: 84m Keyword: 84n Keyword: 84o Keyword: 84p Keyword: alberta Keyword: canada Keyword: western canada Type: Keyword type code: place Thesaurus name: Citation: Title: None Date: unknown Resource constraints: Legal constraints: Access constraints: Restriction code: otherRestrictions Use constraints: Restriction code: otherRestrictions Other constraints: 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. 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. Aggregation Info: AggregateInformation: Aggregate Data Set Name: Citation: Title: Geological Atlas of the Western Canada Sedimentary Basin Date: Date: Date: 1994-01-01 Date type: Date type code: publication Cited responsible party: Responsible party: Organisation name: Alberta Geological Survey Role: Role code: originator Cited responsible party: Responsible party: Organisation name: Alberta Research Council Role: Role code: originator Cited responsible party: Responsible party: Organisation name: Canadian Society of Petroleum Geologists Role: Role code: originator Cited responsible party: Responsible party: Organisation name: Alberta Geological Survey Contact info: Contact: Address: Address: City: Edmonton Administrative area: Alberta, Canada Online Resource: Online Resource: Linkage: URL: http://ags.aer.ca/ Role: Role code: publisher Presentation form: Presentation form code: mapHardcopy Series: Series: Name: Special Report Issue identification: SPE 004 Other citation details: Compiled by Grant Mossop and Irina Shetsen. Association Type: Association type code: crossReference Spatial representation type: Spatial representation type code: vector Language: eng; CAN Topic category: Topic category code: geoscientificInformation Extent: Extent: Geographic element: Geographic bounding box: West bound longitude: -124.610745 East bound longitude: -97.251902 South bound latitude: 48.997354 North bound latitude: 61.989812 Temporal element: Temporal extent: Extent: Time instant: Description: source publication date Time position: 1994-01-01 Supplemental Information: In English.
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Content info:

Feature catalogue description: Included with dataset: false Feature catalogue citation: Citation: Title: Entity and Attribute Information Date: Other citation details: Attributes encapsulate the title and legend details of the figure.
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DISTRIBUTION INFO:

Distribution: Distributor: Distributor: Distributor contact: Responsible party: Organisation name: Alberta Geological Survey Position name: AGS Information Manager Contact info: Contact: Phone: Telephone: Voice: (780) 638-4491 Facsimile: (780) 422-1918 Address: Address: Delivery point: Alberta Energy Regulator Delivery point: 4th Floor, Twin Atria Building Delivery point: 4999-98 Avenue NW City: Edmonton Administrative area: Alberta Postal code: T6B 2X3 Country: Canada 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. Role: Role code: distributor Transfer options: Digital transfer options: Online: Online Resource: Linkage: URL: http://ags.aer.ca/document/DIG/DIG_2008_0020.zip Name: SHP
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Data quality info:

Data quality: Scope: Scope: Hierarchy level: Scope code: dataset Report: Absolute external positional accuracy: Name of measure: Horizontal Positional Accuracy Measure description: Evaluation method description: This dataset is part of a regional study covering nearly one and a half million square kilometres. Accordingly, the data should only be used to provide geological context information at a regional scale. Figures from different chapters of the Atlas were prepared by different authors, and no effort has been made by AGS to distinguish which shapefiles may be of greater or less relative positional accuracy. We estimate that the relative positional accuracy averages +/- 10 km for the files. This estimate does not take into account the accuracy of the original works, which have not been quantified. Result: Quantitative result: Value unit: Base unit: Identifier: Units system: xlink: http://www.bipm.org/en/si/ Value: Report: Completeness commission: Result: unknown Report: Completeness omission: Evaluation method description: The Geological Atlas is a study of the Western Canada Sedimentary Basin based upon a well density of one well per Township (36 square miles or 93 square km). Users are encouraged to consult relevant parts of the Atlas to obtain specific methodology information for datasets of interest. Result: unknown Report: Conceptual consistency: Measure description: This shapefile may contain overlaps and gaps between what are intended to be logically contiguous polygons. Where gaps were larger than approximately 100 m, polygons were edited to snap shared boundaries together. However, not all gaps and overlaps were corrected. Logical inconsistencies are also known to exist among datasets from different chapters of the Atlas itself. For example, stratigraphic surfaces may intersect or overlap incorrectly; stratigraphically lower horizons crop out above certain units, and vice versa. This is a function of different authors of the Atlas modelling their data in isolation from others, and no attempt was made by the Alberta Geological Survey (AGS) to correct these types of deficiencies. Result: unknown Lineage: Lineage: Statement: The Geological Atlas is a study of the Western Canada Sedimentary Basin based upon a well density of one well per Township (36 square miles or 93 square km). Users are encouraged to consult relevant parts of the Atlas to obtain specific methodology information for datasets of interest. Process step: Process step: Description: Data were archived in digital form by AGS, in geographic coordinate-based ascii files. The files were reformated into ArcGenerate ascii files, using the ID field for the elevation attribute, then converted to shapefiles using FME 2002. An elevation field was created and the ID field was copied over then dropped. Shapefiles were shifted from NAD27 to NAD83 using FME 2002, which references the NTv2 grid file. All processing was done in batch mode. Date and time: 2003-01-01T00:00:00 Process step: Process step: Description: This file was generated as part of a batch of 349 shapefiles that were deemed to be of interest for conversion to GIS format. 188 figures/maps are represented by these shapefiles. Source data for the batch conversion project were in one of three types: 1) georeferenced digital ASCII files previously converted into shapefile format; 2) non-georeferenced, graphics format (.wmf); and 3) paper maps. Type 1 shapefile data were checked for completeness of line and polygon features, edited, then attributed with the figure title and individual feature descriptions given in the map legends. Type 2 data followed the same workflow as Type 1, except that the figures were first converted to DXF format then transformed using ArcInfo into real-world coordinates. The relatively few maps of Type 3 were scanned into image format, digitized in heads-up mode, then handled the same as Type 2 data. A quality-checking system was used to track the status of each figure and file as the work proceeded. Check plots of each map at the respective source map scale and projection and were compared to originals by the supervising geologist (M. Grobe). Errors were flagged and subsequently corrected. Once the data had been thoroughly checked, the shapefiles were projected into geographic coordinates, NAD 83 datum. ArcMap layer files were created to render the shapefile data as they appear in the Geological Atlas. This step served to further the quality control for the data. Minor edits were required to about 10 shapefiles in order to symbolize them as they appear in the Atlas. Date and time: 2006-01-01T00:00:00
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Metadata constraints:

Legal constraints: Access constraints: Restriction code: otherRestrictions Use constraints: Restriction code: otherRestrictions Other constraints: Metadata Access Constraints: none Metadata Use Constraints: none
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Metadata maintenance:

Maintenance information: Maintenance and update frequency: unknown Maintenance note: This metadata was automatically generated from the FGDC Content Standard for Digital Geospatial Metadatastandard version FGDC-STD-001-1998 using the January 2013 version of the FGDC CSDGM to ISO 19115-2 transform. Metadata author: Responsible party: Organisation name: Alberta Geological Survey Position name: AGS Information Manager Contact info: Contact: Phone: Telephone: Voice: (780) 638-4491 Facsimile: (780) 422-1918 Address: Address: Delivery point: Alberta Energy Regulator Delivery point: 4th Floor, Twin Atria Building Delivery point: 4999-98 Avenue NW City: Edmonton Administrative area: Alberta Postal code: T6B 2X3 Country: Canada 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. Role: Role code: custodian
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