Abstract: The bedrock topography of Alberta is the surface of the top of Upper Cretaceous and Paleogene bedrock, and reveals geomorphic features created by Paleogene to Recent river systems and Quaternary glaciation. This dataset consists of previously published information from Alberta Geological Survey (AGS) maps and reports, as well as new data for which the quality has been assessed in order to apply a quality-weighting approach prior to modelling the bedrock topography surface. It is the data used to produce AGS Map 602, Bedrock Topography of Alberta. Explanatory notes, references, and data sources appear on a supplementary page to accompany Map 602. These notes describe the distribution of physiographic terrain elements of the bedrock surface across Alberta, and the sources and quality of the data that were used to interpolate this surface.
Metadata:
File identifier:
DIG_2016_0038.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) 422-1459
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:
2016-08-29
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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Vector spatial representation:
Geometric objects:
Geometric objects:
Geometric object type:
Geometric object type code:
point
Geometric object count:
178466
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Reference system:
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Reference system:
Reference system identifier:
RS Identifier:
Code:
EPSG:3400
Code Space:
http://www.epsg-registry.org/
Version:
8.4.1
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xlink: https://www.ngdc.noaa.gov/docucomp/65f8b220-95ed-11e0-aa80-0800200c9a66 title: North American Datum 1983
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xlink: https://www.ngdc.noaa.gov/docucomp/c3895520-95ed-11e0-aa80-0800200c9a66 title: Geodetic Reference System 1980
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Data identification:
Citation:
Citation:
Title:
Pick Elevations for the Bedrock Topography of the Alberta Plains (tabular data, tab delimited format)
Date:
Date:
Date:
2016-06-01
Date type:
Date type code:
publication
Cited responsible party:
Responsible party:
Organisation name:
Alberta Energy Regulator
Role:
Role code:
originator
Cited responsible party:
Responsible party:
Organisation name:
Alberta Geological Survey
Role:
Role code:
originator
Cited responsible party:
Responsible party:
Organisation name:
Lyster, S.
Role:
Role code:
originator
Cited responsible party:
Responsible party:
Organisation name:
MacCormack, K.E.
Role:
Role code:
originator
Cited responsible party:
Responsible party:
Organisation name:
Atkinson, N.
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:
tableDigital
Series:
Series:
Name:
Digital Data
Issue identification:
DIG 2016-0038
Abstract:
The bedrock topography of Alberta is the surface of the top of Upper Cretaceous and Paleogene bedrock, and
reveals geomorphic features created by Paleogene to Recent river systems and Quaternary glaciation. This
dataset consists of previously published information from Alberta Geological Survey (AGS) maps and reports,
as well as new data for which the quality has been assessed in order to apply a quality-weighting approach
prior to modelling the bedrock topography surface. It is the data used to produce AGS Map 602, Bedrock
Topography of Alberta. Explanatory notes, references, and data sources appear on a supplementary page to
accompany Map 602. These notes describe the distribution of physiographic terrain elements of the bedrock
surface across Alberta, and the sources and quality of the data that were used to interpolate this surface.
Purpose:
To provide the data used to create AGS Map 602, Bedrock Topography of Alberta.
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) 422-1459
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:
unknown
Descriptive keywords:
Keywords:
Keyword:
bedrock
Keyword:
bedrock topography
Keyword:
buried channels
Keyword:
geology
Keyword:
numerical modelling
Keyword:
preglacial drainage
Keyword:
preglacial topography
Keyword:
structural
Keyword:
subsurface
Keyword:
thalwegs
Keyword:
topography
Type:
Keyword type code:
theme
Thesaurus name:
Citation:
Title:
none
Date:
unknown
Descriptive keywords:
Keywords:
Keyword:
72e
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72l
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84k
Keyword:
84l
Keyword:
84m
Keyword:
84n
Keyword:
84o
Keyword:
84p
Keyword:
alberta
Keyword:
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:
Bedrock Topography of Alberta
Date:
Date:
Date:
2015-01-01
Date type:
Date type code:
publication
Cited responsible party:
Responsible party:
Organisation name:
Alberta Energy Regulator
Role:
Role code:
originator
Cited responsible party:
Responsible party:
Organisation name:
Alberta Geological Survey
Role:
Role code:
originator
Cited responsible party:
Responsible party:
Organisation name:
MacCormack, K.E.
Role:
Role code:
originator
Cited responsible party:
Responsible party:
Organisation name:
Atkinson, N.
Role:
Role code:
originator
Cited responsible party:
Responsible party:
Organisation name:
Lyster, S.
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://www.ags.aer.ca
Role:
Role code:
publisher
Presentation form:
Presentation form code:
mapDigital
Series:
Series:
Name:
Map
Issue identification:
MAP 602
Other citation details:
Scale 1:1000000. ISBN: 978-1-4601-0121-6
Association Type:
Association type code:
crossReference
Aggregation Info:
AggregateInformation:
Aggregate Data Set Name:
Citation:
Title:
Bedrock Topography of Alberta (gridded data, ASCII format)
Date:
Date:
Date:
2016-06-01
Date type:
Date type code:
publication
Cited responsible party:
Responsible party:
Organisation name:
Alberta Energy Regulator
Role:
Role code:
originator
Cited responsible party:
Responsible party:
Organisation name:
Alberta Geological Survey
Role:
Role code:
originator
Cited responsible party:
Responsible party:
Organisation name:
MacCormack, K.E.
Role:
Role code:
originator
Cited responsible party:
Responsible party:
Organisation name:
Lyster, S.
Role:
Role code:
originator
Cited responsible party:
Responsible party:
Organisation name:
Atkinson, N.
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://www.ags.aer.ca
Role:
Role code:
publisher
Presentation form:
Presentation form code:
mapDigital
Series:
Series:
Name:
Digital Data
Issue identification:
DIG 2016-0039
Other citation details:
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:
-120
East bound longitude:
-110
South bound latitude:
49
North bound latitude:
60
Temporal element:
Temporal extent:
Extent:
Time instant:
Description:
ground condition
Time position:
2015-01-01
Supplemental Information:
Language: In English;
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Feature catalogue description:
Included with dataset:
false
Feature catalogue citation:
Citation:
Title:
Entity and Attribute Information
Date:
Other citation details:
Detailed Entity and Attribute information is provided with the dataset, formatted as Federal Geographic
Data Committee (FGDC) Content Standard for Digital Geospatial Metadata.
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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) 422-1459
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:
https://static.ags.aer.ca/files/document/DIG/DIG_2016_0038.zip
Name:
Tabular Data
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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:
The horizontal positional accuracy of the wells upon which the stratigraphic picks are made is not
precisely known at each location. We estimate the well locations from the input data sets are within a
10m radius of their actual locations.
Result:
Quantitative result:
Value unit:
Base unit:
Identifier:
Units system: xlink: http://www.bipm.org/en/si/
Value:
Report:
Absolute external positional accuracy:
Name of measure:
Vertical Positional Accuracy
Measure description:
Evaluation method description:
The vertical positional error in the bedrock topography picks is unknown. However there is a potential for
the introduction of error in inaccurate kelly bushing (KB) elevations, and mistakes in the making the
bedrock topography pick. Uncertainty in the vertical positional accuracy can also be caused by human
error resulting from incorrect placement of the pick on the well logs. The occurrence and magnitude of
these errors are difficult to identify, however these types of errors were mitigated through comparison
with existing published pick data sets and through geostatistical evaluation to identify potential
outliers. The number of significant figures in the depth values for the Alberta Water Well Information
Database (AWWID) sourced data is as received from the AWWID.
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:
All available data identifying the bedrock topography surface were evaluated irrespective of their data
quality. The model results were cross-validated to identify and manage outliers and collocated data from
the compiled dataset.
Result:
unknown
Report:
Conceptual consistency:
Measure description:
The data were visualized in 3D space to look for obvious erroneous data points, which were removed from
the data set. Data were geostatistically analyzed to identify potential outliers, and also evaluated for
collocated data. This dataset is reported as tabular data (point data with X, Y, Z, and quality
attribute values ).
Result:
unknown
Report:
Non quantitative attribute accuracy:
Measure description:
A stratigraphic pick in a well is a point defined in three dimensions (X, Y and Z).The accuracy of the
pick, either in measured depth from the kelly bushing (KB), or with respect to sea level, is difficult
to quantify. Sources of error include:
- incorrectly recorded well surface or bottom hole location, which results in an error in either X, Y, or
both.
- incorrectly recorded ground or KB elevation, which results in an error in the Z dimension.
- incorrect stratigraphic top pick elevation values, or an incorrectly identified formation result in
error in the Z dimension.
- errors in data entry or data transfer, resulting in errors in X, Y and/or Z values.
Any errors in the initial data points were reduced in the final data set by geostatistical evaluation to
identify and remove outliers.
Result:
inapplicable
Lineage:
Lineage:
Statement:
All available data identifying the bedrock topography surface were evaluated irrespective of their data
quality. The model results were cross-validated to identify and manage outliers and collocated data from
the compiled dataset.
Process step:
Process step:
Description:
Step 1 (quality assessment): This data represents the elevation at which the uppermost bedrock unit
was encountered and was compiled from a variety of data sources. These data were considered to be of
variable quality depending on the source from which they were acquired, and were quality-weighted
during interpolation of the bedrock topography surface.
Step 2 (quality-weighting): Quality-weighting was accomplished by spatially filtering the data based
on data quality. The medium quality data were filtered to remove all data from this subset that were
within 1000m (2 grid cells) of any high quality data point. The low quality data were filtered to
remove any data that was within 2500m (5 grid cells) of any high or medium quality data point. The
quality filtered dataset data were assigned a quality code of high, medium, or low, and this
information is included in the data table for the point dataset. For areas where there was no
bedrock top pick available within 10 kilometers, a control point was inserted to help constrain the
surface during interpolation.
Step 3 (outlier identification): The quality-weighted dataset was geostatistically evaluated to
identify and remove outliers.
Date and time:
2015-01-01T00:00:00
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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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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) 422-1459
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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