Identification_Information: Citation: Citation_Information: Originator: Bednarski, J.M. Publication_Date: 1999 Title: Potts Lake Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: A Series Issue_Identification: 1938 Publication_Information: Publication_Place: Ottawa, Ontario Publisher: Geological Survey of Canada, Natural Resources Canada Other_Citation_Details: Recommended citation: Bednarski, J.M. 1999: Surficial geology, Potts Lake, Alberta; Geological Survey of Canada, Map 1938A, scale 1:100 000. Online_Linkage: Description: Abstract: Surficial geology maps 1937A (Dog River), 1938A (Potts Lake), 1939A (Barrow Lake), 1940A (Florence Lake) and 1941A (Baril Lake) cover the north east corner of Alberta. The Kazan Upland, where the only surface exposure of Precambrian Shield is found in Alberta, was extensively scoured by the Laurentide Ice Sheet during the last glaciation and is now sparsely covered by glacial deposits. In contrast, widespread glacial, deltaic and lacustrine sediments cover areas underlain by Paleozoic sedimentary rocks west of the Slave River. The ice sheet flowed southwestward over the area during the last glacial maximum, but the pattern of ice flow changed during deglaciation when two distinct lobes developed. A westward-flowing ice lobe, occupying the Lake Athabasca basin, converged with southwesterly flowing ice north of it. Converging striae, and a broad east-west band of glacial outwash and lake sediments, mark the lateral contact between the two lobes. When the ice sheet retreated eastward, the Slave River lowland and Lake Athabasca basin were flooded from the north by glacial Lake McConnell. The ice sheet formed an extensive ice dam along the western edge of the Kazan upland and glacial Lake McConnell reached about 305 m above sea level near present-day Lake Athabasca. The Slave moraine marks the position of this ice front and is correlative with the 10 ka BP Cree Lake moraine of northeastern Saskatchewan. As glacial Lake McConnell drained a large delta formed in the Slave River lowland depositing sand over the glaciolacustrine mud. The delta was at its largest when Lake Athabasca separated from glacial Lake McConnell between 9 and 8 ka BP. Later, in the Holocene the Peace and Slave rivers incised the older deltaic sediments, forming the modern Peace/Athabasca delta. Purpose: Supplemental_Information: Data set is in English. Magnetic declination stated in degrees and minutes. Annual change stated in minutes. Magnetic declination at NW corner of map: 20°1'E, changing 18.5'W annually. Magnetic declination at SW corner of map: 19°42'E, changing 17.7'W annually. Magnetic declination at NE corner of map: 19°15'E, changing 18.2'W annually. Magnetic declination at SE corner of map: 18°56'E, changing 17.4'W annually. Magnetic declination at center of map: 19°29'E, changing 17.9'W annually. Number of base data sets used: 4 Base data set 1: Source is NTDB, ID is 74 M/9, version n/a, n/a, scale 1:50000 Base data set 2: Source is NTDB, ID is 74 M/10, version n/a, n/a, scale 1:50000 Base data set 3: Source is NTDB, ID is 74 M/15, version n/a, n/a, scale 1:50000 Base data set 4: Source is NTDB, ID is 74 M/16, version n/a, n/a, scale 1:50000 Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1994 Range_of_Dates/Times: Beginning_Date: 1992 Ending_Date: 1994 Currentness_Reference: Field work years are 1992-1993. Compilation years are 1994. Status: Progress: Complete Maintenance_and_Update_Frequency: None Planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -111.000 East_Bounding_Coordinate: -110.000 North_Bounding_Coordinate: 60.000 South_Bounding_Coordinate: 59.500 Data_Set_G-Polygon: Data_Set_G-Polygon_Outer_G-Ring: G-Ring_Point: G-Ring_Latitude: 60.0000 G-Ring_Longitude: -110.2340 G-Ring_Point: G-Ring_Latitude: 60.0000 G-Ring_Longitude: -110.0000 G-Ring_Point: G-Ring_Latitude: 59.5000 G-Ring_Longitude: -110.0000 G-Ring_Point: G-Ring_Latitude: 59.5000 G-Ring_Longitude: -110.9784 G-Ring_Point: G-Ring_Latitude: 59.5000 G-Ring_Longitude: -111 G-Ring_Point: G-Ring_Latitude: 60.0000 G-Ring_Longitude: -111 G-Ring_Point: G-Ring_Latitude: 60.0000 G-Ring_Longitude: -110.4447 G-Ring_Point: G-Ring_Latitude: 60.0000 G-Ring_Longitude: -110.2340 Keywords: Theme: Theme_Keyword: geoscientificInformation Theme_Keyword: Geological and geophysical Theme_Keyword: Surficial geology Theme_Keyword_Thesaurus: None Place: Place_Keyword: Hooker Lake Place_Keyword: Colin Lake Place_Keyword: Corwall Lake Place_Keyword: Pans Lake Place_Keyword: Potts Lake Place_Keyword: Ashton Lake Place_Keyword: Charles Lake Place_Keyword: Mercredi Lake Place_Keyword: Andrew Lake Place_Keyword: Wallace Island Place_Keyword: Alberta Place_Keyword_Thesaurus: None Access_Constraints: None Use_Constraints: Her Majesty the Queen in Right of Canada 1999 For more information, please contact the Copyright Officer at the following address: ESS Copyright Officer Business Development Office Earth Sciences Sector 615 Booth St., Ottawa, Ontario K1A 0E9 Sa Majesté la Reine du chef du Canada 1999 Pour plus d'information, prière de communiquer avec le responsable du droit d'auteur à l'adresse suivante : Responsable du droit d'auteur du SST Bureau d'expansion des affaires Secteur des sciences de la Terre 615, rue Booth Ottawa (Ontario) K1A 0E9 Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jan Bednarski Contact_Organization: Geological Survey of Canada, Natural Resources Canada Contact_Address: Address_Type: Physical Address: 9860 West Saanich Road City: Sidney State_or_Province: British Columbia Postal_Code: V8L 4B2 Country: Canada Contact_Voice_Telephone: 250-363-6344 Contact_Facsimile_Telephone: 250-363-6565 Contact_Electronic_Mail_Address: jbednars@nrcan.gc.ca Data_Set_Credit: Affiliated with Canada/Alberta Partnership on Minerals. Digital cartography by Pratt, J. and West, T. Data_Quality_Information: Lineage: Source_Information: Source_Scale_Denominator: 100000 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 12 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -111.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000.0 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 2.0 Ordinate_Resolution: 2.0 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.25722209603690666513255949227 Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Mike Sigouin Contact_Organization: Natural Resources Canada Contact_Address: Address_Type: Physical Address: 601 Booth Street City: Ottawa State_or_Province: Ontario Postal_Code: K1A 0E8 Country: Canada Contact_Voice_Telephone: 613-943-0738 Contact_Facsimile_Telephone: 613-952-7308 Contact_Electronic_Mail_Address: msigouin@NRCan.gc.ca Resource_Description: Live Data and Maps Standard_Order_Process: Fees: None Metadata_Reference_Information: Metadata_Date: 20040826 Metadata_Future_Review_Date: 20090826 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Paul Huppé Contact_Organization: Natural Resources Canada Contact_Address: Address_Type: Physical Address: 601 Booth Street City: Ottawa State_or_Province: Ontario Postal_Code: V8L 4B2 Postal_Code: K1A 0E8 Country: Canada Contact_Voice_Telephone: 613-943-0996 Contact_Facsimile_Telephone: 613-995-2339 Contact_Electronic_Mail_Address: huppe@NRCan.gc.ca Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998