Identification_Information: Citation: Citation_Information: Originator: Kerr, D.E Originator: Ward, B.C Originator: Dredge, L.A. Publication_Date: 2000 Title: Contwoyto Lake Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: A Series Issue_Identification: 1978 Publication_Information: Publication_Place: Ottawa, Ontario Publisher: Geological Survey of Canada, Natural Resources Canada Other_Citation_Details: Recommended citation: Kerr, D.E, Ward, B.C, and Dredge, L.A. 2000: Surficial geology, Contwoyto Lake, Northwest Territories–Nunavut; Geological Survey of Canada, Map 1978A, scale 1:125 000. Online_Linkage: Description: Abstract: Ongoing geological exploration and related infrastructure development in central and northern Slave Geological Province have resulted in the need for a wide range of baseline information. In response, Terrain Sciences Division initiated regional surficial geology mapping through the Slave Province National Mapping Program (NATMAP) to provide fundamental regional data on surficial materials and till geochemistry. In 1994, Terrain Sciences Division undertook mapping of the south half of the Contwoyto Lake map area (NTS 76E). As an extension to Slave NATMAP, surficial geology mapping continued in 1996 in the north half of the Contwoyto Lake map area, east and north of recently mapped 1:250 000 sheet (Kerr et al., 1995, 1997a). The project involved helicopter-assisted ground work including terrain mapping, till sampling, pebble provenance studies, measurement of ice flow indicators, and recording permafrost features. Field traverses and airphoto interpretation provided information on the nature and distribution of surficial materials shown on the map. Till samples (1 Kg) were collected from hand-dug pits at 219 sites for textural analysis and trace element geochemistry; 52 bulk till samples (10 Kg) were collected for regional kimberlite indicator mineral analysis and gold grain analysis; pebbles (2 to 6 cm diameter) were collected from the till sample pits to assess glacial transport distances and ice flow patterns. Surficial geology was plotted on 1:60 000 scale airphotos and recompiled at 1:125 000 on a topographic base. This map supersedes previous surficial geology maps of this area (Hart et al., 1989; Ward et al., 1995; Kerr et al., 1997b). Ward et al. (1996a, b), Kerr et al. (1998, 1999) present the results of regional till geochemistry and kimberlite indicator mineral analyses. The regional glacial geology was first presented by Blake (1963). Subsequent bedrock mapping projects included brief comments regarding glacial geology (Bostock, 1966, 1980; Tremblay, 1966, 1967, 1976), and associated reconnaissance till geochemistry in the Lupin area is summarized in Coker et al. (1992). 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: 25°8'E, changing 32'W annually. Magnetic declination at SW corner of map: 24°28'E, changing 29.2'W annually. Magnetic declination at NE corner of map: 23°20'E, changing 31.6'W annually. Magnetic declination at SE corner of map: 22°46'E, changing 28.9'W annually. Magnetic declination at center of map: 23°58'E, changing 30.4'W annually. Proximity of the North Magnetic Pole causes the compass to be erratic in this area. Number of base data sets used: 1 Base data set 1: Source is NTDB, ID is 76E, scale 1:250000 Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1996 Range_of_Dates/Times: Beginning_Date: 1994 Ending_Date: 1996 Currentness_Reference: Field work years are 1994-1996. Compilation years are 1994-1996. Status: Progress: Complete Maintenance_and_Update_Frequency: None Planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -112.000 East_Bounding_Coordinate: -110.000 North_Bounding_Coordinate: 66.000 South_Bounding_Coordinate: 65.000 Data_Set_G-Polygon: Data_Set_G-Polygon_Outer_G-Ring: G-Ring_Point: G-Ring_Latitude: 66.0001 G-Ring_Longitude: -111.3713 G-Ring_Point: G-Ring_Latitude: 66.0000 G-Ring_Longitude: -110.0000 G-Ring_Point: G-Ring_Latitude: 65.0001 G-Ring_Longitude: -110.0000 G-Ring_Point: G-Ring_Latitude: 65.0000 G-Ring_Longitude: -112.0000 G-Ring_Point: G-Ring_Latitude: 65.0349 G-Ring_Longitude: -112.0000 G-Ring_Point: G-Ring_Latitude: 66.0000 G-Ring_Longitude: -112.0000 G-Ring_Point: G-Ring_Latitude: 66.0001 G-Ring_Longitude: -111.3713 Keywords: Theme: Theme_Keyword: geoscientificInformation Theme_Keyword: Geological and geophysical Theme_Keyword: Surficial geology Theme_Keyword_Thesaurus: None Place: Place_Keyword: Peacock Hills Place_Keyword: Lupin Place_Keyword: Northwest Territories Place_Keyword: Contwoyto Lake Place_Keyword: Fry Inlet Place_Keyword: Eda Lake Place_Keyword: Yamba Lake Place_Keyword: Nunavut Place_Keyword_Thesaurus: None Access_Constraints: None Use_Constraints: Her Majesty the Queen in Right of Canada 2000 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 2000 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: Daniel Kerr Contact_Organization: Natural Resources Canada Contact_Address: Address_Type: Physical Address: 601 Booth Street, 1st Floor, Room. 124 City: Ottawa State_or_Province: Ontario Postal_Code: K1A 0E8 Country: Canada Contact_Voice_Telephone: (613) 995-4523 Contact_Facsimile_Telephone: (613) 992-0190 Contact_Electronic_Mail_Address: Daniel.Kerr@nrcan-rncan.gc.ca Data_Set_Credit: Additional geology by Adams, J., Caddel, M., Roberts, R. and Wolfe, S.A. Affiliated with NATMAP Slave Province Project and Polar Continental Shelf Projects 1-94 and 003-96. Digital cartography by Allard, R. Data_Quality_Information: Lineage: Source_Information: Source_Scale_Denominator: 125000 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: 6.10 Ordinate_Resolution: 6.10 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: 20050209 Metadata_Future_Review_Date: 20100209 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: K1A 0E8 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