Identification_Information: Citation: Citation_Information: Originator: Bednarski, J.M. Publication_Date: 2011 Title: Kwokullie Lake Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Open File Issue_Identification: 6562 Publication_Information: Publication_Place: Ottawa, Ontario Publisher: Geological Survey of Canada, Natural Resources Canada Other_Citation_Details: Recommended citation: Bednarski, J.M., 2011. Surficial geology, Kwokullie Lake, British Columbia; Geological Survey of Canada, Open File 6562, scale 1:50 000. doi:10.4095/289249 Online_Linkage: Description: Abstract: Kwokullie Lake map area (NTS 94P/07) covers the northeast part of the Etsho Plateau whose northern boundary is defined by a large meltwater channel that is now occupied by Kimea lake and creek at about 460 m above sea level (asl). The Kimea meltwater channel was cut by an ancestral Petitot River that flowed westward during deglaciation when the retreating Laurentide Ice Sheet still covered the land to the north. Prior to this time (ca. 25 000-11 000 years ago), the Laurentide Ice Sheet covered the entire map area with a dominant ice flow from the northeast. Etsho Plateau gradually rises to 720 m asl in the southeast quadrant of the map area and, although it offers some relief, most of the area is underlain by poorly-drained clayey till that is mantled by extensive organic deposits. Hummocky organic deposits containing ground various amounts of ground ice are common on the upper plateau, especially around Kwokullie and Desan lakes, where recent disturbances have led to thermokarst terrain. Glacial flutings and drumlins concentrated on the upstream flank of the Etsho Plateau indicate that at least two distinct ice lobes emanated from the ice sheet at some time after the glacial maximum. A persistent northern lobe was responsible for the widespread northeast ice flow however, in the southeast quadrant of the map area, it was deflected by a second lobe flowing westward up the plateau. A southwest-trending moraine system appears to mark the interlobate boundary. Subsequent episodic retreat of the two lobes is marked by groups of recessional moraines to the north and east. There are at least two main concentrations of recessional moraines on the northern flank of the plateau. Within these moraine concentrations, cross-cutting relationships are common, indicating that many stillstands and minor readvances of the northern lobe occurred as it thinned and retreated to the north. In general the end moraines are thin and rise above the boggy terrain with only a few metres of relief. They are composed mainly of till but, in places, they also contain discontinuous deposits of stratified material, with minor amounts of ice-thrust glaciofluvial and glaciolacustrine sediment. 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°39'E, changing 22'W annually. Magnetic declination at SW corner of map: 20°33'E, changing 21'W annually. Magnetic declination at NE corner of map: 20°30'E, changing 22'W annually. Magnetic declination at SE corner of map: 20°24'E, changing 21'W annually. Magnetic declination at center of map: 20°31'E, changing 21'W annually. Number of base data sets used: 1 Base data set 1: Source is NTDB, ID is 94 P/7, scale 1:50000 Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2006 Range_of_Dates/Times: Beginning_Date: 2003 Ending_Date: 2006 Currentness_Reference: Field work years are 2003-2005. Compilation years are 2006. Status: Progress: Complete Maintenance_and_Update_Frequency: None Planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -121 East_Bounding_Coordinate: -120.500 North_Bounding_Coordinate: 59.500 South_Bounding_Coordinate: 59.250 Data_Set_G-Polygon: Data_Set_G-Polygon_Outer_G-Ring: G-Ring_Point: G-Ring_Latitude: 59.5000 G-Ring_Longitude: -120.8537 G-Ring_Point: G-Ring_Latitude: 59.5000 G-Ring_Longitude: -120.5000 G-Ring_Point: G-Ring_Latitude: 59.2500 G-Ring_Longitude: -120.5000 G-Ring_Point: G-Ring_Latitude: 59.2500 G-Ring_Longitude: -121.0000 G-Ring_Point: G-Ring_Latitude: 59.4586 G-Ring_Longitude: -121.0000 G-Ring_Point: G-Ring_Latitude: 59.5000 G-Ring_Longitude: -121.0000 G-Ring_Point: G-Ring_Latitude: 59.5000 G-Ring_Longitude: -120.8537 Keywords: Theme: Theme_Keyword: geoscientificInformation Theme_Keyword: Geological and geophysical Theme_Keyword: Surficial geology Theme_Keyword_Thesaurus: None Place: Place_Keyword: Kwokullie Lake Place_Keyword: Pesh Creek Place_Keyword: Desan Lakes Place_Keyword: Sahdoanah Creek Place_Keyword: Kah Creek Place_Keyword: Kimea Lake Place_Keyword_Thesaurus: None Access_Constraints: None Use_Constraints: Her Majesty the Queen in Right of Canada 2011 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 2011 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: J.M. Bednarski Contact_Organization: GSC Pacific Contact_Address: Address_Type: Physical Address: 9860 West Saanich Road, P.O. Box 6000 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: Additional geology by Levson, V. and Ferbey, T. Digital cartography by Viner, D. Data_Quality_Information: Lineage: Source_Information: Source_Scale_Denominator: 50000 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: 10 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -123 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: 2.934 Ordinate_Resolution: 2.934 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: 615 Booth Street City: Ottawa State_or_Province: Ontario Postal_Code: K1A 0E9 Country: Canada Contact_Voice_Telephone: 613-943-0738 Contact_Facsimile_Telephone: 613-944-6749 Contact_Electronic_Mail_Address: msigouin@NRCan.gc.ca Resource_Description: Live Data and Maps Standard_Order_Process: Fees: None Metadata_Reference_Information: Metadata_Date: 20110331 Metadata_Future_Review_Date: 20160331 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Paul Huppé Contact_Organization: Natural Resources Canada Contact_Address: Address_Type: Physical Address: 615 Booth Street City: Ottawa State_or_Province: Ontario Postal_Code: K1A 0E9 Country: Canada Contact_Voice_Telephone: 613-943-0996 Contact_Facsimile_Telephone: 613-995-2520 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