Identification_Information: Citation: Citation_Information: Originator: Plouffe, A. Publication_Date: 2009 Title: Loon Lake Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Open File Issue_Identification: 5933 Publication_Information: Publication_Place: Ottawa, Ontario Publisher: Geological Survey of Canada, Natural Resources Canada Other_Citation_Details: Recommended citation: Plouffe, A. 2009: Surficial geology, Loon Lake, British Columbia; Geological Survey of Canada, Open File 5933, scale 1:50 000. Online_Linkage: Description: Abstract: The Loon Lake map area (92P/03) dominantly lies within the Thompson Plateau of south central British Columbia. It is a region of rolling topography with an average elevation of approximately 1200 m above sea level. Most of the region drains to the west and south via Loon Creek and Bonaparte River which are tributaries of Thompson River to the south. The region is predominantly underlain by till which consists of a poorly sorted diamicton with clasts of all size. Bedrock outcrops are rare and limited in extent. Till is overlain in places by glaciofluvial sediments which were deposited in meltwater streams at the end of the last glaciation. Glaciolacustrine sediments, deposited in glacial lakes which formed at the end of the last glaciation, were only mapped along the eastern boundary of the map sheet, northeast of Hihium Lake. Lacustrine sediments are present at the periphery of modern lakes throughout the map area. These were deposited at a time when the lakes occupied a higher level. Modern streams sediments (alluvium) are present in extent large enough to be mapped in some of the valleys. Colluvial deposits are mapped on steep slopes and are predominantly present in the Bonaparte River, Loon Lake, and Loon Creek valleys. During the last glaciation, probably at glacial maximum, ice was dominantly moving to the south southeast as recorded by flutings, crag-and-tails and drumlins. However, an earlier phase of ice flow to the southwest is recorded from the glacial striations. The Bonaparte River and Loon Lake valleys were in large part eroded by glacial meltwater during the last glaciation. Two meltwater channels one which starts east of Chasm in the northwest corner of the map area and a second one in the Wohlleben Creek valley might have formed in a subglacial position because glaciofluvial sediments including eskers are present in their upstream region. The meltwater channel which extends south of Chasm was greatly enlarged by postglacial landslides. 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: 18°0'E, changing 13.9'W annually. Magnetic declination at SW corner of map: 17°55'E, changing 13.7'W annually. Magnetic declination at NE corner of map: 17°54'E, changing 13.9'W annually. Magnetic declination at SE corner of map: 17°49'E, changing 13.7'W annually. Magnetic declination at center of map: 17°54'E, changing 13.8'W annually. Number of base data sets used: 1 Base data set 1: Source is B.C. Trim data, ID is unknown, version unknown, unknown, scale 1:50000 Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2008 Range_of_Dates/Times: Beginning_Date: 2007 Ending_Date: 2008 Currentness_Reference: Field work years are 2007. Compilation years are 2008. Status: Progress: Complete Maintenance_and_Update_Frequency: None Planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -121.500 East_Bounding_Coordinate: -121 North_Bounding_Coordinate: 51.250 South_Bounding_Coordinate: 51 Data_Set_G-Polygon: Data_Set_G-Polygon_Outer_G-Ring: G-Ring_Point: G-Ring_Latitude: 51.2500 G-Ring_Longitude: -121.2082 G-Ring_Point: G-Ring_Latitude: 51.2500 G-Ring_Longitude: -121.0000 G-Ring_Point: G-Ring_Latitude: 51.0000 G-Ring_Longitude: -121.0000 G-Ring_Point: G-Ring_Latitude: 51.0000 G-Ring_Longitude: -121.5000 G-Ring_Point: G-Ring_Latitude: 51.2500 G-Ring_Longitude: -121.5000 G-Ring_Point: G-Ring_Latitude: 51.2500 G-Ring_Longitude: -121.2082 Keywords: Theme: Theme_Keyword: geoscientificInformation Theme_Keyword: Geological and geophysical Theme_Keyword: Surficial geology Theme_Keyword_Thesaurus: None Place: Place_Keyword: Upper Loon Lake Place_Keyword: Tobacco Creek Place_Keyword: Dougherty Lake Place_Keyword: Thunder Creek Place_Keyword: Sixtyone Creek Place_Keyword: Wohlleben Creek Place_Keyword: Bonaparte River Place_Keyword: East Twin Creek Place_Keyword: West Twin Creek Place_Keyword: Loon Creek Place_Keyword: Hihium Creek Place_Keyword: Hihium Lake Place_Keyword: Loon Lake Place_Keyword: British Columbia Place_Keyword_Thesaurus: None Access_Constraints: None Use_Constraints: Her Majesty the Queen in Right of Canada 2009 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 2009 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: Alain Plouffe 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: 613-995-4390 Contact_Facsimile_Telephone: 613-992-0190 Contact_Electronic_Mail_Address: APlouffe@nrcan-rncan.gc.ca Data_Set_Credit: Digital cartography by Coulthart, M.J. 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: -123.0 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: 35.22 Ordinate_Resolution: 35.22 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 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: 20090528 Metadata_Future_Review_Date: 20140528 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