Identification_Information: Citation: Citation_Information: Originator: Huscroft, C.A. Publication_Date: 2009 Title: Mahood Lake Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Open File Issue_Identification: 6172 Publication_Information: Publication_Place: Ottawa, Ontario Publisher: Geological Survey of Canada, Natural Resources Canada Other_Citation_Details: Recommended citation: Huscroft, C.A. 2009: Surficial geology, Mahood Lake, British Columbia; Geological Survey of Canada, Open File 6172, scale 1:50 000. Online_Linkage: Description: Abstract: The Mahood Lake map area (92P/16) straddles the contact between the Shuswap and Quesnel highlands of south central British Columbia. It is a mountainous region with an average elevation above 1300 m above sea level. Part of the map area is located within the Wells Gray Provincial Park. Most of the region drains to the east and south via Clearwater River which is a tributary 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 exposures are large and continuous on top of mountains and on certain hill sides. 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 within a meltwater channel north of Murtle River. Lacustrine sediments are present at the periphery of modern lakes. These were deposited at a time when the lakes occupied a higher level. Modern stream 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 Mahood Lake and Clearwater River 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 west to southwest was recorded from the glacial striation record observed in adjacent map areas. The drumlins oriented south-westerly in the Pendleton Lake valley attest to this first phase of ice-flow. A number of landslides have been mapped in the region indicating the potential for this natural hazard on some of the steep slopes. 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°4'E, changing 14.5'W annually. Magnetic declination at SW corner of map: 17°59'E, changing 14.3'W annually. Magnetic declination at NE corner of map: 17°57'E, changing 14.5'W annually. Magnetic declination at SE corner of map: 17°52'E, changing 14.3'W annually. Magnetic declination at center of map: 17°58'E, changing 14.4'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: -120.500 East_Bounding_Coordinate: -120.000 North_Bounding_Coordinate: 52.000 South_Bounding_Coordinate: 51.750 Data_Set_G-Polygon: Data_Set_G-Polygon_Outer_G-Ring: G-Ring_Point: G-Ring_Latitude: 52.0000 G-Ring_Longitude: -120.0475 G-Ring_Point: G-Ring_Latitude: 52.0000 G-Ring_Longitude: -120.0000 G-Ring_Point: G-Ring_Latitude: 51.7500 G-Ring_Longitude: -120.0000 G-Ring_Point: G-Ring_Latitude: 51.7500 G-Ring_Longitude: -120.4870 G-Ring_Point: G-Ring_Latitude: 51.7500 G-Ring_Longitude: -120.5000 G-Ring_Point: G-Ring_Latitude: 52.0000 G-Ring_Longitude: -120.5000 G-Ring_Point: G-Ring_Latitude: 52.0000 G-Ring_Longitude: -120.1472 G-Ring_Point: G-Ring_Latitude: 52.0000 G-Ring_Longitude: -120.0475 Keywords: Theme: Theme_Keyword: geoscientificInformation Theme_Keyword: Geological and geophysical Theme_Keyword: Surficial geology Theme_Keyword_Thesaurus: None Place: Place_Keyword: Murtle River Place_Keyword: Corsica Lake Place_Keyword: Italia Lake Place_Keyword: Sicily Lake Place_Keyword: Patricia Lake Place_Keyword: Mann Creek Place_Keyword: Moira Lake Place_Keyword: Efdee Lake Place_Keyword: Sock Lake Place_Keyword: First Canyon Creek Place_Keyword: Second Canyon Creek Place_Keyword: Third Canyon Creek Place_Keyword: Ordschig Creek Place_Keyword: Duncan Creek Place_Keyword: Shook Brook Place_Keyword: Battle Creek Place_Keyword: Philip Creek Place_Keyword: Clover Creek Place_Keyword: Hemp Creek Place_Keyword: Pyramid Mountain Place_Keyword: Lizard Head Mountain Place_Keyword: Helmcken Canyon Place_Keyword: Green Mountain Place_Keyword: Mount Mahood Place_Keyword: Swayback Ridge Place_Keyword: Blackwater Creek Place_Keyword: Flourmill Creek Place_Keyword: Jonah Lake Place_Keyword: Quesnel Highland Place_Keyword: Spanish Creek Place_Keyword: Pendleton Lakes Place_Keyword: Clearwater River Place_Keyword: Mahood 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: Alain.Plouffe@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: 33.281 Ordinate_Resolution: 33.281 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: 20091207 Metadata_Future_Review_Date: 20141207 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