Identification_Information: Citation: Citation_Information: Originator: Utting, D.J. Originator: Huscroft, C.A. Publication_Date: 2008 Title: Conn Lake (northwest) Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Open File Issue_Identification: 5612 Publication_Information: Publication_Place: Ottawa, Ontario Publisher: Geological Survey of Canada, Natural Resources Canada Other_Citation_Details: Recommended citation: Utting, D.J. and Huscroft, C.A. 2008: Surficial geology, Conn Lake (northwest), Baffin Island, Nunavut; Geological Survey of Canada, Open File 5612, scale 1:100 000. Online_Linkage: Description: Abstract: OF5612 The surficial materials in the northwest portion of the Conn Lake map area relate to glaciation and include deglacial landforms and deposits. The upland areas are predominantly exposed bedrock and till. Some of the till deposits have large permafrost polygons. The valleys are dominated by deglacial features, such as meltwater channels and ice dammed lake deposits. The Isortoq River valley contained a large glacial lake that formed along a retreating paleo-Barnes Ice Cap margin. The retreating margin formed hundreds of De Geer (or cross-valley) moraines that dominate the geomorphology of the valley. Some small glaciers still exist in the map area; the extent of their recent retreat is evident from their margins mapped from aerial photographs (ca. 1958) and Landsat imagery (ca. 2000). 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: 42°22'W, changing 48.9'E annually. Magnetic declination at SW corner of map: 40°43'W, changing 46.7'E annually. Magnetic declination at NE corner of map: 43°24'W, changing 48.1'E annually. Magnetic declination at SE corner of map: 41°50'W, changing 46.1'E annually. Magnetic declination at center of map: 42°6'W, changing 47.5'E 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 C. Gilbert (supplied by author), ID is n/a, version n/a, n/a Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2007 Range_of_Dates/Times: Beginning_Date: 2005 Ending_Date: 2007 Currentness_Reference: Field work years are 2005. Compilation years are 2005-2007. 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Utting Contact_Organization: Natural Resources Canada Contact_Address: Address_Type: Physical Address: City: State_or_Province: Postal_Code: Country: Contact_Voice_Telephone: Contact_Facsimile_Telephone: Contact_Electronic_Mail_Address: Data_Set_Credit: Digital cartography by Dohar, J.L. 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