METADATA METADATA Title: Drift Isopach Map, Sambaa K'e Candidate Protected Area, Northwest Territories. GSC Open File 6045 Originator: Smith, I.R., Lesk-Winfield, K. Publication_Date: 2009 Presentation_Form: CD-ROM Series_Name: Open File Issue_Identification: 6045 Publication_Place: Ottawa, Ontario, Canada Publisher: Geological Survey of Canada Citation_Details: Smith, I.R., Lesk-Winfield, K. 2009: Drift Isopach Map, Sambaa K'e Candidate Protected Area, Northwest Territories; Geological Survey of Canada, Open File 6045, 1 CD. Abstract: This publication presents a model of interpolated and minimum estimates of drift thickness overlying bedrock. Drift refers to all unconsolidated earth materials, and largely comprises glacial sediments of Late Wisconsinan age. Understanding the extent and thickness of the regional drift cover is important to studies of landslides, hydrogeology, permafrost and massive ground ice distribution, and drift geochemical exploration. Data used in the drift isopach model is principally derived from 31,171 seismic shothole drillers’ logs (Smith et al., 2007; Smith and Lesk-Winfield, in press). These lithostratigraphic logs were created during geotechnical seismic exploration when holes were drilled to set explosive charges. A secondary source of data, 121 points from Janicki’s (2005) formation top well database, were also included, as were 33 data points from the borehole geotechnical database (Smith et al., 2005). The Sambaa K’e Candidate Protected Area is characterized by thick (>14 m) drift mantling much of the upland region surrounding Trout Lake. The drift appears to be principally till, a heterogeneous mixture comprised of a matrix of clay and fine-silt, with minor sand, enclosing a variable but minor amount of clast and boulder material. Many of the seismic shothole drillers’ log records identify what are interpreted to be two till facies, similar to that observed by Smith in field studies in the adjoining areas of British Columbia and Alberta; a lower “blue” till containing high percentages of locally quarried shale bedrock, and an upper “brown” till containing less shale and more far-travelled clastic sedimentary and Canadian-Shield igneous and metamorphic bedrock-derived sediments and clasts. Drift thicknesses south of the Mackenzie River in the northeastern regions of the Candidate Protected Area are generally thinner (<8 m) and may relate to enhanced glacial entrainment of debris under compressive, southwestward-oriented flow during glacial advance. It is likely that this area also underwent scouring by proglacial rivers along northeastward retreating ice margins during deglaciation. Purpose: Produced as part of the Secure Canadian Energy Supply Program, Northern Energy Development - Mackenzie Valley Pipeline project and Program of Energy Research and Development(PERD) Pipelines Program 1.2.5 Supplemental_Information: Database and GIS constructed from individual seismic shothole drillers’ records, formation top well log records, and geotechnical borehole log records providing lithostratigraphic information on shallow (~<20 m) unconsolidated drift materials and bedrock. Data extents through the southern Mackenzie corridor, NWT, covering parts or all of NTS map areas 85D, 85E, 95A, 95B, 95G and 95H. Language: English Beginning_Date: 2008 Ending_Date: 2009 Progress: Complete Maintenance_and_Update_Frequency: As needed West_Bounding_Coordinate: -123.00 East_Bounding_Coordinate: -119.00 North_Bounding_Coordinate: 62.00 South_Bounding_Coordinate: 60.00 Theme_Keyword: Drift Isopach Map Theme_Keyword Thesaurus: bedrock, bedrock geology, borehole, boulders, candidate protected area, cemented gravel, clay, database, drift, drift isopach, environmental impact assessment, frontier exploration, frozen, GIS, geographic information system, Geological Survey of Canada, geology, geophysical seismic exploration, geotechnical, glacial deposits, glaciation, granular aggregate, gravel, GSC, hydrogeology, ice, ice lenses, inverse distance weighting, isopach, land use classification, landslide, LID_extension, limestone, Line_name, litholog, lithostratigraphy, Mackenzie Valley pipeline, MGP, muskeg, NTS, national topographic system, NRCAN, Natural Resources Canada, PERD, permafrost, petroleum exploration, pipeline, Program of Energy Research and Development, protected area, Quaternary, resource assessment, rock, rocks, sand, sandstone, Secure Canadian Energy Supply Program,  sedimentology, seismic shothole, shale, silt, shot hole, shothole, shothole database, stratigraphy,  subsurface deposits, surficial geology, Tertiary, thermokarst, till, till veneer, unique identifier, UID, unconsolidated material, water, 1:250 000, Amoco Canada Petroleum Company Limited, Atlantic Richfield Canada Limited, Canada Cities Services Limited, Canada Southern Petroleum Limited, Chevron Canada Limited, Devon Canada Corporation, Explor Data Limited, Imperial Oil Limited, Mobil Oil Canada Limited, Northern Oil Explorers Limited, NSM Resources Limited, Olympic Seismic Limited, Pacific Petroleum Limited, Petro-Canada Exploration, Petro-Canada, Petrofina Canada Limited, Purcell Energy Limited, Sulpetro Limited, Texaco Canada Limited, United Canso Oil & Gas Limited Place_Keyword: Northwest Territories. Place_Keyword_Thesaurus: NTS sheets: 85D, 85E, 95A, 95B, 95G, 95H, Northwest Territories, NWT, Mackenzie corridor, Mackenzie River, Mackenzie Valley, Canada, Fort Simpson, Jean Marie River, Sambaa K’e, Sambaa K’e Candidate Protected Area, Trout Lake      Use_Constraints: ©Her Majesty the Queen in Right of Canada, 2009 Browse_Graphic_File_Name: OF6045_demo.pmf Browse_Graphic_File_Description: ESRI ArcReader viewable map Browse_Graphic_File_Type: published map file (PMF) document Point_of_Contact: Dr. I. Rod Smith Contact_Organization: Geological Survey of Canada, Calgary Address_Type: mailing and physical Address: 3303-33rd Street N.W. City: Calgary Province: Alberta Postal_Code: T2L 2A7 Voice_Telephone: (403)292-7132 Facsimile_Telephone: (403)292-5377 E-mail: rodsmith@NRCan.gc.ca Distributor_Contact: Bookstore Contact_Organization: Geological Survey of Canada Address_Type: mailing and physical Address: Sales and Distribution, 180 – 615 Booth Street City: Ottawa Province: Ontario Postal_Code: K1A 0E9 Voice_Telephone: (613)995-4342 Toll-free (Canada and U.S.A.): 1-888-252-4301 Facsimile_Telephone: (613)943-0646 E-mail: gscbookstore@NRCan.gc.ca Metadata_Contact: Head Geoinformatics Contact_Organization: Geological Survey of Canada, Calgary Address_Type: mailing and physical Address: 3303-33rd Street N.W. City: Calgary Province: Alberta Postal_Code: T2L 2A7 Voice_Telephone: (403)292-7000 Facsimile_Telephone: (403)292-4961 E-mail: GSCC_datainfo@NRCan.gc.ca Metadata_Future_Review_Date: As the open file is updated Metadata_Date: April, 2009