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TitleSeismic shothole drillers' lithostratigraphic logs: unearthing a wealth of regional geoscience information in northwestern Canada
AuthorSmith, I R
SourceGeophysical Research Letters vol. 6, 2015 p. 21-29, https://doi.org/10.1016/j.grj.2015.01.005
Year2015
Alt SeriesEarth Sciences Sector, Contribution Series 20140297
PublisherElsevier
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf
ProvinceNorthwest Territories; Nunavut; Yukon
NTS85; 86; 87A; 87B; 87C; 87D; 87E/01; 87E/02; 87E/03; 87E/04; 87F/01; 87F/02; 95; 96; 97A; 97B; 97C; 97D; 97F/04; 97F/05; 105A; 105B/01; 105B/02; 105B/07; 105B/08; 105B/09; 105B/10; 105B/15; 105B/16; 105G/01; 105G/02; 105G/07; 105G/08; 105G/09; 105G/10; 105G/15; 105G/16; 105H; 105I; 105J/01; 105J/02; 105J/07; 105J/08; 105J/09; 105J/10; 105J/15; 105J/16; 105O/01; 105O/02; 105O/07; 105O/08; 105O/09; 105O/10; 105O/15; 105O/16; 105P; 106; 107A; 107B; 107C; 107D; 107E/01; 107E/02; 107E/03; 107E/08; 116A; 116B; 116C/01; 116C/02; 116C/07; 116C/08; 116C/09; 116C/10; 116C/15; 116C/16; 116F/01; 116F/02; 116F/07; 116F/08; 116F/09; 116F/10; 116F/15; 116F/16; 116G; 116H; 116I; 116J; 116K/01; 116K/02; 116K/07; 116K/08; 116K/09; 116K/10; 116K/15; 116K/16; 116N/01; 116N/02; 116N/07; 116N/08; 116N/09; 116N/10; 116N/15; 116N/16; 116O; 116P; 117A; 117B/01; 117B/08; 117B/09; 117B/16; 117C/01; 117C/08; 117C/09; 117C/16; 117D
Lat/Long WENS-141.0000 -112.0000 71.0000 60.0000
Subjectseconomic geology; geophysics; general geology; surficial geology/geomorphology; regional geology; seismic interpretations; seismic surveys; seismic data; bedrock geology; groundwater; permafrost; ground ice; drift deposits; till stratigraphy; ice thickness; health hazards; aggregates; structural analyses; petroleum exploration; Seismic shothole logs
Illustrationsdrill logs; graphs; location maps; geological maps; Landsat images
ProgramMackenzie Corridor, Shield to Selwyn, GEM2: Geo-mapping for Energy and Minerals
AbstractSeismic shothole drillers' logs, record the near-surface (avg. 18.6 m deep) lithostratigraphy encountered when drilling holes to place explosive charges. These records offer a largely unrecognized wealth of geoscience information in areas for which little may be otherwise known. Stored in the Basic Files archives of petroleum exploration and seismic acquisition companies, this study first convinced companies of the potential utility of this data, then recovered the hard copy and digitally scanned records (paper, fiche, microfilm) and rendered these into a digital database and GIS. The final database of 343,989 records provides the largest source of geoscience information of its kind in northwestern Canada, and in many cases contains unique and original records on a host of subjects including surficial-, bedrock-, and hydro-geology, permafrost, and geohazards. The drillers' log records have further been used to create geospatial models of drift, till, muskeg, massive ice and ground ice thicknesses, and continue to be applied to new avenues of research such as temporal variations of bottomfast ice extents in offshore shallow marine environments. Published in freely downloadable Geological Survey of Canada Open File reports and providing commonly used database and GIS file formats, this data rescue exercise preserves and greatly enhances what was becoming an increasingly discarded corporate data set of unrecognized potential.
Summary(Plain Language Summary, not published)
This article is submitted to the on-line journal GeoResJ as part of its special issue "Rescuing Legacy Data for Future Science." The article reviews and summarizes a collection of 343 989 seismic shothole drillers' logs (and 12 GSC Open-File thematic publications based thereon) constructed from a forgotten card-file archive at the GSC and the entire archival holdings of all (23) petroleum and seismic exploration companies historically and presently active in NWT and Yukon . The drillers¿ logs recorded sediment types, thicknesses and other characteristics and provide invaluable information relevant to all manner of infrastructure and resource development in northwestern Canada (e.g., granular aggregate resources, permafrost and ground ice, geohazards, drift thickness). This research took a disregarded data source of formerly unrecognized potential and established a comprehensive ¿state-of-knowledge¿ synthesis
GEOSCAN ID295514