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TitleThe 2013 Isachsen expedition to Axel Heiberg Island, Nunavut, Canada: a field report
AuthorKingsbury, C G; Williamson, M -C; Day, S J; McNeil, R J
SourceGeological Society of America, Abstracts With Programs vol. 45, no. 7, 2013 p. 99
Year2013
Alt SeriesEarth Sciences Sector, Contribution Series 20130124
PublisherThe Geological Society of America (GSA)
Meeting125th Anniversary Annual Meeting & Expo, Geological Society of America; Denver; US; October 27-30, 2013
Documentserial
Lang.English
Mediapaper
RelatedThis publication is related to Kingsbury, C G; Williamson, M -C; Day, S J; McNeil, R J; (2014). The 2013 Isachsen expedition to Axel Heiberg Island, Nunavut, Canada: a field report, Geological Survey of Canada, Open File 7539
File formatpdf; html
ProvinceNunavut
NTS59G/05; 59G/06; 59G/07; 59G/10; 59G/11; 59G/12
AreaSouth Fiord; Axel Heiberg Island
Lat/Long WENS-96.0000 -93.0000 79.7500 79.2500
Subjectsgeophysics; hydrogeology; surficial geology/geomorphology; remote sensing; mapping techniques; computer mapping; bedrock geology; glacial features; glacial deposits; gossans; stream sediment samples; stream sediment geochemistry; remote predictive mapping
Programenvironmental impacts and adaptation in the northern environment, Environmental Geoscience
LinksOnline - En ligne
AbstractWe report the results of field work carried out in July 2013 to investigate (1) the mineralogy and geochemistry of oxide-sulphide gossans and their reactive zones in permafrost and (2) the style of emplacement, age and composition of igneous rocks associated with the Early Cretaceous Isachsen Formation (Environmental Geoscience Program, Natural Resources Canada; and PhD thesis project, Carleton University). The study area is located near South Fiord, western Axel Heiberg Island (N 79.372, W 93.639) in Mesozoic strata of the Sverdrup Basin. The objectives of the field campaign included: (1) ground truthing of remote predictive geologic maps based on Landsat-7 Thematic Mapper, SPOT-5 and ASTER satellite imagery; (2) mapping and sampling of bedrock that hosts oxide-sulphide gossans; and (3) stream sediment sampling in the vicinity of each gossan occurrence. Several types of gossans were identified and classified according to the type of host rock and internal stratigraphy of soils overlying permafrost. Bulk and silt samples were collected from local streams for comparative geochemical studies of bedrock, gossans and stream sediments. Mafic sills and dykes sampled over a large area that included the South Fiord peninsula were investigated as potential feeders for basaltic lava flows in the Early Cretaceous Isachsen Formation. Spatiotemporal and compositional links with the Canadian High Arctic Large Igneous Province (HALIP) and related circum-Arctic magmatism are also being considered. In this contribution, we discuss the complex field relationships between the volcanic successions, associated intrusive rocks, sedimentary host rocks, evaporite diapirs, and base metal gossans. These appear to be typical of the Isachsen Formation in the study area, and in the Strand Fiord-Expedition Fiord region as a whole. We discuss the wide range of analytical studies in progress, including applied reflectance spectroscopy of gossan soils, petrography and mineralogy, bedrock and stream sediment geochemistry, and geochronology.
Summary(Plain Language Summary, not published)
This conference abstract describes the objectives of a collaborative, multidisciplinary field campaign carried out in July 2013 on western Axel Heiberg Island, Nunavut. The poster presents an overview of the preliminary results of bedrock mapping, gossan and stream sediment surveys, and sampling strategies in view of laboratory analyses planned for the current fiscal year 2013-2014.
GEOSCAN ID292769