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TitleHALIP intrusions, contact metamorphism, and incipient diapirism of gypsum-carbonate sequences
DownloadDownload (whole publication)
AuthorBédard, J H; Troll, V; Deegan, F
SourceReport of activities for High Arctic Large Igneous Province (HALIP) - GEM 2 Western Arctic Region Project: bedrock mapping and mineral exploration; by Williamson, M -C (ed.); Geological Survey of Canada, Open File 7950, 2016 p. 3-13, (Open Access)
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
RelatedThis publication is contained in Williamson, M -C; (2016). Report of activities for High Arctic Large Igneous Province (HALIP) - GEM 2 Western Arctic Region Project: bedrock mapping and mineral exploration, Geological Survey of Canada, Open File 7950
File formatpdf
NTS49G; 59E; 59F; 59G; 59H; 120F; 340B; 340C; 340D; 340E; 340F; 560A; 560D
AreaEllesmere Island; Axel Heiberg Island; East Fiord
Lat/Long WENS -96.0000 -64.0000 83.5000 78.0000
Subjectsstratigraphy; economic geology; bedrock geology; igneous rocks; intrusive rocks; mineralization; volcanic rocks; nickel; copper; platinum; magmatism; sills; metamorphism; Strand Fiord Formation; HALIP; Sverdrup Basin; Isachsen Formation; Hassel Formation; Christopher Formation; White Glacier Basin; Mesozoic; Cretaceous; Jurassic; Triassic; Paleozoic
Illustrationslocation maps; photographs
ProgramGEM2: Geo-mapping for Energy and Minerals, Western Arctic, High Arctic LIP
Released2016 01 20
AbstractAs part of the High Arctic Large Igneous Province (HALIP) GEM2 project, five sets of HALIP-related intrusions and wallrocks were sampled for a regional-scale study of geochemical signatures indicative of PGE-Ni exploration potential. Investigation of a bedded gypsum-carbonate sequence revealed possible incipient diapiric structures with a wavelength of ~100 m and an amplitude of ~40 m. Incipient diapiric mass flow appears to be the result of a diagenetic (?) reaction between the two lithologies that generate large amounts of gas or fluid that brecciate wall rocks (decreasing strength) and increase volume (generating buoyancy). Several sample sections were collected through an oil-shale adjacent to a sill to better constrain the impact of HALIP intrusions on the basin's oil and gas potential, to quantify the volumes and species of environmentally significant gas species expelled, and to determine the impact of shale assimilation on magma chemistry and possible sulphide immiscibility.