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TitleGround ice volumes determined from shallow cores from western Fosheim Peninsula, Ellesmere Island, Northwest Territories
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorHodgson, D A; Nixon, F M
SourceGeological Survey of Canada, Bulletin 507, 1998, 178 pages, Open Access logo Open Access
PublisherNatural Resources Canada
Mediapaper; on-line; digital
File formatpdf
NTS49G/09; 49G/10; 49G/15; 49G/16; 340B/03; 340B/04; 340B/05
AreaFosheim Peninsula; Eureka; Slidre Fiord; Ellesmere Island
Lat/Long WENS-87.0000 -83.5000 80.3333 79.5000
Subjectssurficial geology/geomorphology; ground ice; cores; boreholes; Holocene; permafrost; tills; glacial deposits; Quaternary
Illustrationssketch maps; core logs
Released1998 04 01; 2015 12 17
AbstractA mean ice content of 53 per cent was estimated for 152 boreholes drilled to depths of 1 to 8 m on Fosheim Peninsula. Visual estimates were supplemented with a few laboratory measurements. Cores were obtained from raised marine sediments, weathered clastic rock, till, and peat. The majority of boreholes were in clay- to sand-sized Holocene marine-deltaic deposits (64 per cent ice); one third of these boreholes were in frost-fissure troughs (84 per cent ice). Frost fissures occupy 25 per cent by volume of the upper 2 m of marine fines. Polygon centres were underlain by 47 per cent ice, which included some massive ice lying between marine veneer and shale. For weathered rock (38 per cent ice), the finer material was generally more icy than the coarse, except for some clay shale showing no visible ice. No difference was observed in ice content of rock above and below marine limit. Sites disturbed by compaction or scraping were depressed by thaw of ice-wedge tops and other segregated ice. Generally, if the frost table was lowered, then liquefaction of fine grained sediments would occur.

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