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Record #96893:
Massive ice: some field criteria for the identification of ice types / J. Ross Mackay.
Title: | Massive ice: some field criteria for the identification of ice types / J. Ross Mackay. |
Author(s): | Mackay, J. Ross. |
Date: | 1989. |
Publisher: | Ottawa: Geological Survey of Canada |
In: | Geological Survey of Canada. Paper. (1989.), Vol. 89-1G (1989) |
Abstract: | Ice bodies in permafrost, referring to examples from west coast of Tuktoyaktuk peninsula and associated islands. Important criteria are whether ice contacts are gradational or sharp, conformable or nonconformable, thaw or erosional, primary or secondary. Close-up examination of bubbles in ice, just below contact, can differentiate between buried or segregated ice. Dykes and sills of intrusive ice transecting massive ice or overburden appear associated with segregated ice. Orientation of reticulate ice veins above contact can help in identification of ice types. |
Notes: | Geological Survey of Canada. Paper. Vol. 89-1G :5-11 (1989). |
Keywords: | 551.345.3 -- Permafrost, composition and structure. Ice wedges. E8 -- Glaciology: frost action and permafrost. (*41) -- Canada. (*470) -- Mackenzie District. (*440) -- Northwest Territories. |
SPRI record no.: | 96893 |
LDR 01448naa#a2200000#a#4500 001 SPRI-96893 005 20230323202929.0 007 ta 008 230323s1989####oncab#|##|###|0||#0|eng#d 035 ## ‡aSPRI-96893 040 ## ‡aUkCU-P‡beng‡eaacr 100 1# ‡aMackay, J. Ross. 245 10 ‡aMassive ice :‡bsome field criteria for the identification of ice types /‡cJ. Ross Mackay. 260 ## ‡aOttawa :‡bGeological Survey of Canada,‡c1989. 300 ## ‡ap. 5-11 :‡bill., diag., map. 500 ## ‡aGeological Survey of Canada. Paper. Vol. 89-1G :5-11 (1989). 520 3# ‡aIce bodies in permafrost, referring to examples from west coast of Tuktoyaktuk peninsula and associated islands. Important criteria are whether ice contacts are gradational or sharp, conformable or nonconformable, thaw or erosional, primary or secondary. Close-up examination of bubbles in ice, just below contact, can differentiate between buried or segregated ice. Dykes and sills of intrusive ice transecting massive ice or overburden appear associated with segregated ice. Orientation of reticulate ice veins above contact can help in identification of ice types. 650 07 ‡a551.345.3 -- Permafrost, composition and structure. Ice wedges.‡2udc 650 07 ‡aE8 -- Glaciology: frost action and permafrost.‡2local 651 #7 ‡a(*41) -- Canada.‡2udc 651 #7 ‡a(*470) -- Mackenzie District.‡2udc 651 #7 ‡a(*440) -- Northwest Territories.‡2udc 773 0# ‡7nnas ‡tGeological Survey of Canada. Paper. ‡gVol. 89-1G (1989) ‡wSPRI-16499 917 ## ‡aUnenhanced record from Muscat, imported 2019 948 3# ‡a20230323