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TitleGeology of the northeastern Niddery Lake map area, east-central Yukon and adjacent Northwest Territories
AuthorCecile, M P
SourceGeological Survey of Canada, Bulletin 553, 2000, 122 pages,
PublisherNatural Resources Canada (Ottawa)
Mediapaper; on-line; digital
File formatpdf
ProvinceYukon; Northwest Territories
NTS105O/07; 105O/08; 105O/09; 105O/10; 105O/15; 105O/16
AreaKeele Lake; Twitya River; Hess River; Algae Lake; Hawthorne Creek; Hailstone Creek; Selwyn Valley
Lat/Long WENS-131.0000 -130.0000 64.0000 63.3333
Subjectspaleontology; stratigraphy; structural geology; stratigraphic correlations; stratigraphic models; stratigraphic analyses; stratigraphic nomenclature; lithology; structural features; faults; faults, strike-slip; faults, thrust; metamorphism; metamorphism, regional; mineralization; mineral occurrences; facies; fossils; folds; Upper Cretaceous; bedrock geology; tectonostratigraphic zones; field relations; fossil descriptions; Algae Formation; Narchilla Formation; Backbone Ranges Formation; Sekwi Formation; Gull Lake Formation; Old Cabin Formation; Road River Formation; Road River Group; Hess River Formation; Rabbitkettle Formation; Duo Lake Formation; Marmot Formation; Rogue Décollement Complex; Elmer Creek Formation; Steel Formation; Grizzly Bear Formation; Hailstone Formation; Sapper Formation; Canol Formation; Imperial Formation; Earn Group; Misfortune Formation; Thor Hills Formation; Tsichu Group; Hawthorne Creek Formation; Heritage Trail Formation; Keele Creek Formation; Caribou Pass Formation; Fourway Formation; Mackenzie Fold Belt; Elmer Creek Thrust; Selwyn Plutonic Suite; Proterozoic; Cambrian; Ordovician; Silurian; Devonian; Carboniferous
Illustrationssketch maps; cross-sections; stratigraphic columns; photographs
Released2000 11 01; 2013 08 13; 2016 01 12
AbstractThe northeastern Niddery Lake map area is underlain by autochthonous North American strata. These include uppermost Proterozoic shallow- and deep-water strata, the edge of the Lower Cambrian Blackwater Platform and adjacent Selwyn Basin, Middle Cambrian to Silurian basin strata deposited on the Niddery submarine high, and Middle Devonian to Carboniferous strata deposited in the middle of a major foredeep clastic basin that stabilized at the end of the Paleozoic with a complex of shallow- and deep-water strata. Lower Paleozoic rocks include significant volumes of alkaline volcanic and volcanoclastic strata. In this bulletin, twenty-seven mappable units in four different facies zones are identified and ten new formations within them described: Algae Lake, Old Cabin, Elmer Creek, Hailstone, Misfortune, Thor Hills, Hawthorne Creek, Heritage Trail, Keele Creek, and Fourway. The "tectonostratigraphic map unit" is defined for the first time. The northeastern part of the Niddery Lake map area comprises three major structural complexes: Mackenzie Fold Belt, Rogue Décollement Complex, and Keele Thrust Belt. The Mackenzie Fold Belt contains open to tight folds and thrusts and is shortened by approximately 20 per cent. The Rogue Décollement Complex is shortened by more than 80 per cent and is made up of small folds with amplitudes three to five times their wavelength. In the complex, fold axes bend northwest in association with the northwest-trending Macmillan