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TitleGeology, Kangiryuaqtihuk / Minto Inlet, Victoria Island, Northwest Territories
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AuthorRainbird, R H; Bédard, J H; Dewing, K; Hadlari, T
SourceGeological Survey of Canada, Canadian Geoscience Map 82, 2014, 1 sheet, https://doi.org/10.4095/293460
Year2014
PublisherNatural Resources Canada
Editionprelim.
Documentserial
Lang.English
Maps1 map
Map Info.geological, bedrock and structural geology, 1:50,000
ProjectionUniversal Transverse Mercator Projection, zone 11 (NAD83)
Mediaon-line; digital
File formatreadme
File formatpdf; shp; xml; rtf; xls; JPEG2000
ProvinceNorthwest Territories
NTS87H/12
AreaVictoria Island; Kangiryuaqtihuk; Minto Inlet
Lat/Long WENS-116.0000 -115.0000 71.7500 71.5000
Subjectsstratigraphy; structural geology; bedrock geology; sedimentary rocks; marine deposits; sandstones; dolostones; limestones; shales; igneous rocks; dykes; sills; faults; intrusive rocks; structural features; Victoria Island Formation; Franklin Intrusions; Shaler Supergroup; Wynniatt Formation; Minto Inlet Formation; Reynolds Point Group; Jago Bay Formation; Boot Inlet Formation; Paleozoic; Cambrian; Ordovician; Precambrian; Proterozoic
Viewing
Location
 
Natural Resources Canada Library - Ottawa (Earth Sciences)
 
ProgramPGE/Base Metals - Victoria Island (NWT and Nunavut), GEM: Geo-mapping for Energy and Minerals
Image
Released2014 01 31
AbstractNTS 87-H/12 is underlain by the Jago Bay, Minto Inlet and lower Wynniatt formations of the Shaler Super-group, but there are few well exposed sections in this map area. Together with diabase sills, these strata comprise the gently south-dipping northern limb of the Holman Island Syncline. The outcrop pattern on this map is strongly influenced by evenly spaced, east-northeast-trending horst and gräben, with variable along-strike separation (up to 200 m). Many outcrops exhibit reddish, oxidative alteration that is interpreted to reflect pre-Cambrian chemical weathering. In the northern half of the map area, gräben preserve Cambrian sedimentary rocks, including the lower clastic unit and overlying, orange-weathering, tan dolostone unit. A topographically prominent, irregular diabase intrusion trends north-northwest from the northern shore of Minto Inlet. This may represent a broad magmatic feeder because it cuts across strata and parts of the body appear to feed laterally into more typical, continuous sills.
Summary(Plain Language Summary, not published)
NTS 87H/12 is underlain by the Jago Bay, Minto Inlet and lower Wynniatt formations of the Shaler Supergroup. Together with diabase sills, these strata comprise the gently south-dipping northern limb of the Holman Island Syncline. The outcrop pattern on this map is strongly influenced by evenly spaced, ENE-trending block faults with offsets up to 200 m. Many outcrops exhibit reddish, oxidative alteration that is interpreted to reflect pre-Cambrian chemical weathering. In the northern half of the map area, down-dropped fault blocks preserve Cambrian sedimentary rocks, including a lower sandstone unit and overlying, orange-weathering dolostone unit. A topographically prominent, irregular diabase intrusion trends NNW from the northern shore of Minto Inlet. This may represent a broad magmatic intrusion because it cuts across sedimentary strata and parts of the body appear to feed laterally into diabase sills.
GEOSCAN ID293460