| Title | Geology, Qikigtalik, Victoria Island, Northwest Territories |
| Download | Downloads |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Rainbird, R H ;
Bédard, J H; Dewing, K; Hadlari, T |
| Source | Geological Survey of Canada, Canadian Geoscience Map 177, 2015, 1 sheet, https://doi.org/10.4095/296801  Open Access |
| Image |  |
| Year | 2015 |
| Publisher | Natural Resources Canada |
| Edition | prelim. |
| Document | serial |
| Lang. | English |
| Maps | 1 map |
| Map Info. | geological, bedrock and structural geology, 1:50,000 |
| Projection | Universal Transverse Mercator Projection, UTM zone 11 (NAD83) |
| Media | on-line; digital |
| Related | NRCan photo(s) in this
publication |
| File format | readme
|
| File format | pdf; shp; xml; rtf; xls; JPEG2000 |
| Province | Northwest Territories |
| NTS | 87H/11 |
| Area | Victoria Island; Qikigtalik |
| Lat/Long WENS | -115.0000 -114.0000 71.7500 71.5000 |
| Subjects | stratigraphy; structural geology; bedrock geology; sedimentary rocks; marine deposits; sandstones; dolostones; limestones; shales; igneous rocks; dykes; sills; faults; intrusive rocks; structural
features; Franklin Intrusions; Victoria Island Formation; Mount Phayre Formation; Uvayualuk Formation; Shaler Supergroup; Minto Inlet Formation; Kilian Formation; Wynniatt Formation; Cenozoic; Ordovician; Cambrian; Proterozoic |
| Program | GEM: Geo-mapping for Energy and Minerals PGE/Base Metals - Victoria Island (NWT and Nunavut) |
| Released | 2015 08 07 |
| Abstract | Bedrock geology of NTS 87-H/11 is heavily masked by Quaternary glacial till (~75% of map's area). It is underlain mainly by carbonate rocks and dark shales of the middle-upper Wynniatt Formation of the
Shaler Supergroup, which is best-exposed in the SW corner of the map area. Together with several thick (up to 50m) diabase sills, these strata comprise the gently south-dipping northern limb of the Holman Island Syncline. The outcrop pattern of
bedrock units on this map is strongly influenced by evenly spaced, ENE-striking normal faults that form horst and gräben, with variable along-strike separation and are thus akin to piano keys. Proterozoic rock s are unconformably overlain by Early
Cambrian to Ordovician (?) strata of the recently defined, Quyuk , Uvayualuk and Mount Phayre formations, which are preserved in the gräben. Faults cut all of the bedrock units in the map area indicating that latest movement occurred in Ordovician or
later times. |
| Summary | (Plain Language Summary, not published)
NTS 87H/11 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 ID | 296801 |
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