GEOSCAN Search Results: Fastlink

GEOSCAN Menu


TitlePhanerozoic bedrock geology, Strathcona Fiord area, Ellesmere Island, Nunavut
DownloadDownloads
AuthorHarrison, J C; Thorsteinsson, R; de Freitas, T A
SourceGeological Survey of Canada, "A" Series Map 2141A, 2009, 2 sheets; 1 CD-ROM, https://doi.org/10.4095/226428
Year2009
PublisherNatural Resources Canada
Documentserial
Lang.English
Maps1 map
Map Info.geological, bedrock, structural geology, 1:125,000
Mediapaper; on-line; digital; CD-ROM
File formatreadme / lisez-moi
File formatpdf; JPEG2000; e00; shp
ProvinceNunavut
NTS49E
AreaEllesmere Island; Strathcona Fiord; Bay Fiord; Prince of Wales Icefield; Ekblaw Glacier; Jokel Fiord; Huff Ridge; Kahkotchea River; Cape Ingrid; Marie Island; Cape Pillsbury; Mount Bell; Taggart River; Svendsen Peninsula; Braskeruds Plain; Fosheim Peninsula; Yates Lake; Nodvedt Lake; Vendom Fiord; Taggart Lake; Augusta Bay; Irene Bay; Stygge Glacier; Wykeham Glacier
Lat/Long WENS-80.0000 -76.0000 81.0000 80.0000
Subjectsstructural geology; stratigraphy; bedrock geology; structural features; faults; faults, thrust; bedding; folds; anticlines; synclines; tectonic setting; sedimentary basins; stratigraphic correlations; lithology; sedimentary rocks; conglomerates; breccias; sandstones; limestones; mudstones; shales; dolostones; siltstones; reefal facies; grainstones; gypsum; anhydrite; arenites; slates; stromatolites; igneous rocks; intrusive rocks; granites; metamorphic rocks; gneisses; fossils; sedimentary structures; glaciers; sediments; gravels; sands; silts; muds; Eureka Sound Group; Margaret Formation; Mount Moore Formation; Mount Bell Formation; Mount Lawson Formation; Kanguk Formation; Hassel Formation; Christopher Formation; Isachsen Formation; Barrow Formation; Pat Bay Formation; Roche Point Formation; Bjorne Formation; Trold Fiord Formation; Fram Formation; Hecla Bay Formation; Strathcona Fiord Formation; Blue Fiord Formation; Vendom Fiord Formation; Goose Fiord Formation; Douro Formation; Cape Storm Formation; Allen Bay Formation; Irene Bay Formation; Thumb Mountain Formation; Bay Fiord Formation; Eleanor River Formation; Baumann Fiord Formation; Christian Elv Formation; Cape Clay Formation; Cass Fjord Formation; Cape Leiper Formation; Cape Ingersoll Formation; Police Post Formation; Cape Kent Formation; Cape Wood Formation; Dallas Bugt Formation; Eids Formation; Devon Island Formation; Cape Phillips Formation; Phanerozoic; Cenozoic; Quaternary; Tertiary; Paleozoic; Devonian; Silurian; Ordovician; Cambrian; Precambrian; Proterozoic
Illustrationssketch maps; cross-sections
ProgramSecure Canadian Energy Supply
LinksMetadata - Métadonnées
Image
Released2009 02 11; 2009 03 25
AbstractThe Phanerozoic bedrock geology of Strathcona Fiord map area (NTS 49E) features unmetamorphosed sedimentary rocks of Lower Cambrian to Upper Devonian and Triassic to Eocene ages exposed within 1) the central Ellesmere Fold Belt, 2) overlying Sverdrup Basin, 3) a regional synclinorium (Schei Syncline) which can be traced from central Ellesmere Island to Grinnell Peninsula on western Devon Island, and in the east 4) a narrow, intensely faulted portion of the Arctic Platform. The Paleozoic succession thickens westward from a feather edge, where the Lower Cambrian lies nonconformably on Paleoproterozic granulites of the Inglefield Mobile belt (1.98 to 1.75 Ga), to a thickness exceeding 9 km under the centre of the map. Prominent depositional features include shelf to basin facies changes involving ten formations of Upper Ordovician to Lower Devonian ages, biostromal carbonates of Silurian age containing migrated hydrocarbons, important unconformities in Pragian and Emsian strata that provide a late Caledonian uplift history for south eastern Ellesmere Island, and Middle to Upper Devonian foreland clastic formations that are the depositional record of the Ellesmerian Orogeny. The Schei Syncline and Central Ellesmere Fold Belt are Devonian-Early Carboniferous tectonic features produced during the Ellesmerian deformation. Subsequent planation has formed a regional angular unconformity with Lower Triassic to Middle Eocene strata deposited above this surface and preserved now in numerous widely scattered fault-bounded outliers. The Triassic to Cretaceous succession, up to 1500 m thick in the northwest, represents the eastern margin of the Sverdrup Basin. In addition, rift-related redbeds of the Canyon Fiord Formation and overlying Permian sandstones are likely present in the northwestern subsurface. The Eureka Sound Group (Maastrichtian to middle Eocene) is preserved mostly east of the Sverdrup Basin and attains a thickness of about 4000 m in the north central Strathcona Fiord area. These sediments are the depositional response to phases of compressive and strike-slip deformation during the Eurekan Orogeny, also related to more distant events including sea floor spreading in Baffin Bay and the plate motions of Greenland. Commercially significant coal resources are exposed in Eocene strata between Strathcona and Bay fiords.
GEOSCAN ID226428