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TitleGeology, Mount Merrill, Yukon Territory - British Columbia
AuthorFallas, K M; Evenchick, C A
SourceGeological Survey of Canada, "A" Series Map 2091A, 2006, 1 sheet; 1 CD-ROM,
PublisherNatural Resources Canada
Maps1 map
Map Info.geological, bedrock and structural geology, 1:50,000
Mediapaper; on-line; CD-ROM; digital
File formatreadme / lisez-moi
File formatbmp; css; dbf (ESRI® ArcReader(TM) v.9.1, is included / est fourni); e00 (ESRI® ArcReader(TM) v.9.1, is included / est fourni); gif; htm; pdf (Adobe® Reader® v. 7 +); pmf (ESRI® ArcReader(TM) v.9.1, is included / est fourni); prj (ESRI® ArcReader(TM) v.9.1, is included / est fourni); shp (ESRI® ArcReader(TM) v.9.1, is included / est fourni); txt; xml; JPEG2000
ProvinceBritish Columbia; Yukon
AreaMount Merrill; Franklin Mountains
Lat/Long WENS-125.0000 -124.5000 60.2500 60.0000
Subjectsstructural geology; stratigraphy; bedrock geology; sedimentary rocks; sandstones; mudstones; dolostones; siltstones; shales; carbonates; conglomerates; structural features; folds; faults; lithology; Fort St. John Group; Scatter Formation; Tussock Member; Wildhorn Member; Bulwell Member; Garbutt Formation; Chinkeh Formation; Grayling Formation; Toad Formation; Ishbel Group; Fantasque Formation; Tika Formation; Mattson Formation; Besa River Formation; Mesozoic; Cretaceous; Triassic; Permian; Carboniferous
ProgramCentral Foreland NATMAP Project
LinksMetadata - Métadonnées
Released2006 10 01; 2007 02 01
AbstractThe Mount Merrill map area is situated at the southern end of the Franklin Mountains in a foothills physiographic setting. The geology of the area is characterized by sedimentary strata of Late Devonian to Early Cretaceous age, exposed in a series of asymmetrical box or kink folds whose geometry is controlled largely by the competence of the Carboniferous Mattson Formation. West-verging folds are locally cut by west-verging thrust faults of minor displacement. Interference of differing fold trends creates local culminations within the map area and introduces an en echelon offset of structures at the regional scale. The Beavercrow, Merrill and Babiche anticlines form one such en echelon set. Stratigraphic refinements include the local recognition of the informal Tika formation above the Mattson Formation and the assignment of Triassic strata to the Grayling and Toad formations. The Lower Cretaceous Chinkeh Formation found on adjacent map areas is inferred to be present at the base of the Garbutt Formation but was not directly observed within the Mount Merrill area.