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TitleRevised tectonostratigraphy of Yukon Tanana and Slide Mountain terrane units in the Thirtymile Range and Wolf Lake areas, southern Yukon: GEM-2 Cordillera Project, report of activities 2018
AuthorCleven, N R; Ryan, J J; Zagorevski, A; Hayward, N
SourceGeological Survey of Canada, Open File 8476, 2018, 13 pages, (Open Access)
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
File formatpdf
NTS105B/05; 105B/06; 105B/07; 105B/08; 105B/09; 105B/10; 105B/11; 105B/12; 105B/13; 105B/14; 105B/15; 105C/07; 105C/08; 105C/09; 105C/10; 105C/15; 105C/16; 105F/01; 105F/02; 105G/04
AreaThirtymile Range; Wolf Lake
Lat/Long WENS-133.0000 -131.1667 61.2500 60.4167
Subjectsregional geology; tectonics; stratigraphy; structural geology; tectonostratigraphic zones; modelling; bedrock geology; lithology; ophiolites; sedimentary rocks; conglomerates; clastics; provenance; structural features; folds; shear zones; faults; structural trends; petrogenesis; tectonic history; metamorphism; deformation; foliation; textural analyses; sutures; Canadian Cordillera; Yukon-Tanana Terrane; Slide Mountain Terrane; Jones Lake Formation; Finlayson Assemblage; Klinkit Assemblage; Snowcap Assemblage; Cassiar Terrane; geological mapping; siliciclastic rocks; Phanerozoic; Mesozoic; Triassic
Illustrationslocation maps; geoscientific sketch maps; photographs; equal-area stereonet projections
Natural Resources Canada Library - Ottawa (Earth Sciences)
ProgramWestern Cordillera, Devonian and Permian structural architecture, GEM2: Geo-mapping for Energy and Minerals
Released2018 10 31
Summary(Plain Language Summary, not published)
This open file report presents a summary of 2018 fieldwork in the northern Cordillera. Research goals are focused on revising the tectonostratigraphy of a potential tectonic collision zone between two major geological terranes, the Yukon Tanana and Cassiar terranes. Fieldwork was conducted in the Thirtymile Range and Wolf Lake areas of southern Yukon. Outcrop observations, measurements, and representative rock samples were collected for petrologic and structural analysis. Targeted samples were collected for geochemical analysis and geochronological dating to provide an understanding of the tectonic setting of sedimentary units and potentially ophiolitic rocks. The tectonic models that will be developed from synthesis of all new data and historical knowledge, will modernize the tectonic understanding of the northern Cordillera, and will provide broader context for use in mineral exploration for syngenetic and epigenetic mineral deposits.