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TitleWolf Lake project: revision mapping of Dorsey Terrane assemblages in the upper Swift River area, Southern Yukon and northern B.C.
 
AuthorRoots, C F; de Keijzer, M; Nelson, J L
SourceYukon Geology Program, Yukon Exploration and Geology 1999, 2000 p. 115-125 Open Access logo Open Access
LinksOnline - En ligne
Image
Year2000
Alt SeriesGeological Survey of Canada, Contribution Series 1999212
PublisherYukon Geological Survey
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf
ProvinceBritish Columbia
NTS104O/09; 104O/10; 104O/11; 104O/12; 104O/13; 104O/14; 104O/15; 104O/16; 105B/01; 105B/02; 105B/03; 105B/04; 105B/05; 105B/06; 105B/07; 105B/08
AreaJennings River; Wolf Lake
Lat/Long WENS-132.0000 -130.0000 60.5000 59.5000
Subjectseconomic geology; general geology; geochemistry; igneous and metamorphic petrology; mineralogy; structural geology; mafic metavolcanic rocks; metavolcanic rocks; mafic volcanic rocks; limestones; strata-bound deposits; pyrrhotite; sphalerite; mineralization; metamorphism; faults, thrust
Illustrationslocation maps; aerial photographs; cross-sections, structural; geological sketch maps; cross-sections, stratigraphic
ProgramAncient Pacific Margin NATMAP Project
AbstractThe northern half of the Jennings River (104O) and southern half of the Wolf Lake (105B) map areas include polydeformed and metamorphosed rocks of the eastern Big Salmon Complex (Yukon-Tanana Terrane) and a succession of mostly Paleozoic rock assemblages currently grouped in Dorsey Terrane. On the northeast side of Dorsey Terrane, siliceous grits and mafic metavolcanic rocks of the Dorsey assemblage are thrust over the Ram Creek assemblage. Dorsey assemblage is in turn structurally overlaind by thin mafic volcanic rocks and limestone (Klinkit (?) assemblage), and by dark phyllitic rocks and quartzites of the Swift River assemblage. Extensive stratabound pyrrhotite-sphalerite mineralization occurs along a 6.5 km structural trend in calc-silicate rocks and rhyolite of the Ram Creek assemblage. Similar mineralization also occurs several kilometres southwest of that trend, within or adjacent to the Dorsey assemblage. Both assemblages contain quartz +/- feldspar-phyric layers with potential for volcanogenic massive sulphide showings.
GEOSCAN ID211073

 
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