Drp~irtrnt~nf cl.J'~s'roiogic~a1 Sc.ie~~c.r.r, Unir~rrsir~l oj'Britisll C'oIrrr?llzia, V~~nc.oirt:c~r, B.C'.. <'crnclciu 1/67' 1 W 5 'I'wo major groups of sedimentary rocks hosting zinc-lead deposits in the northern Canadian Cordi1Ier:a can be distiiactly partitioned on the basis of depositional tectonics. A Proterozoic to Early Clanmbrian succession of curboraatrs and clastics is separated from a 1,ate Cambrian to Devonian basinal shale and laterally equivalent platfor-ma1 carbonate sequence by a regional erosional hiatus. 'This partitioning is emphasized by bimodal minor element distributions in carbonate-hosted sphalerite found throughout these rocks. Two populations of sphalerite, individually contained within the two major groups of host rocks, are separated by a unit that is relatively barren of mineralization. A regional gcologic map, diagrammatic cross section, and time-space projection illustrate the stratigraphy, depositional tectonics, and location of sphalerite occurrences, and are presented as a framework for filrther research.On peut distinguer deux g r o u p s majeurs de roches sedimentnires qui reraferment des depbts de zinc-plornb Jans le nord de In CortiilBere canadienne en se hasant sur la tectonique des dep6ts. 1Jne succession dntant eiu Prot61.ozoique au Carnbrien infkrieur cornprenant des carbonates et des clastiq~aes est \epar@e d'une siquer~ce de shale de bassira et de son equivalent lateral de carbonate de plate-forme datant de la fin du Camblien au Devonien pal-un hiatus d'krosion regionale. Clette ¶tion est mise en evidence par des distributions bimodales d'elements rnineurs dans la sphalisite logie dans les carbonates clu'on retrouve d m s ces ruches. Les deux populations de sphalkrite confinkcs dans I'un ou I'autre yroupe rnajeur de roches hotes sont skparees par une unite qui est relativernent dknuee de toute mineralisation. On prksente une car-te y6ollogique reyion:i%e, un bloc-diagrnmnse et une projection espace-temps qui illustrent la stratigraphic, la tectonique de depot et la localisation des venues de sphalkrite et peuvent servir de cadre aux futures recherchcs. j'r'raduit par lejournal]Can. J . Eaa-th Sci., 16, 380-385 (1979)
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.