Abstract
The Windermere Supergroup is a regionally widespread succession of predominantly deep marine sedimentary rocks deposited on the continental margin of western Canada following its separation from Australia ca. 700 Ma. A vertical succession from sand-rich basin plain turbidites ta mud-rich slope facies occurs over a ca. 7 km thick stratigraphie interval and records the progradation of the continental margin attendant with diminished rates of thermally-driven subsidence. Although unfossiliferous and deformed in the Mesozoic, careful stratigraphie mapping, utilizing a lithologically distinct condensed interval (SHEET 2) and two carbonate-rich lowstand intervals have established regional continuity of this depositional system over ca. 4° of latitude. The continuity of the depositional system has also been established using geochronology of detrital zircons which reveals a uniform provenance throughout the southeastern Canadian Cordillera (SHEET 2). Taken in concert with facies patterns and paleocurrent data, the Windermere grits are interpreted as a longitudinal turbidite system that flowed west
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