Describes the regional geology of the northern Yukon and north-western District of Mackenzie, based on original field work in the early 1960s and updated in light of more recent detailed investigations. After introductory chapters on the original reconnaissance survey, the physiographic setting of the study area, and the geological setting (tectonics, seismicity, tectonostratigraphic sequences), subsequent chapters describe the geology (including stratigraphy, paleontology, paleogeography, lithology, and tectonics, as applicable) of individual geological eras or periods from the Proterozoic to Tertiary. The following chapters cover the geology of the Beaufort Sea continental shelf; the White, Barn, and Campbell uplifts; the petrology of the northern Yukon intrusive suite; and the mineral and hydrocarbon potential of the study area. Includes a catalogue of stratigraphic sections and an index.

Previous studies of the lower Palaeozoic in the Eagle Plain & Richardson Mountain area of north-west mainland Canada in the Yukon & Northwest Territories have dealt either with outcrop or surface sections, or with subsurface well sections, but did not integrate these data. This has led to the development of inconsistent stratigraphic nomenclatures and an inability to form a consistent sequence stratigraphic model for the lower Palaeozoic in this area. This bulletin presents a stratigraphic synthesis based on data from surface exposures in the mountains surrounding Eagle Plain and on subsurface borehole data from beneath Eagle Plain and from the interior plain bordering the east flank of the Richardson Mountains. An internally consistent stratigraphic framework is developed, including reaffirmation of some previous nomenclature, restriction to certain areas of others, and definition of new stratigraphic units. The positions of carbonate-to-shale transitions which commonly exert a strong control on structural evolution and on the occurrence of sedimentary mineral deposits & hydrocarbons are more accurately delineated. A detailed sedimentological analysis of the Ogilvie Formation, the most prospective lower Palaeozoic unit for the occurrence of hydrocarbon reservoirs, is also included, along with a map of thermal maturity at the top of the unit.

Hardcover plus DVD