Geological Survey of Canada, Current Research (Online) no. 2000-D3

Download or read book Geological Survey of Canada, Current Research (Online) no. 2000-D3 written by O. Salad Hersi and published by Natural Resources Canada. This book was released on 2000 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cores drilled from a quarry north of Montreal show a distinct lithostratigraphic unit occurring below the Upper Cambrian Cairnside Formation. The unit was previously considered as the Covey Hill Formation of the Lower Potsdam Group. This paper describes the regional geological setting, lithology, and depositional environment of this unit. Evidence for considering the unit as part of the Rivière Aux Outardes Member (Clark, 1966) is presented. Correlations with other stratigraphic units in southern Quebec are discussed along with evidence for a possible Cambrian carbonate platform in the region. Two scenarios of possible regional depositional episodes are also hypothesized.