00000nam 2200000zi 4500 9.955233 CaOODSP 20251031142449 m o d f cr mn||||||||| 250912t20132013oncab ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn-on M183-2/6980E-PDF Sharpe, David R., author. The significance of buried valleys to groundwater systems in the Oak Ridges Moraine region, Ontario : extent, architecture, sedimentary facies and origin of valley settings in the ORM region / D.R. Sharpe, H.A.J. Russell and A. Pugin. Significance of buried valleys to groundwater systems in the Oak Ridges Moraine region, Ontario : extent, architecture, sedimentary facies and origin of valley settings [Ottawa] : Natural Resources Canada = Ressources naturelles Canada, 2013. ©2013 1 online resource (84 pages) : illustrations (chiefly colour), maps (chiefly colour). text txt rdacontent computer c rdamedia online resource cr rdacarrier Geological Survey of Canada open file, 2816-7155 ; 6980 ISSN of series supplied from ISSN Portal. Includes bibliographical references (pages 77-84). "The fieldtrip traverses the glaciated landscape of southeastern Ontario from the Niagara Escarpment to the Ottawa Valley. The focus of the trip is on the glacial geology of a continental basin and tunnel valleys hosted within the glacial stratigraphy of the Oak Ridges Moraine region. Using digital elevation models, and detailed geological mapping, a system of anabraching valleys has been classified on the basis of length, width and depth. The valleys have been traced beneath the Oak Ridges Moraine using high-quality shallow reflection seismic and continuous borehole data. The trip presents a suite of subsurface data with outcrop sedimentology in support of meltwater process models and depositional environments. Process models are considered to relate to regional subglacial landscapes and are used to explain the origin of regional unconformities and the formation of tunnel valleys. Depositional process models, such as the jet-efflux model, will be discussed to interpret key sedimentary facies and evidence for hydraulic jumps where rapid flow meets standing bodies of water. …"--Abstract, page 7. Aquifers Ontario. Hydrogeology Ontario. Glaciology Ontario. Sedimentology Ontario. Aquifères Ontario. Hydrogéologie Ontario. Glaciologie Ontario. Sédimentologie Ontario. Geological Survey of Canada, issuing body. Open file (Geological Survey of Canada) 6980. (CaOODSP)9.506878 PDF 64.10 MB https://publications.gc.ca/collections/collection_2025/rncan-nrcan/m183-2/M183-2-6980-eng.pdf HTML N/A https://doi.org/10.4095/292673