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CyGS Lecture by Dr. Dale Leckie

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Austrian Canadian Cultural Center

3112 11 Street Northeast

Calgary, AB T2E 7J1

Canada

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Mountain building to rivers - Understanding the Paskapoo/Porcupine Hills Formation as background for geotechnical investigations in the Calgary urban area

Dale Leckie, Ph.D., P. Geol.

Dale Leckie will present an overview of the geological evolution of Western Canadian Sedimentary Basin, with emphasis on the Paskapoo/Porcupine Hils Formation in the Calgary urban area. The Paleocene Paskapoo Formation was deposited during the last phase of foreland basin sedimentation associated with ancestral Rocky Mountains in Western Canada. Lithological heterogeneity associated with meandering river depositional environments best describes the Paskapoo sediments. Following deposition of the Paskapoo Formation, Calgary has been subjected to ~60 million years of uplift, erosion and overburden removal. The final significant geological event to affect Calgary was glaciation and subsequent deglaciation in the last 29,000 years. Analogous modern day fluvial systems, particularly meandering rivers, as they relate to the depositional environment of the Paskapoo Formation will be described. There will be a virtual field trip to the meandering river in Fish Creek Park.

Bio

Dale Leckie, P.Geol., has a Ph.D. in Geology, and a M.Sc. and B.Sc. in Geography. He was a scientist at the Geological Survey of Canada and chief geologist at a large Canadian oil company. Dale is currently adjunct professor in Geoscience at University of Calgary. Dale has been president of the Society for Sedimentary Geology (SEPM) and Canadian Society of Petroleum Geologists (CSPG). Dale is recognized for his long-term contributions to geology and is an honorary member of SEPM and CSPG. Dale has published widely on the geology of Western Canada and edited numerous books. He is author of the book “Rocks, Ridges, and Rivers: Geological Wonders of Banff, Yoho, and Jasper National Parks”.

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Austrian Canadian Cultural Center

3112 11 Street Northeast

Calgary, AB T2E 7J1

Canada

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