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W.O. Kupsch fonds
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Development of a nappe

Series of diagrams showing the development of a nappe, (after Heim). Diagram copied from a book.

Athabasca tar sand

"Athabasca tar sand" (McMurray formatio of Lower Cretaceous age). Hangingstone Valley near Waterways, Alberta. Colin McKenzie looking at outcrop.

Outcrop of McMurray formation

Horse Creek Valley near McMurray, Alberta. Outcrop of McMurray formation (Lower Cretaceous), commonly called "tar sand" overlain by Clearwater formation (Lower Cretaceous)

Peter Pond Lake

Photograph taken on a windy day on Peter Pond Lake (Big Buffalo Lake), Saskatchewan

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