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19 September 2014
Friday fold: Miette Group anticline in Banff National Park, Alberta
Here’s an outcrop of Miette Group slate, seen at the intersection of the Icefields Parkway with the Trans-Canada Highway, just north of Lake Louise, Alberta: There’s a lovely anticline just to the right of Zack, who obligingly provided a sense of scale. Also note how cleavage which is subparallel to bedding on the far left side of the outcrop, becomes perpendicular to bedding along the crest of the anticline… Happy …
1 September 2014
Field work on the Grinnell Formation at Red Rock Canyon, Waterton Lakes National Park, Alberta
Callan’s Rockies field course students document faulting and jointing in Red Rock Canyon, Waterton Lakes National Park, Alberta.
29 August 2014
Friday fold: Pleistocene glacial folding of Cretaceous sedimentary rock?
The Friday fold is found in Cretaceous rocks of eastern Alberta – but far beyond the tectonic influence of the Canadian Rockies. So what’s responsible for the folding?
27 August 2014
Dinosaur bone
In July, I found a dinosaur bone in Dinosaur Provincial Park! It was lying in a wash coming off a small mesa, and sure enough, when the students and I walked up the little draw, we came to in situ bones poking out of the cliff above. After showing it to the students, I put it back down exactly where I had found it, of course.
23 August 2014
An examination of the Horseshoe Canyon Formation in eastern Alberta
An expert on the deltaic depositional setting of eastern Alberta’s Horseshoe Canyon Formation shares field evidence and expertise with Callan’s students.
6 August 2014
Guest post: Glaciolacustrine deltas in the Canadian Rockies
One of Callan’s “Canadian Rockies” field course students supplies a guest post about deltas that build out into glacial lakes.
12 July 2014
Stromatolite from near Crypt Lake
Greetings from the field… here’s a scene I contemplated yesterday…
4 July 2014
Friday fold: Warspite Anticline
A final guest Friday fold from reader Howard Allen, who I’m pleased to be meeting up with in Banff late next week… Howard writes the following in describing this lovely scene: Warspite Anticline, Peter Lougheed Provincial Park, Alberta. Photo is a telephoto shot (hence the strong blue alpine haze–the colour cast is an accurate rendition of the original daylight Kodachrome slide), looking southwest at an angle to regional strike. The …
16 May 2014
Friday fold: Lyautey Syncline
Another guest Friday fold from Howard Allen: View looking north at Mount Lyautey, on axis of the Lyautey Syncline, from Aster Lake trail, Peter Lougheed Provincial Park, Alberta. Rocks are carbonates of the upper Mount Head Formation, Carboniferous (Mississippian). Photo taken in 1981.
6 April 2014
Structural geology of Mount Evan-Thomas
Longtime reader and frequent contributor Howard Allen has three images to share with us today. Let’s see what he’s got… Oh my. What is that? West ridge of Mount Evan-Thomas, Opal Range, Peter Lougheed Provincial Park, Alberta. View looking south across Grizzly Creek at structural features (yellow boxes outline detail images to highlight key features, shown in subsequent images). Rocks are Carboniferous (Mississippian) carbonates. Location is 50.7660, -115.1259. Photo taken …