Dr. Bondar talks about making this image:
Seventy-five million years ago rivers carved their way through this dry Grassland. Deposits of mud and sand from these ancient rivers are evident in the walls of the hills and hoodoos where there are many layers of weathering from water and wind erosion. The rocks that sit on top are called cap rocks and are harder stone (iron oxide in sandstone) than the sandstone at their base. The differential weathering of these rock layers cause the harder cap rocks to remain on top of the softer sandstone. Eventually, the cap rocks fall as the softer base breaks down.
EXTRA STUFF about the Hoodoo Gorge and its image-taking!
Don’t forget the dinosaurs!
Wind erosion reveals extinctions, continuing the erosion that water runoff and flash floods carve through soils.
Yo! Try this Hoodoo Gorge Word Puzzle.
You up for challenge?
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