8 November 2019
Friday fold: Rist Canyon cobble
Posted by Callan Bentley
Reader Carl Brink from Colorado shares this image with us:
There’s a Friday fold hidden in there! Can you spot it?
(It’s the cobble in the exact center…)
Here it is:
This is the bed of Rist Creek Canyon in northern Colorado.
The area I found the cobble in is mapped as Early Proterozoic quartzofeldspathic gneiss, often containing almandine garnet.
That is indeed what this appears to be; It’s a lovely sample of the local bedrock.
Nice find, Carl! Thanks for sharing.
Happy Friday, all!