Coincidentally, I was just watching Myron Cook's video on the Great Unconformity (https://en.wikipedia.org/wiki/Great_Unconformity https://en.wikipedia.org/wiki

Coincidentally, I was just watching Myron Cook's video on the Great Unconformity (https://en.wikipedia.org/wiki/Great_Unconformity https://en.wikipedia.org/wiki/Great_Unconformity, although that page only briefly discusses the "Snowball Earth" connection). https://www.youtube.com/watch?v=LXzDfQyUlLg https://www.youtube.com/watch?v=LXzDfQyUlLg Beautiful scenery and an excellent discussion of geological strata.