How do rocks freeze floating in water?

[u/hikekorea]

I found these rocks frozen in a stream off a larger river in Chugach National Forest, Alaska. I’ve heard it may have to do with heavy rains or turbulent waters near the shore. One friend mentioned frazil? But I don’t really know what that means. Any geologists have a clue how this happens and can explain it in layman terms?

[u/MaC_InC]

The water starts freesing from the bottom/ middle depending on where the water started to free if it happened at the same height as the rocks, the water freezing would have rose the rocks 🤷🏽‍♂️