The transition between water and ice is mind-boggling. I see many varieties of ice formed over that small range of a temperature. This was one, new ice on a beaver pond, most likely related to what was below the surface of the water, probably stumps or hummocks, that changed the rate at which the water froze. The result was a beautiful “painting” of light.
Still Learning To See 
splendid capture! from “a world where water slows slowly into ice.”
Thank you Deb. And that (“a world where water slows slowly into ice”) is a splendid way to say it.