Meaning of "emanating" in the enclosed paragraph
Solution 1:
emanate = to come from or out of
Cambridge dictionary
The source of the light in this case is the illuminated snow near the top of the mountain.
A contrast is not capable of emanating. Nor is the violet sky (at least, not in comparison to the brilliance of the snow). So what did the light do? The sentence may be understood as:
The light
- peaked the tallest mountain,
- made a contrast between gleaming white snow and the violet sky, and
- emanated (from the brightly lit snow) as a powerful glow that felt empowering and strong.