New glaciers can definitely form. A new glacier formed after the eruption of Mount St. Helens in 1980! https://en.wikipedia.org/wiki/Crater_Glacier https://en.

New glaciers can definitely form. A new glacier formed after the eruption of Mount St. Helens in 1980! https://en.wikipedia.org/wiki/Crater_Glacier https://en.wikipedia.org/wiki/Crater_Glacier