Sir,
I am strongly in favour of keeping the word in use. Professor Flint’s use of “glaciation” confused me in reading his Glacial Geology and the Pleistocene Epoch. Wright and Priestley found a need for “glacierisation” in describing a region which is practically inundated by glaciers and ice sheets, and it is under those circumstances rather more than any other that the term allows a writer to avoid awkward expressions. Certainly it is cacophonous; yet there is a real need for a term and “glacierization” is self explanatory. Try and replace the word by another in the following expressions: “a more complete glacierization”; “increasing glacierization”; “intensity of glacierization.” The use of “ice-cover,” though not impossible, leaves various openings for confusion.