A glacier is compacted snow, not ice

I can warrantee you compacted snow is ice. Just go to Greenland, Argentina or Switzerland and see a glacier by yourself. You see ice and bubbles(bubbles could grow and become caves and over time they go up).

Icebergs are called ICE- berg for a reason, not snow-bergs.

If you had a snow that is 1/10 the density of water, just 10 meters of snow means 1 atmosphere of pressure. That pressure compresses the snow, making 10 meters hold more water and more pressure.

There are places in the world with glaciers higher than three kilometers(1.8 miles).

> Snow comprises individual ice crystals

https://en.wikipedia.org/wiki/Snow

Snow is ice.