About 100 million years
Different glaciers are behaving differently. Today, some are gaining mass (ice), while most are losing it. At what point this became the case globally, it is difficult to say. I would guess 50-100 years ago the majority of worldwide glaciers were in net mass loss. Remember though that it is not just broad climatological forces that control glacial melt.
glaciers are big and vary cold.
Large sheets of ice that do not melt are called glaciers. Glaciers are formed when snow accumulates over time and compacts into ice, flowing slowly due to gravity.
What can happen when the glacier melts in a cirque
They can't exactly die as they aren't alive, but they can melt.
Global warming
Water can speed up the rate at which glaciers melt. Whether the water is acidic or not has no effect.
Different glaciers are behaving differently. Today, some are gaining mass (ice), while most are losing it. At what point this became the case globally, it is difficult to say. I would guess 50-100 years ago the majority of worldwide glaciers were in net mass loss. Remember though that it is not just broad climatological forces that control glacial melt.
Melt. Move
they will melt
Global
Sea or
glaciers are big and vary cold.
I think that glaciers don't melt in the summer because glaciers form where it's cold like year long so it would be cold in the summer too. In cold weather ice doesn't melt.
Large sheets of ice that do not melt are called glaciers. Glaciers are formed when snow accumulates over time and compacts into ice, flowing slowly due to gravity.
Global warming.
They melt!