How are glaciers formed and where?

Glaciers arise where there is more snow than it has time to melt. Gradually, snow accumulates, compacts and turns into ice. Glaciers cover about 1/10 of the land. They are located primarily on the mainland of Antarctica and the island of Greenland, which are covered with huge ice shells. Chippings of ice broken off along their shores form floating mountains – icebergs. Some of them are huge. Glaciers in the mountains occupy considerable areas, especially in the Himalayas, Pamir, and Tien Shan.