glaciation

picture of glaciers

Famous glaciers, location : 1. Baltoro Glacier in the Karakoram mountains 2. Perito Moreno Glacier in the Patagonia Argentina

Glacier features 1. U-shaped valley 2. horns 3. aretes 4. Cirque glacier 5. Valley glacier 6. Ice-dammed Lake

Glacial deposition





glaciers are important for human, because they give us fresh water and they keep earth's temperature.

Ice age

The general term "**ice age**" or, more precisely, "**glacial age**" denotes a geological period of long-term reduction in the temperature of the earth's surface and atmosphere, resulting in an expansion of continental ice sheets, polar ice sheets and alpine glaciers. An ice age is a natural system. Within a long-term ice age, individual pulses of extra cold climate are termed "glacial periods" (or alternatively "glacials" or "glaciations"), and intermittent warm periods are called "interglacials". Geologically, //ice age// implies the presence of extensive ice sheets in the northern and southern hemispheres; by this definition we are still in the ice age that began at the start of the pleistocene.