It is called a crevasse.
A moving mountain glacier can carve a U-shaped valley. As the glacier moves downhill, it erodes the sides and bottom of the valley, creating a distinctive U-shaped cross-section. The glacier's immense weight and motion combined with erosion from the ice can shape the landform over time.
A stream shaped valley is usually 'V' shaped. A glacier formed valley is usually 'U' shaped.
The shape of a valley carved by a glacier is U shaped. A valley carved by a river is V shaped.
A Fissure is a V shaped break in a galcier
a funnel shaped vent at the top of a volcano is a crater
A moving mountain glacier can carve a U-shaped valley. As the glacier moves downhill, it erodes the sides and bottom of the valley, creating a distinctive U-shaped cross-section. The glacier's immense weight and motion combined with erosion from the ice can shape the landform over time.
The glacier was huge.A v-shaped valley is a valley that was shaped by a glacier.
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The opening is called an estuary.
A Cirque
The Cirque is the name given to the bowl shaped depression were the valley glaciers usually begins. A glacier basically refers to a terminus that usually ends in a body of water.
A stream shaped valley is usually 'V' shaped. A glacier formed valley is usually 'U' shaped.
In cross-section: A 'U' shaped valley is formed from glacial erosion. A 'V' shaped valley is formed by river erosion.
A bowl-shaped depression at the head of a glacial valley is called a cirque or a corrie. It is typically formed by the erosion of a glacier.
A U-shaped valley is a geological formation formed by the erosive action of a glacier. Ice moving downhill carves out a broad, U-shaped valley with steep sides and a flat bottom. These valleys are characteristic of areas that have been shaped by glacier activity.
When the glacier is moving down the side of the valley it scrapes of the rocks. The grinding changes the shape of the valley so that it is rounded.
The opening may have a crater, more technically called a "caldera."