I think you mean a TARN - the lake left in the corrie or cwm beneath what had been the head of the glacier. !t's that "huge block ofice" phrase that puzzles me a bit.
A crevasse is a deep open crack in a glacier. It is formed when a magma chamber under a glacier causes melting and cracking and causes the glacier to slide into the ocean on the magma
A crevasse is a large fissure, or crack, in something although it is usually applied to a glacier.
A glacier trough is also known as a U-shaped valley and is formed when a glacier passes through it. The glacier erodes the bottom of the valley through abrasion, and the sides of the valley through freeze-thaw weathering. It wears away the softer rock but when it gets to the harder, tougher rock it can't erode it to give the glacial trough its shape. Hope this helps!
Crevasses
Crevasse! :)
Crater lakes are usually round with (with a cliff round the edge) and sometimes deep. They all sit in the craters formed by the mouths of volcanoes.
The world's largest glacier and also the largest in East Antarctica is the Lambert Glacier. The glacier is 60 miles wide, 250 miles long, and 2,500 m deep.
Glacier National Park?
A crevasse is a large crack in a glacier.
According to its Wikipedia entry: "Lambert Glacier is a major glacier in East Antarctica. At about 60 miles wide, over 250 miles long, and about 2,500 m deep, it holds the Guinness world record for the world's largest glacier."
Land features, expecially the size of the great lakes, are generally formed by natural processes. In the case of the great lakes, they were formed by huge glaciers moving southward. Each lake represents where a glacier stopped moving. When the glacier melted away, there was a deep and wide hole left where its immense weight had carved into the Earth, and the melt water filled the hole.
The Lambert Glacier in Antarctica is 60 miles (100 km) wide, over 250 miles (400 km) long, and about 2,500 m deep. It is the world's largest glacier.