glacier![click to hear](/images/speaker.jpg)
Mass of ice resulting from the accumulation and compression of snow; it moves under its own weight.
terminal moraine ![click to hear](/images/speaker.jpg)
Frontal moraine marking the glacier’s most advanced position before it recedes.
rock basin ![click to hear](/images/speaker.jpg)
Basin dug out of soft rock by a glacier.
glacier tongue ![click to hear](/images/speaker.jpg)
River of ice formed by the flow of the firn.
riegel ![click to hear](/images/speaker.jpg)
A rocky ridge set crosswise to the glacier tongue.
crevasse ![click to hear](/images/speaker.jpg)
Deep narrow fissure that forms on the surface of the glacier.
ground moraine ![click to hear](/images/speaker.jpg)
Deposit of rock debris (till) that is dragged along and deposited under the advancing glacier.
end moraine ![click to hear](/images/speaker.jpg)
Deposit of rock debris scraped from the ground and pushed to the front of the glacier.
outwash plain ![click to hear](/images/speaker.jpg)
Relatively even, gently sloping tract of land, formed by the action of a glacier’s meltwater.
meltwater ![click to hear](/images/speaker.jpg)
Water that runs beneath the glacier tongue, forming rivers and occasionally lakes at the foot of a glacier.
lateral moraine ![click to hear](/images/speaker.jpg)
Deposit of rock debris scraped from the sides of raised land by ice.
serac ![click to hear](/images/speaker.jpg)
Chaotic mass of unstable ice bordered by crevasses.
hanging glacier ![click to hear](/images/speaker.jpg)
Glacier with no tongue that remains in its cirque.
glacial cirque ![click to hear](/images/speaker.jpg)
Semicircular cavity with steep sides, carved out by ice.
firn ![click to hear](/images/speaker.jpg)
Accumulation of snow inside a cirque; compressed by its own weight, it is converted into ice and feeds the glacier.
bergschrund ![click to hear](/images/speaker.jpg)
Crevasse between the firn and the rock face; it appears when the glacier breaks away from the rock face.