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