The unsorted till appears moulded by ice to form a blunt ... They mark the furthest point reached by the ice sheet or glacier. Terminal moraines form when the ice melts and deposits all the ...

This depression is attributed to Middle Cainozoic earth-movements, and its form has become moulded by the Moselle and its tributaries, which have removed an immense amount of the yielding Permian ...

Warm ocean water flowing under the glacier tongue is melting the ice from below. High air temperatures cause lakes to form on the surface, whose water flows through huge channels in the ice into ...