Geology
During the Pleistocene period a snowfield covered the top of the Mount Field plateau which fed glaciers in the surrounding valleys. A large, 12 km long glacier formed the broad river valley and the cirque walls above Lake Seal. Twisted Tarn, Twilight Tarn and the tarns on the tarn shelf were formed by glacial scouring. A glacier flowed south from the Rodway Range, forming lakes Belcher and Nelton, and north to form the Hayes Valley and Lake Hayes.
In alpine areas podzolic, humus and leached soil is most common. The podzols often occur on deep periglacial solifluction deposits down to 450 m. Alluvial floodplains have developed in the lower park on deposits of quaternary alluvium.
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