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Professional Paper 1386–A

Chapter A–2 (Figure 14)

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Figure 14.—Evolution of glacierization of a mountainous area from accumulation of snow and ice during a period of climate cooling. A, The lowering of equilibrium line altitude (ELA) and concomitant increase in the accumulation area results in the formation of mountain glaciers; B, The increase in amount of precipitation from orographic uplift of moist maritime air masses leads to the formation of a highland ice cap; C, An additional expansion of the glacier cover produces an ice sheet. Modified from Flint (1957, p. 317, fig. 18-4; 1971, figure on p. 598).

Figure 14. Evolution of glacierization of a mountainous area from accumulation of snow and ice during a period of climate cooling. A, The lowering of equilibrium line altitude (ELA) and concomitant increase in the accumulation area results in the formation of mountain glaciers; B, The increase in amount of precipitation from orographic uplift of moist maritime air masses leads to the formation of a highland ice cap; C, An additional expansion of the glacier cover produces an ice sheet. Modified from Flint (1957, p. 317, fig. 18-4; 1971, figure on p. 598).



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