 
 <prompt> ```where are the cracks formed Given the previous question, write a context that contains the answer. It can be 1 - 20 sentences. Context:```
Abeg translate di text wey dey up to Nigerian pidgin. If e get programming code for inside, leave am as e be. No add any extra statement for your response: <response>: ```Di top 50 m (160 ft) of a glacier dey rigid because dem dey under low pressure. Dis upper section dey known as di fracture zone and e dey move mostly as one unit over di plastically flowing lower section. Wen glacier dey move through irregular terrain, cracks wey dem dey call crevasses dey develop for di fracture zone. Crevasses dey form sake of differences in glacier velocity. If two rigid sections of a glacier dey move at different speeds and directions, shear forces dey cause dem to break apart, opening a crevasse. Crevasses dey seldom pass 46 m (150 ft) deep but for some cases e fit reach 300 m (1,000 ft) or even deeper. Beneath dis point, di plasticity of di ice dey too much for cracks to form. Intersecting crevasses fit create isolated peaks for di ice, wey dem dey call seracs.``` 