Amazing Striped Icebergs 
Icebergs in the Antarctic area sometimes have stripes, formed by 
layers of snow that react to different conditions. 
 
Blue stripes are often created when a crevice in the ice sheet 
fills up with meltwater and freezes so quickly that no bubbles form. 
 
When an iceberg falls into the sea, a layer of salty seawater can 
freeze to the underside. If this is rich in algae, it can form a 
green stripe. 
 
Brown, black and yellow lines are caused by sediment, picked up 
when the ice sheet grinds downhill towards the sea.

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