Icebergs in Antartica Icebergs in Antartica sometimes have st | Geology of the world and the Environment
Icebergs in Antartica
Icebergs in Antartica 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 melted water and freezes so quickly that no bubbles form.
When an iceberg falls into the ocean, a layer of water 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 ocean.
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