What makes icebergs to be different color?

These stripey ‘humbug’ icebergs look akin to nature’s version of Mark Rothko’s stripy paintings, with their clear blue, green and brown banding. These minty-looking icebergs are formed over thousands, if not millions, of years on the icy continent of Antarctica, when soil, blown dust or volcanic ash was sandwiched between frozen water.

As the summer melting begins, they float out to sea. Marbled and alone, they float on the ocean surface. Also, keep on the look out for other icy phenomena, like the bright green jade icebergs that float ashore, ‘frozen tidal waves’ and blue-lined icebergs.

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