[Nailbiter]

cool pic

[johnny7]

Looks like its been liberally Photoshop'd...

[csvset]

layers of sediment.

Whale *hit.

[GulfBreeze]

Very cool! I wish we had a better idea of how big it is?

[teacherwoes]

Caused by global warming?

[Cheburashka]

Now they’re detailing icebergs?!?!

Or does each stripe signify a kill, and this is the iceberg that got the Titanic?

[J40000]

GLOBAL WARMING!!! GLOBAL WARMING!!! WE’RE THROWING TOO MANY EMISSIONS INTO THE ATMOSPHERE!!! WE’RE ALL GONNA DIE!!!

AND ALL THOSE POOR WIDDLE POLAR BEARS!!!

[Eye On The Left]

While most icebergs are white due to tiny bubbles trapped inside, which scatter the light in every direction, some pick up a multitude of colours due to various natural phenomena. Green stripes are the result of algae growing in the ice, while brown, black and yellow lines form as the ice sheets from which bergs are formed pick up layers of sediment.

In other words, the individual stripes were each deposited separately as horizontally layered sheets atop the ice while this berg was still attached to the much larger land mass from which it broke off and drifted out to sea. Each layer would then represent a different period of time. In this regard, it's very similar to layered sedimentary rock formations we see along highway road cuts, only they have broken off from their original source and floated out to sea. There are, however, isolated boulders known as 'glacial erratics' that have been transported vast distances by advancing ice sheets (over land). In fact, there are quite a few of these objects in the heart of Manhattan--in New York's Central Park. Some of the familiar boulders, however, are just large chunks left over from blasting done when they excavated underpasses to make roadways. Glacial erratics are often more rounded due to the abrasion that occurred during their long transport inside or at the base of the advancing ice. The blasted boulders are typically more jagged.

Finally, some of the true glacial erratics in Central Park originated from the Palisades of neighboring New Jersey. The rocks of the Palisades were once molten lava injected deep underground between pre-existing sedimentary rock layers. This happened as a great super-continent (Pangaea) was just beginning to split apart to form the Atlantic Ocean (~200 million yrs ago). Dinosaurs still existed at this time. OK, I know! Enough already. (don't ever get me started talking about rocks and earth history!)

[fella]

Dang! ............ It’s been so cold this last winter that it frooze a rainbow? Al aint going to like this news.

[The Mayor]

Kewl.

[Contra]

OK, where’s tourist guy because this is as much of a fake as that supposed huge wild boar the kid hunter shot a while back.