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HArd ROck

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A little bit of Bergen

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Jig along says:

I'll ask the silly question. What story does this rock tell you?

8th May 2009, 00:38

ookiine says:

I was a geology major in college for a bit. I can say a few things about that rock.

8th May 2009, 00:43

ookiine says:

Also... Nice rock.

8th May 2009, 00:44

Euphro says:

This rock was a granite once, about 1400 million years ago. The bands you see were caused by squeezing and stretching about 420 million years ago at depths within the Earth where the rock behaved like plastic due to the heat and pressure. The squeezing and stretching was caused by collision between continents during the closure of an ocean called Iapetus.

8th May 2009, 00:52

Tori says:

From the thumbnail, I thought it was cheese.

8th May 2009, 01:31

Caine says:

Very neat.

8th May 2009, 01:42


8th May 2009, 07:26

JokerXL says:

I was just going to say that Euphro, you beat me to it.

8th May 2009, 22:09

ookiine says:

You forgot to mention that it's a metamorphic rock, but you did say that it was reheated & pressurized.

9th May 2009, 17:21

Euphro says:

With all due respect, I was avoiding using too much terminology. If you look in the tags you can see how I would describe it. You don't need to say "metamorphic" because it is obvious from the rock name :)

9th May 2009, 21:39

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