Quote of the Moment

You do ill if you praise, but worse if you censure, what you do not understand.
- Leonardo da Vinci

Thursday, August 17, 2006


I hope I didn't post this already, but I am amazed at the veining in this cut-away section of Maine granite. Did I post this? Oh, well. I still like it.
Photo by A. Graf
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1 comment:

Ann said...

John, my hydrogeologist friend, tells me that those white veins in the rock are called dikes.
". . .a dike is all good when it comes to geology - simply an intrusion of magma into an existing rock weakness such as a joint or fracture and you get re-consummation and a bit of metamorphism of some parent rock along the interface."

So, there you have it.

3:35 PM

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