Geez- I never knew it was so complex!
Guess I always took it for granite.
(I apologize for that inexcusable Intrusion. I should be ashamed for using your post to Cobble together a collection of lame geology puns. I am clearly Graben at straws. I like you, in a Plutonic way...please understand I am not finding fault with your post. Its just that any opportunity for puns just whet my apatite. Andesite provides a perfect forum!
I havent done a pure pun post in a while but I Felsic after the last one and needed time to recover. When it comes to offering opportinities for puns, well your post was a Butte. I have enjoyed your posts- They are Gneiss. If my post upsets you, well, then TUFF SCHIST!)