geology e-mail lists

Just because the link doesn't seem to show up well in my reply to the comments of Lukysh to one of my recent posts, I'll put it here with a proper link:

The geo-metamorphism e-mail list seems to be a very good resource for answers to questions on any number of technical topics. I also note that there are a number of other geology (and other sciences) e-mail lists on that server (click on the "Email Lists button in the upper left corner).