On May 12, 2014, at 7:22 PM, Eric Black wrote (re "Zia formation")
Here’s some discussion on this very mailing list from 2008: http://www.sharedweight.net/pipermail/callers/2008-July/001634.html
In the thread Eric cites, there are a couple references to what seems to be the original use of "Zia" formation, "Weston Mountain Zia". When I clicked on the link in those messages from 2008 http://fam.bmi.net/zia.htm I found it was no longer valid. A little searching revealed the the information is now at http://fam.bmi.net/westonmtzia.htm --Jim