I've missed some of this thread, and my memory may be faulty, but I thought that microscopic shocked quartz was first documented at Upheaval Dome by Gene Shoemaker, perhaps 20 years or so ago. I don't recall now where I learned that. Anyone else? Kim -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of zaurak@digis.net Sent: Wednesday, January 28, 2009 10:05 AM To: Utah Astronomy Subject: Re: [Utah-astronomy] More on Upheaval Dome Canyonlands certainly has no shortage of unique features not seen anywhere else. No virus found in this outgoing message. Checked by AVG. Version: 7.5.552 / Virus Database: 270.10.15/1921 - Release Date: 1/28/2009 6:37 AM