Could they be dried up pulverized hackberry seeds? I noticed a bunch of white "calcium" looking "gravel" in the bottom of a metal rain-water trough, yesterday, that I drained. Sounds similar. Perhaps washed in from the surface?
Sent cellularly. -Don On Feb 13, 2012, at 11:59 AM, Andy Gluesenkamp <andrew_gluesenk...@yahoo.com> wrote: > This was different. First, I noticed small areas of white sand in pools in > the spring run. There were some now-dryish pools that had a coating of > "sand" on the bottom (but on top of the mud), as if they were filled during > the "high tide". We also noticed a 3/4-inch wide band of fine white sand on > top of the mud layer on walls about a foot above the water line (high tide > line?) along passage near WM. Also, areas where the floor dropped off were > covered in fresh white sand (sand over mud). We meant to collect a sample > for later "fizz" testing but, alas, the urge to splurge on Philly cheese > steaks and beer was too great for our group and we plumb forgot. > > Andy > > Andrew G. Gluesenkamp, Ph.D. > 700 Billie Brooks Drive > Driftwood, Texas 78619 > (512) 799-1095 > a...@gluesenkamp.com
