Reexamination of the rate of desert varnish formation reported south of barstow,California

Desert varnish is reported to have formed in 25 years on desert pavement stones in an abandoned road south of Barstow, California. It has been discovered that stones buried close to the surface of the roadbed and adjacent desert pavement bear the same dark desert varnish as the exposed stones at the surface. This and other observations refute the claim of 25 year old varnish.