I agree to a peanut gallery in theory too... why wait weeks for a 300 post thread to close when you have info that is relevent. The practice of it is that there may be a precident for not having a concurrent PG, and that Faith can easily get distracted from strata formation by multiple poster inputs. She is apt to answer all posters and the arguments get muddled. Let Jazzns have at it awhile.
Thanks to JonF and that ground imaging stuff...that will refine my searches as to finding erosional features in strata that I was having little luck with previously on google.
ABB