[Phil V.]

Stereo pair of unparallel strata . . .

[Don Joe]

Those little balls are all over the place. Whatever they are, they seem to be a regular feature of the place, and were either formed well before the layering began, or were somehow formed, all in the same size range, throughout the timeframe in which the layers were formed. (I'm presuming it took a significant amount of time for those layers to form.) This is all my non-rock-guy WAG, of course. I'm a writer/programmer/photographer, not a rock-guy, dammit, Jim! <g>