[KC Burke]

I look at it this way:

We have a “wet area.” An upper strata of that wet area had organics to the extent that grass grew. A lower strata did not. The lower strata, like the upper strata was still within a zone we are calling a wet area.

The lower strata, when saturated, would sometimes be also exposed to rain. The rain would repeatedly carry off the “fines”, such a fine sands and smaller grained non-organics. As it did so, the larger gravels were striated into rivulets due to the action of the small grains being carried by water pushing the larger cobbles into stripes.

[KC Burke]

I must correct the first paragraph of my above concept outline, it should have read as follows:

We have a “wet area,” [the Christy Jones Memorial Lawn and Undermined Area] An upper strata of that wet area had organics to the extent that grass grew. A lower strata did not. The lower strata, like the upper strata was still within a zone we are calling a wet area.

There...fixed it.