With some forest soils, you can't do that at all. The colours are much richer, when they're wet. Under that, there's the mocha fudge ice cream, then a layer that's the same colour as the underneath of my car. It looks rusty. This slice of the forest floor makes up a miniature profile of the soil.
Soil scientists call each of the different layers a soil horizon.
The mineral soil in Pacific Spirit Park is formed by chromatography action.