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You’re right, but the wording you’re using is different than what’s used here (but it is correct).
The stripes and rust colours are referred to mottling here. They are caused, as you accurately describe, by intermittent saturation and aeration of the soil. During saturated conditions, Fe2+ is deposited as it’s labile. Once things dry out again it turns to its Fe3+ form and oxidizes.
Once formed mottles are permanent features. Even if the local moisture regime changes the legacy mottling will stay.
Vegetation looks like it’s Ag land.
@ladicus@lemmy.world
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