Soil will either erode away forming either soil at a different location or a river delta, etc. or new soil overlays older soil and, over time, the older soil becomes rock. Go out and take a look at mud stone, fine conglomerate shale, etc. You can go out in your back yard and dig a hole, you’ll find larger rock and harder digging the further down you go. Hillsides will waste away, sometimes by landslide. Erosion takes everything downhill. Mount St. Helens is a slightly different tale. Ash erodes quickly at the surface and forms tuff at depth. Trees and bushes recover quickly as volcanic ash is rich in nutrients. You can drive up the North Umpqua River to Crater Lake and see what Mt. St. Helens will look in four thousand years.
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Do you always completely miss the point?
What you posted in this reply makes everything else that you believe a lie.
And soil doesn’t always compact sufficiently to stand. Only high ‘R’ value soils do that. Highly plastic soils flow rather than compacting to such an extent. If the Earth was old, those plastic soils would all be at the bottom of the ocean, instead of standing on tall, steep slopes as they do in so many places.