Where does the extra dirt come from that buries an ancient civilization?

Question

I’m laying awake, not able to figure this out.

If our civilization were to be left untouched for thousands of years then over time it’d get covered in dirt. Some future generation would have to “dig up” our civilization in the same way we dig up artifacts from the ancient past.

Where does that dirt come from? Is it floating around in the atmosphere? Or does it get created somehow (ie. organic matter decomposing)?

My understanding is that older artifacts are buried deeper, which may not be the correct understanding. But is there some relationship to dirt vs time?

So many questions.

In: 18

Answer 1

Okay so, if you walk down a path in the dirt the path will get deeper because your compacting and pushing the dirt aside. And you clean and sweep your color right? The wind carries dirt to your things but you remove it.

Now of you love around sand this is a more active process because the wind picks up sand like crazy and it’s harder to brush away.