Meaning of Passage

[Cooliegirly]

"...only the passage of centuries or millennia will enable new soil to form."

What does passage here mean?

[Pamela]

I think that centuries and millenia ago new soil will be enable ...cooliegirly
Centuries and millenia imply many, many, many, many times

[Tamara]

Hi

I’d understand passage here as the general reference to the 'time flow'.
So - as times goes by (looong time, many centuries going one by one, "in passage"), new soil will be formed.

Tamara
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It’s impossible to learn swimming without entering the water…

[Pamela]

Yes, Tamara. After passing centuries and millenia new soil will be formed

[Cooliegirly]

Ah, ok. Thank you.