I find the use of zircons in this context very interesting. Starting with the Wikipedia article: https://en.m.wikipedia.org/wiki/Zircon

I went down the rabbit hole and learned a bit about Geochronology: https://en.m.wikipedia.org/wiki/Geochronology

It is interesting how they “break up” dating depending on the time frame, for example some dating is only measured by “eon” (half a billion years), whereas the “finest” measurement seems to be “age” which corresponds to single digit millions of years.

A bit humbling to think that all of humanity can “fit” in the smallest geological measure of time.