How deep would you have to dig to go back 100years? I know it

No one knows?

Has your yard gotten a foot of dirt in the past 5 years?

>>8543940
About an inch below the surface. That's how long it takes dirt to be made.

>>8543940
>>8544243
~3.50

>in general

stopped reading

>>8544613
underrated

>>8543940
It really fucking depends. In some places 1 mm is a thousand years, in others it's one.
It also depends on the depth (ie deposition era).

>>8544607
>>8544613
This, absolutely no more than a few inches unless of course it's in a region where sediment deposits are higher. To illustrate I'll just begin to list factors that could affect the accumulation of soil: water flow, earthquakes (even minor ones), landslides (even minor ones), amount and type of vegetation and/or detritus AKA leaves) nearby, rainfall, weather, soil pH, microbial ecology, etc. You get the idea, it's highly variable but in most places to go more than a foot you're talking multiple centuries or millennia.

>>8543940

I dug out a midden in my back yard, it was about 3 feet deep and had shit in there for ~200 years ago (when my house was built).