# a foot of dirt

**URL:** <https://boards.straightdope.com/t/a-foot-of-dirt/21819>\
**Category:** Factual Questions\
**Created:** [June 9, 2000, 1:19am UTC](https://boards.straightdope.com/t/a-foot-of-dirt/21819 "2000-06-09T01:19:46Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![insider](https://avatars.discourse-cdn.com/v4/letter/i/bbe5ce/32.png) [@insider](https://boards.straightdope.com/u/insider)\
**Post date:** [June 9, 2000, 1:19am UTC](https://boards.straightdope.com/t/a-foot-of-dirt/21819/1 "2000-06-09T01:19:46Z")

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Given different locations, topology, and weather how long would it take mother nature to create one foot of soil?

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**Author:** ![AWB](https://avatars.discourse-cdn.com/v4/letter/a/bb73d2/32.png) [@AWB](https://boards.straightdope.com/u/AWB)\
**Post date:** [June 9, 2000, 1:52am UTC](https://boards.straightdope.com/t/a-foot-of-dirt/21819/2 "2000-06-09T01:52:03Z")

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If I remember from my ecostudies in school, one inch of topsoil is made every 100 years. So a whole foot would take 1200 years.