Hardpan

Rarity: Common

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At a glance

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Notion

Domain

Science and technology

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What Wikipedia says

In soil science, agriculture and gardening, hardpan or soil pan is a dense layer of soil, usually found below the uppermost topsoil layer. There are different types of hardpan, all sharing the general characteristic of being a distinct soil layer that is largely impervious to water.

Excerpt from the Wikipedia article “Hardpan”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Zumthie, Public domain, via Wikimedia Commons.