Pillar (landform)

A rock pillar on Flowerpot Island, Canada

A pillar is a landform, either of rock or earth, defined by the USGS as: "Vertical, standing, often spire-shaped, natural rock formation (chimney, monument, pinnacle, pohaku, rock tower)."[1] Some examples of rock pillars are Chambers Pillar, Katskhi pillar, Pompeys Pillar, and Pillar Rock.

The Oxford Dictionary of Geography defines earth pillar as: "An upstanding, free column of soil that has been sheltered from erosion by a natural cap of stone on the top. They are common where boulder-rich moraines have been subject to gully erosion, as in parts of the southern Tyrol."[2] A Hoodoo is another type of earth pillar. Examples of earth pillars are Awa Sand Pillars and Đavolja Varoš.

## See also

* Earth:Glossary of geology

## References

1. ↑ "Feature Class Definitions". Geographic Names Information System. http://geonames.usgs.gov/pls/gnispublic/f?p=154:8:3473637428650450. Retrieved 2011-07-25.
2. ↑ "Earth Pillar definition". Oxford English Dictionary. http://www.answers.com/topic/earth-pillar#ixzz1T8317QAD. Retrieved 2011-07-25.

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