geo (landform)

{{short description|Inlet, a gully or a narrow and deep cleft in the face of a cliff}}

{{Use dmy dates|date=April 2022}}

File:Calder's Geo - geograph.org.uk - 1518181.jpg, Shetland]]

File:Geo of Sclaites - geograph.org.uk - 1730125.jpg, Caithness]]

A geo or gio ({{IPAc-en|ɡ|j|oʊ}} {{respell|GYOH|'}}, from Old Norse gjá[https://web.archive.org/web/20120712233941/http://oxforddictionaries.com/definition/english/geo Oxford Dictionary of English] (retrieved 2014-10-15)) is an inlet, a gully or a narrow and deep cleft in the face of a cliff. Geos are common on the coastline of the Shetland and Orkney islands. They are created by the wave driven erosion of cliffs along faults and bedding planes in the rock. Geos may have sea caves at their heads. Such sea caves may collapse, extending the geo, or leaving depressions inland from the geo. Geos can also be created from this process.{{cite web|title=Geo|url=http://www.fettes.com/shetland/geo.htm|publisher=Fettes College |access-date=9 September 2011|archive-url=https://web.archive.org/web/20090301013111/http://www.fettes.com/shetland/geo.htm|archive-date=1 March 2009}}