Страж Пустоши (Badlands Guardian): различия между версиями

The head is a [[Drainage|drainage feature]] created through [[erosion]] of soft, [[clay]]-rich soil by the action of [[wind]] and [[water]].<ref name="Sydney Morning Herald"/><ref name="AIH">[http://www.cbc.ca/asithappens/features/2006/alberta_rock_sculpture_20061026.html CBC Radio]: As It Happens "Alberta's Aztec Rocker?" (Includes taped interview with geology professor Dr. Froese)</ref>

The arid [[badlands]] are typified by infrequent but intense rain-showers, sparse vegetation and soft sediments. The 'head' may have been created during a short period of fast erosion immediately following intense rainfall. Although the image appears to be a [[wikt:convex|convex]] feature, it is actually [[wikt:concave|concave]] — that is, a [[valley]],<ref name="As It Happens">[http://www.cbc.ca/asithappens/features/2006/GIANTHEAD_3d.jpg As It Happens] 3D rendering by CBC Radio{{dead link|date=September 2013}}</ref><ref name="Time Magazine"/> which is formed by [[erosion]] on a [[stratum]] of [[ clay]],<ref name="Time Magazine"/> and is an instance of the [[Hollow-Face illusion]]. Its age is estimated to be the in hundreds of years at a minimum.<ref name=Global>{{cite web|title=The Badlands Guardian|url=http://www.canada.com/globaltv/edmonton/story.html?id=977b4fcb-81ad-4c44-bbfa-baaa800c6dc5|publisher=[[Global TV]]|archivedate=April 5, 2007}}</ref>

 

The feature was originally discovered by Lynn Hickox while examining images on the ''[[Google Earth]]'' application in November 2006.<ref name="Sydney Morning Herald"/> Suitable names were canvassed by [[CBC Radio One]] program ''[[As It Happens]]''. Out of 50 names submitted, seven were suggested to the Cypress County Council. They altered the suggested 'Guardian of the Badlands' to become ''Badlands Guardian''.<ref name="AIH"/>

==See also==