Crags are formed when a glacier or ice sheet passes over an area that contains a particularly resistant rock formation (often granite, a volcanic plug or some other volcanic structure). The force of the glacier erodes the surrounding softer material, leaving the rocky block protruding from the surrounding terrain. Frequently the crag serves as a partial shelter to softer material in the wake of the glacier, which remains as a gradual fan or ridge forming a tapered ramp (called the tail) up the leeward side of the crag.[1]
In older examples, or those latterly surrounded by the sea, the tail is often missing, having been removed by post-glacial erosion.
^Chamber's Encyclopædia: A Dictionary of Universal Knowledge. Vol. 3. W.R.Chambers. 1897. p. 541. Retrieved 2019-11-03.
^Nitsche, F. O.; Larter, R. D.; Gohl, K.; Graham, A. G. C.; Kuhn, G. (2016). "Crag-and-tail features on the Amundsen Sea continental shelf, West Antarctica" (PDF). Geological Society, London, Memoirs. 46 (1). Geological Society of London: 199–200. doi:10.1144/m46.2. ISSN 0435-4052. S2CID 133161379.
crag, tail, this, article, multiple, issues, please, help, improve, discuss, these, issues, talk, page, learn, when, remove, these, template, messages, examples, perspective, this, article, represent, worldwide, view, subject, improve, this, article, discuss, . This article has multiple issues Please help improve it or discuss these issues on the talk page Learn how and when to remove these template messages The examples and perspective in this article may not represent a worldwide view of the subject You may improve this article discuss the issue on the talk page or create a new article as appropriate April 2015 Learn how and when to remove this message This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Crag and tail news newspapers books scholar JSTOR March 2010 Learn how and when to remove this message Learn how and when to remove this message A crag sometimes spelled cragg or in Scotland craig is a rocky hill or mountain generally isolated from other high ground The Abbey Craig a crag with tail near the University of Stirling The Wallace Monument stands on the crag at the right and the long tail slopes down leftward Salisbury Crags to the left and Arthur s Seat to the right with their tails sloping east to the right Contents 1 Origin 2 Examples 3 See also 4 ReferencesOrigin editCrags are formed when a glacier or ice sheet passes over an area that contains a particularly resistant rock formation often granite a volcanic plug or some other volcanic structure The force of the glacier erodes the surrounding softer material leaving the rocky block protruding from the surrounding terrain Frequently the crag serves as a partial shelter to softer material in the wake of the glacier which remains as a gradual fan or ridge forming a tapered ramp called the tail up the leeward side of the crag 1 In older examples or those latterly surrounded by the sea the tail is often missing having been removed by post glacial erosion Examples editExamples of crag and tail formations include Castle Rock the crag site of Edinburgh Castle and the Royal Mile the tail in Edinburgh Scotland Salisbury Crags and Arthur s Seat in Edinburgh North Berwick Law in North Berwick Scotland Three in or near Stirling Scotland including the rock on which Stirling Castle stands Scrabo Hill in Newtownards Northern Ireland site of the Scrabo Tower Ailsa Craig famous for curling stone mining Crag and tail features have been identified on the Amundsen Sea continental shelf off West Antarctica 2 See also editDrumlin Roche moutonneeReferences edit Chamber s Encyclopaedia A Dictionary of Universal Knowledge Vol 3 W R Chambers 1897 p 541 Retrieved 2019 11 03 Nitsche F O Larter R D Gohl K Graham A G C Kuhn G 2016 Crag and tail features on the Amundsen Sea continental shelf West Antarctica PDF Geological Society London Memoirs 46 1 Geological Society of London 199 200 doi 10 1144 m46 2 ISSN 0435 4052 S2CID 133161379 Holmes Arthur Principles of Physical Geology Halsted 1978 3rd ed pp 421 422 ISBN 0 471 07251 6 nbsp This article related to topography is a stub You can help Wikipedia by expanding it vte nbsp This glaciology article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Crag and tail amp oldid 1187634448, wikipedia, wiki, book, books, library,
