Editing Land's End (section)

==Geology==
The cliffs are made of [[granite]], an igneous rock, which means they are resistant to weathering, and have steep cliff faces. There are two varieties of granite represented at Land's End. Adjacent to the hotel the granite is coarse-grained with large [[phenocrysts]] of [[orthoclase]], sometimes more than {{convert|5|in|cm|0|abbr=on}} in length. To the north, at the First and Last House, there is a finer-grained granite with fewer and smaller phenocrysts, and the different granites can be seen from a distance by the smoother weathering of the finer variety. The granite dates to 268–275 million years ago of the [[Permian|Permian period]].<ref name=geology>{{cite book|last=Hall|first=A|title=Geologist's Association Guide No. 19. West Cornwall|date=1994|publisher=[[Geologists' Association]]|location=London|isbn=0-900717-57-2|pages=50|editor=Second}}</ref> The contact zone between the Land's End [[pluton|granite pluton]] and the altered "[[country rock (geology)|country rocks]]" is nearby and the [[Longships Lighthouse]], offshore, is built on the country rock.<ref name=geology/>