Coastallandforms102 - Sea Caves, Arches, Stacks and stumps

Sea Caves

http://pic.srv104.wapedia.mobi/thumb/21f014552/en/fixed/230/269/Seacave_fault.jpg?format=jpg,png,gif

http://pic.srv104.wapedia.mobi/thumb/21f014552/en/fixed/230/241/Seacave_dike.jpg?format=jpg,png,gif

http://pic.srv104.wapedia.mobi/thumb/21f014552/en/fixed/230/153/Littoral_sinkhole.jpg?format=jpg,png,gif

Sea cave collapse

http://pic.srv104.wapedia.mobi/thumb/21f014552/en/fixed/230/172/Belvedere_della_Grotta_di_Nereo.jpg?format=jpg,png,gif

Arches

http://cache.marriott.com/propertyimages/b/bohbm/phototour/bohbm_phototour24.jpg

.

Stacks

http://farm1.static.flickr.com/140/319733495_554b284985.jpg

http://www.maine.gov/doc/nrimc/mgs/explore/marine/sites/mar02-4.gif

http://www.rgs.edu.sg/events/geotrip/images/waveanim.gif

When the arch collapses, the sea ward pillar is left standing and becomes a stack. Continual wave erosion eventually reduces the stack into a stump.