Sea+Stacks+and+Stumps

written by michelle price =__sea stacks and stumps __=

//What is a sea stack?//
A sea  stack is a pillar of rock found in the water close to a coastline. Sea stacks are common along many of the world's coastlines, and some have even become quite famous. Like other features found along shorelines, sea stacks  are also in a constant state of flux, with new  stacks  emerging all the time while old ones disappear. Some sea stacks  have been known to erode into very unusual and striking formations, making them popular subjects for photographers and painters.

Essentially, a sea  stack is like a very small island, and in some cases,  sea stacks  have actually started out as islands which have been worn away.

//how is a sea stack formed?//
A sea  stack is caused by the natural erosion of headlands along the coastline. Typically, the ocean wears a hole through the headlands first, creating an arch which slowly expands over time as it erodes. Ultimately, the arch collapses, leaving a sea  stack on one side and the headland on the other. Separated from the shoreline, the sea  stack will slowly start to erode, ultimately melting away into the water or collapsing.

//Who and what makes sea stacks popular and for what purposes?//
Many migratory birds use sea stacks  for nesting and shelter, appreciating their isolation and relative safety. Sea stacks are also popular among rock climbers, since many such  stacks  pose interesting and fun climbing challenges.

//where are sea stacks found?//
The distribution of sea stacks  in an area varies, depending on the kind of rock they are formed from, ambient weather conditions, and the prevailing currents of the water. In some cases, an area may be littered with sea stacks  made from very hard stone, while in other instances a shoreline has only a few  stacks  composed of soft, crumbly materials like limestone and sandstone. Since many headlands are formed from the former ocean floor, some sea stacks  also reveal interesting fossil remains as they erode. when eroded they become sea stumps.

//what is a sea stump?//
a sea stump is the base of the sea stack after most of the erosion is complete and that the sea stack has lost a great amount of its height.

Produce a revision wiki page detailing the formation your selected landforms:
 * ==Title of Coastal Feature ==


 * 1) How erosion and/or deposition processes produce the landform.
 * 2) Maps and diagrams of the process of formation.
 * 3) Examples of the landform(s) with at least two images/maps.
 * 4) Links to the sources of information, images and maps.

 Remember: Your target audience are fellow GCSE/IGCSE students.  Once you have produced your wiki page you will be asked to review one produced by one of your peers. You should proof read it - changing any spelling and punctuation as necessary.  You should also try and contribute something extra to the wiki page you are reviewing - an additional example, a relevant clip from YouTube or Google Video or some additional explanation. || sources: http://www.wisegeek.com/what-is-a-sea-stack.htm http://media-2.web.britannica.com/eb-media/50/96050-004-BCF58831.jpg http://www.maine.gov/doc/nrimc/mgs/explore/marine/sites/mar02-4.gif