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Rock Formations of the World
Transcript of Rock Formations of the World
The Giant's Causeway is a rock formation found in Northern Ireland. Since the rock is a UNESCO World Heritage Site, it has its own address which is 44 Causeway road, Antrim, Bushmill, Northern Ireland
Rock Formations of the World
The Wave Rock
Cause and Changes
Cause and Changes
The Wave Rock is a Rock Formation in Hyden of Western Australia. It is about 340 kilometres west of Perth
The Giant’s Causeway is a large rock formation on the coast of Bushmill Northern Ireland. The stone monument appears as numerous rock pillars, hexagonal in shape and counting up to numbers around 40,000. These rock pillars range in size and differ in height. While some hardly tower over ants others reach heights of up to 25 metres. The rocks change colour with the day, changing from a sandy yellow colour, to a dark brown and a shadowed grey. This magnificent sight stretches over about 70 hectares. All of this is formed from Basalt, an igneous rock, this rock flowed as lava through volcanic activity about 60 million years ago but cooled once it was exposed to the sea. It is typical that basalt form columns when cooled, similar to the organ pipes in Victoria.
Mythology suggests that the massive monument was carved by a Giant named Finn MacCool, hence its name, but science knows that it was formed by volcanic activity. The lava flowed out into columns over three periods of time which is why there are many columns that vary in heights. The columns themselves are formed when the basalt pressured against each other and created its polygonal shape. This pressure was likely cause by disturbances such as fissures or simply more lava pushing out of the ground.
The wave rock gets its name because it literally looks a huge wave frozen in stone. A wave that many surfers dream to ride, a wave that looks like it’s about to crash down in the shore. It has several colours which range from yellow to a deep unsaturated brown. The rock is said to have been made from granite, thus resulting it to be an igneous rock, or a rock that is formed from cooling lava or magma. Despite the appearance of most igneous rocks, it is quite smooth and appears to have absolutely no chips or rough edges. This magnificent sea-remnant mass is about 14 to 15 metres high and a staggering 110 metres long that developed several millennia ago, approximately 2.7 billion years.
Though the rock did form over 2,700,000,000 years ago, it only surfaced quite gradually. The wind and the rain and other such harsh weather eroded away at the surface. This weathered happened in a certain way which caused the rock to have its unusual shape, though the softer rock lower than the original surface certainly had a factor in the shaping of the formation. The colour of the rock was also developed through the wind and rain. The rain dropped different chemicals onto the surface of the stone and caused it to change colour into grey, yellow and even red.
Image from: http://upload.wikimedia.org/wikipedia/commons/thumb/d/de/Wave_rock.jpg/1280px-Wave_rock.jpg
Image from: http://www.driveaustralia.com.au/images/gottagowa/user-gallery-images/rac-Wave-Rock_1002-1349751403-wave_rock_by_night-08-wave_rock_night-001.jpg
Algae on the wave rocks surface cause its black colour that turns brown in the dry season and also changes colour as the day progresses. This is why many photographers have captured its magnificence.
Image From: http://4.bp.blogspot.com/-_avKAG_M3Aw/UHV-cUrEAfI/AAAAAAAAAT4/Bl3Wvff2Sjc/s1600/Wave+Rock+023.JPG
Image from: http://www.covingtontravel.com/wp-content/uploads/2013/07/GiantsCauseway.jpg
Image from: http://www.titanicwalk.com/wp-content/uploads/2013/09/giants-causeway_2626379b.jpg
Image from: http://www.profissaoviajante.com/wp-content/uploads/2011/02/giants-causeway-two1.jpg