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Author Topic: The Giant's Causeway!! How was this formed?  (Read 10300 times)

Offline Seany

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The Giant's Causeway!! How was this formed?
« Reply #25 on: 27/03/2008 23:45:06 »
So it must be really difficult to get something like this..
Is this the only place where this pattern was formed?
 

Offline Seany

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The Giant's Causeway!! How was this formed?
« Reply #26 on: 27/03/2008 23:45:13 »
How about Pompeii?
 

Offline rosalind dna

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The Giant's Causeway!! How was this formed?
« Reply #27 on: 28/03/2008 01:04:32 »
The Giant's Causeway (or Irish: Clochán na bhFómharach)[2] is an area of about 40,000 interlocking basalt columns, the result of an ancient volcanic eruption. It is located on the north-east coast of Northern Ireland, about two miles (3 km) north of the town of Bushmills. It was declared a World Heritage Site by UNESCO in 1986, and a National Nature Reserve in 1987 by the Department of the Environment for Northern Ireland. In a 2005 poll of Radio Times readers, the Giant's Causeway was named as the fourth greatest natural wonder in the United Kingdom. The tops of the columns form stepping stones that lead from the cliff foot and disappear under the sea. Most of the columns are hexagonal, although there are also some with four, five, seven and eight sides. The tallest are about 12 metres (36 ft) high, and the solidified lava in the cliffs is 28 metres thick in places.

http://en.wikipedia.org/wiki/Giant's_Causeway

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Posted by: Seany 
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How about Pompeii?


Sean, Pompeii's destruction was a result of the volcano, Vesuvius exploding over 2 days during August AD 79.
http://en.wikipedia.org/wiki/Pompeii


 

Offline Bass

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The Giant's Causeway!! How was this formed?
« Reply #28 on: 28/03/2008 02:38:16 »
Pompeii was a Plinian eruption (named after Pliny the Elder, who described the eruption of Vesuvius that buried Pompeii), which is a very different type of volcanic eruption than the basalt flows of the Giant's Causeway.  Plinian eruptions (Vesuvius, Mt. St. Helens, Krakatoa) are explosive volcanoes that are closer to the rhyolite (silicic) end member of volcanic material.  These erupt high into the stratosphere with abundant ash and tephra falling from the sky.  The ash and tephra are what buried Pompeii, not a lava flow like those seen on Hawaii.
 

Offline rosalind dna

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The Giant's Causeway!! How was this formed?
« Reply #29 on: 28/03/2008 12:44:05 »
Pompeii was a Plinian eruption (named after Pliny the Elder, who described the eruption of Vesuvius that buried Pompeii), which is a very different type of volcanic eruption than the basalt flows of the Giant's Causeway.  Plinian eruptions (Vesuvius, Mt. St. Helens, Krakatoa) are explosive volcanoes that are closer to the rhyolite (silicic) end member of volcanic material.  These erupt high into the stratosphere with abundant ash and tephra falling from the sky.  The ash and tephra are what buried Pompeii, not a lava flow like those seen on Hawaii.
But the last time that Vesuvius blew it's top (exploded) was not
that long ago, historically in 1944 and it's the only mainland
European Volcano to have exploded within the last 100 years.
Also when Krakatoa exploded in 1883, it caused Tsunamis as far
away as South Africa.
 

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The Giant's Causeway!! How was this formed?
« Reply #29 on: 28/03/2008 12:44:05 »

 

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