Tuesday, June 29, 2010

Aucklands Volcanic Field



The Auckland Volcanic Field is made up of 50 basalt volcano. Most of the volcanoes in Auckland have only erupted once which means they are monogeneric volcanism.
Rangitoto has erupted a few times so that means Rangitoto is polygenetic volcanism.

Rangitoto is the youngest and largest volcano in Auckland. It takes up 50% of the Auckland Volcanic field. That volcano erupted about 600 to 800 years ago. It is 259 meters high.

Maori believe that Rangitoto gaurds the Waitamata harbour. When Rangitoto erupted out of the sea the Moari living closley on Motutapu Island must of thought it was the end of the world.

Rangitoto's name means Bloody Sky, it has 7 known lava caves and its cone is Scoria igneos rock. Rangitoto is a intraplate which means, in the middle of a techtonic plate it also means a hot spot for volcanic activity.

To me Rangitoto is an amazing volcano. But I hope it never erupts while im living in Auckland, all that ash cloud and lava it scares me just thinking about it.

Tuesday, June 15, 2010

For Writing-Disasters.


This morning we had to do a task for writing to organiser information report.
We had to do this because Ms Tito says that our writing is random.




A disaster is an event that causes destruction, pain and suffering. Disaster's can be natural or man made.

Natural disasters can be caused by extreme weather events, climatic conditions or changes in the earths crust. Natural disasters include cyclones, tornadoes, floods, droughts, bush fires, earthquakes and volcanic eruptions.

Man made disasters are usually the result of accidents, disease or war. They range from catastrophic evens like major wars and nuclear accidents which destroy huge amounts of the the environment and kill many people, to everyday occurrences like road accidents and crime.
Emergency services and charities rush to help when a disaster happens.

Disasters are a personal tragedy for the people involved.