Well yes folks we are out on the briny again with The Skipper; this time a day sail to Motuihe Island. It was a bit blowy choppy over and back but still a great day with new friends – spotify tunes, yacht rock, and classic road trip play lists kept us humming along.
Spent a pleasant evening back on the mooring with chicken wraps for dinner. Woke up to a calm morning and a lazy start to the day… coffee and up and go (liquid box breakfast) – still deciding what to do at 10 am… no rush its Father’s day!
This weekend I sailed with a friend to Rangitoto Island in the Waitemata Harbour, Auckland. It is one of Auckland’s many extinct volcanoes, and it’s youngest, just 600 years.
The island is home to the former site of a WWII controlled mine base, basically they stored mines there, that were used to protect the entrances to the Waitemata Harbour and approaches to Auckland from the threat of invasion during WWII.
The site is heavily contaminated with asbestos left over from the roofing and building materials that they used at that time. Efforts have been made to for a number of years to try and get the site cleaned up. A tender was raised by the Department of Conservation in March 2018 for asbestos removal works, so hopefully in the future we can look forward to the site being cleared of the hazardous material.
Rangitoto is older than previously believed. Photo / Brett Phibbs
Rangitoto may be much older – and more explosive – than previously believed.
A new study has led scientists to reassess how volcanoes may behave in the future and could be a large step toward unlocking Auckland’s mysterious volcanic past.
Contrary to the long-held belief that Rangitoto was formed less than 700 years ago and has erupted only twice, University of Auckland researchers now suspect there may have been intermittent activity from between 1500 years ago to 500 years ago.
Alongside basaltic ash from the island volcano’s most recent eruption between 500 and 550 years ago, sediment samples taken from Lake Pupuke have revealed evidence of minor eruptions 922 years ago, 1040 years ago and 1500 years ago.
Read More – NZ Herald
New Rangitoto volcano research prompts re-think
A new discovery that shows that Rangitoto erupted “semi-continuously” for about 1000 years is prompting scientists to re-think what the volcano could do in the future.
The most recent volcano to erupt in Auckland, Rangitoto was thought to be close to 550-years-old and to have erupted once or twice in its lifetime.
However, new University of Auckland research shows that the volcano actually erupted “intermittently” or “semi-continuously” from about 1500 years to 500 years ago, smashing traditionally-held beliefs about volcanoes here and around the globe.
The findings are also prompting scientists to re-think how Auckland’s volcanoes will behave in the future.
“The old paradigm was that these volcanoes erupt suddenly in a new location each time, and only live for months to a year or two,” said lead researcher Associate Professor Phil Shane.
Read More – New Zealand Herald