Trees are awesome. They live, have a soul and sometimes even record apocalyptic events that occur on Earth.
Recently, in Ngawha, on New Zealand’s North Island, people discovered an ancient tree on a beach, and after scientific investigations, it appears the trunk contains a record of a reversal of Earth’s magnetic field in its ring.
Trees are majestic. They bleed, can communicate with each others and even sing. In their rings, they also sometimes record past devastating events such as drought, hurricanes, and even space explosions.
In the latest amazing discovery, a giant Agathis australis, also known as its Māori name Kauri was found during excavation works for a geothermal powerplant in Ngawha, on New Zealand’s North Island.
And after investigations, scientists have figured out that there’s nothing like this tree in the world, because its rings have a complete record of a poleshift event that occurred between 41,000 and 42,500 years ago.
About This Phenomenal Tree
This is the first time a tree that lived during the entire event has ever been found.
The giant Kauri tree was found very well-preserved buried in 26 feet of soil.
This giant specimen measures 65 feet (20 meters) in length and 8 feet (2.5 meters) in diameter. It was 1,500 years old when it died, more than 41,000 years ago.
During its lifetime, the Earth’s magnetic field almost reversed completely, causing more radiation from the Sun getting through. And this spike in energy has been recorded within the tree rings.
As the lead researcher explains:
“This huge, lonely tree grew for some 1700 years across a remarkable period in our planet’s history when the Earth’s magnetic field flipped some 42,000 years ago, a period known as the Laschamp Excursion. Funded by the Australian Research Council we’re undertaking detailed measurements of the radioactive form of carbon through the tree rings.”
Magnetic Pole Reversal History
Magnetic pole reversals occur randomly. 183 events have taken place in the past 83 million years.
The process is slow, lasting between 2,000 and 12,000 years. But a recent study showed, the magnetic reversal could even stretch over 22,000 years. So it’s really not a sudden flip.
The last full reversal happened around 780,000 years ago. But recently, baffled scientists announced that the magnetic north pole had started moving unexpectedly towards Siberia.
The discovery of this old tree in New Zealand will enhance our comprehension of the magnitude and rate of change when the magnetic field reversed during the Laschamp. This is of great interest given recent changes in the Earth’s magnetic field. [Newsweek, Stuff.co.nz]