Posted on 07/15/2019 9:21:19 AM PDT by SunkenCiv
An ancient tree that contains a record of a reversal of Earth's magnetic field has been discovered in New Zealand. The tree -- an Agathis australis, better known as its MÇori name kauri -- was found in Ngawha, on New Zealand's North Island, during excavation work for the expansion of a geothermal power plant, stuff.nz reports.
The tree, which had been buried in 26 feet of soil, measures eight feet in diameter and 65 feet in length. Carbon dating revealed it lived for 1,500 years, between 41,000 and 42,500 years ago...
The lifespan of the kauri tree covers a point in Earth's history when the magnetic field almost reversed. At this time, the magnetic north and south went on an excursion but did not quite complete a full reversal.
Earth's magnetic field is thought to be generated by the iron in the planet's core. As it moves around, it produces electric currents that extend far into space. The magnetic field acts as a barrier, protecting Earth from the solar wind. This is a stream of charged particles from the Sun that could strip away the ozone layer if it were to impact the atmosphere.
When the magnetic field reverses -- or attempts to -- it gets weaker, leading to more radiation from the Sun getting through. Previously, scientists have linked extinction events to magnetic field reversals.
The newly discovered kauri tree's rings contain a complete record of a near-reversal -- the first time a tree that lived during the entire event has ever been found. "It's the time it takes for this movement to occur that is the critical thing...We will map these changes much more accurately using the tree rings," Hogg told stuff.nz.
(Excerpt) Read more at newsweek.com ...
And I ran...
Isn’t the AGW hockey-stick theory based on five (5) tree ring samples?
(Never mind the other ~78 ring samples in the age-grouping that don’t indicate AGW...)
Not me!
I'll have to locate one of those. Plug in, free electricity for ever!
The author is definitely going out on a limb in support of this hypothesis.
Lol.. mythical dating science. I believe their claim the hymalayas will melt by 2020 before I believe this drivel. I can’t believe this is still considered science by anyone.
Thanks. There’s actually an International Tree-Ring Data Bank!
OK, that’s a pretty amazing find... And that is one old tree..
Focus: Electric Power from the Earths Magnetic Field
August 3, 2016
Physics 9, 91
A loophole in a result from classical electromagnetism could allow a simple device on the Earths surface to generate a tiny electric current from the planets magnetic field.
https://physics.aps.org/articles/v9/91
I'll lumber on in there sometime.
:^)
That’s Tesla stuff right there.
They died or went to a warmer place. Some times you just gotta go somewhere else.
Your post is drivel.
“All that was great in the past was ridiculed, condemned, combated, suppressed - only to emerge all the more triumphantly from the struggle.” — Nikola Tesla
“Throughout space there is energy. Is this energy static or kinetic? If static our hopes are in vain; if kinetic and this we know it is, for certain then it is a mere question of time when men will succeed in attaching their machinery to the very wheelwork of nature.” — Nikola Tesla (February 1892)
It must have been a big kaboom!
While the anthropogenic impact on global species diversity is clear, the role of ancient human populations in causing extinctions is more controversial. New data presented this week at the Society of Vertebrate Paleontology meetings in Dallas, Texas, implicates early humans in the extinction of large mammals, birds and lizards in Australia. More precise dating of these extinction events places them 14,000 years after the first arrival of humans in Australia... Alroy estimated the likely time-range during which the extinction occurred based on the distribution of radiocarbon dates. He found that the megafauna disappeared between 27 and 40 thousand years ago. Using a similar method, he estimated that the first humans arrived between 50 and 61 thousand years ago. This confidently puts humans on Australia when the megafaunal extinctions occurred. The timings also suggest that there was a 14,000 year lag between the first appearance of humans and their impact on the megafauna.
Abstract: More than 85 percent of Australian terrestrial genera with a body mass exceeding 44 kilograms became extinct in the Late Pleistocene. Although most were marsupials, the list includes the large, flightless mihirung Genyornis newtoni. More than 700 dates on Genyornis eggshells from three different climate regions document the continuous presence of Genyornis from more than 100,000 years ago until their sudden disappearance 50,000 years ago, about the same time that humans arrived in Australia. Simultaneous extinction of Genyornis at all sites during an interval of modest climate change implies that human impact, not climate, was responsible.
"Spector NS-4 30KBC NEW 32,000 YEAR OLD BASS The NS-30K BC utilized what is believed to be the oldest wood ever used in the construction of a musical instrument. Obtained by Spector from logs discovered buried 40 feet deep in a sand quarry in Georgia, USA, the wood is perfectly preserved, due to the sterile nature of the sand and the natural decay resistance of the cypress wood itself.
Using carbon 14 testing techniques, samples of the wood were examined by Beta Analytics, in Miami, to check for radioactive decay in the small amount of carbon that is present in all living organisms. This wood was dated as 31,970 years old, plus or minus 570 years.
Only 1 built."
http://www.spectorbass.com/about/images/guitars/sidebar_NS-4-30KBC.jpg
You don’t believe it’s possible that God created this tree over 40,000 years ago?
A: Just two.
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