Is it me but the water in my toilet bowl now swirls counter clockwise? Am i imagining this? It was always clockwise, wasn't it???
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Magnetic poles do flip every few thousand, but it's a slow process, it doesn't happen quickly. The problem with that is that for the years that it takes to flip, Earth's magnetic field weakens and more gamma rays hit Earth and humans and animals are exposed to increased radiation... causes mutations, cancers, and other ills.
Doesn't happen quickly?
Ask those pot bellied elongated skulled giants in Antarctica about that.
Are you referring to the skulls found in Paracas, Peru? Yup, I'm familiar with that mystery. But how does that refute what I said about pole shift?
Oh, I'm not refuting the pole shift. It's the only thing I. Aware of that cold flash freeze a civilization.
Ah well, now that's a different matter. We were discussing magnetic pole shift. What you are referring to is a much more controversial subject, actual, physical pole shift. There is evidence in Antarctica and elsewhere that once regions that were temperate and fertile "suddenly" became frigid and uninhabitable. Various theories from Immanuel Velikovsky, Zecharia Sitchin, and others describe how (in their opinions) the Earth actually rolled over physically, and suddenly in a matter of hours leading to widespread cataclysms and the Earth being wiped clean of nearly all living things.
Ancient flood accounts from nearly every civilization and mastodon carcasses being found at the Arctic Circle with flowers and leaves still in their mouths suggest perhaps something like that happened in the distant path.
But we can't conflate the two "poles"... magnetic poles refer ONLY to the magnetic field of N and S. The physical poles are specific geological positions and for the most part are very stable.... until they aren't. Some theories suggest that we are about to experience a physical pole shift, but so far it's in the realm of conspiracy theories, the planet Nibiru, and the Zeta Talk website (https://www.zetatalk.com/ ).
I'm not saying any of these cataclysm theories are valid, just putting them out there for you to consider.
I'm not sure we have any definitive information on the switch event and how long the process takes. It could be fast or slow, but the time scale is another important question. Does it take minutes, hours, days, months, years, decades or centuries? I don't know if enough evidence has been discovered to know with any certainty. I believe the periodicity of the pole swap was something like every 60k+ years, of course we don't have any human records of the pole shift, so knowing anything with certainty is based on geological evidence and unfortunately our time scales on this type of evidence is not very accurate.
Generally scientists believe that magnetic pole shifts happen approx. every 300,000 years. I'm basing my statement on things I have read in the past about magnetic pole shifts. I believe such conclusions were drawn from volcanic ash and other geological sediments that show ferrous (iron) deposits responding to magnetic alignments before being solidified in situ. And we can see that the current magnetic poles have been slowly meandering for several decades, as shown here: https://www.ngdc.noaa.gov/geomag/GeomagneticPoles.shtml
Then there is this:
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwi_ru6exeX9AhVrIEQIHRKbD2UQFnoECBcQAQ&url=https%3A%2F%2Fwww.space.com%2Fearth-magnetic-field-unlikely-to-flip&usg=AOvVaw0rNXPPyu74LGlhgKPjqYeT
I think the problem with our ability to estimate geological core samples is limited by carbon 14 dating inaccuracies. Organic matter needs to be located in the same strata as the reoriented ferrous materials that show one directionality of magnetic alignment over another. The issue is that the time can be estimated by the ratio of decay of the carbon-14 isotope vs the daughter isotope. This is all relied upon with the factor that the carbon-14 amount is consistent on this planet. Unfortunately, we have found that carbon-14 levels are artificially deposited by space debris that impacts the earth. Since the rate of additional carbon-14 deposit on the planet is unknown, it fouls up the calculations and makes the usage of carbon-14 aging unreliable.
The core and rock samples used to detect previous pole shifts did not rely on Carbon-14 dating, as inorganic materials cannot be dated that way...only organic materials (trees, bones, etc.) can be C-14 dated. The geologists who detected the pole shifts did so based on the directions that ferrous (iron, ergo magnetic) were pointing in situ when they were discovered. The ferrous samples pointed in different directions other than magnetic N-S at the time they were discovered.