I heard the theory from the SuspiciousObserver channel that the crustal displacement is only temporary, if it happens.
the polar excursion is temporary , not crustal displacement
displacement means permanently displaced
there is pole flips called chrons
and there is
A geomagnetic
excursion, like a geomagnetic reversal, is a significant change in the Earth's
magnetic field. ... This is partially due to them not being recorded well within the sedimentary record, but also because they likely do not extend through the entire geomagnetic field.
, a quick flip and back
last excursions :
The Gothenburg Magnetic Excursion in a broad sense ranges from 13,750 to 12,350 years BP and ends with the Gothenburg Magnetic Flip at 12,400−12,350 years BP (= the Fjärås Stadial in southern Scandinavia) with an equatorial VGP position in the central Pacific. The Gothenburg Magnetic Flip is recorded in five closely dated and mutually correlated cores in Sweden. In all five cores, the inclination is completely reversed in the layer representing the Fjärås Stadial dated at 12,400−12,350 years BP. The cores were taken 160 km apart and represent both marine and lacustrine environments. The Gothenburg Magnetic Flip represents the shortest excursion and the most rapid polar change known at present. It is also hitherto the far best-dated paleomagnetic event. The Gothenburg Magnetic Excursion and Flip are proposed as a standard magnetostatigraphic unit.
yes there is records of these ...not in history books but in the rocks themselves
happen every 12000 years or so
Look at the number of catastrophes that have befallen our planet in sync with magnetic reversals during the last 115,000 years alone:
Catastrophes in sync with equinoctial precession
(kya = thousands of years)
115 kya – Blake magnetic reversal. Spikes in radioactive carbon-14 and strontium. Ice age begins abruptly following a period of warmth similar to today’s. Sea levels surge 20 feet, then plunge at least 50 feet, in less than a century.
43 kya – Laschamps magnetic excursion. Beryllium spike (three times normal). Carbon-14 spike (two times normal). Ice age begins abruptly. Rising reefs.
34 kya – Lake Mungo magnetic excursion. Beryllium spike. Carbon-14 spike (almost twice normal). Short-term ice build-up, then ice age ends abruptly. Lake Missoula flood. Lake Bonneville flood. Intensive volcanism. Neanderthal disappears.
23 kya – Mono Lake magnetic excursion. Ice age begins abruptly. Major volcanism. Spikes in radioactive beryllium and carbon-14 (four to five times normal). Mass extinction. European forest elephant disappears. Mammoths clobbered.
11 kya – Gothenburg magnetic excursion. Mass extinction; 72% of large mammal species go extinct, whereas only 10% of small mammal species disappear. Spikes in radioactive carbon-14 (three to four times normal), beryllium-10 (two to three times normal), iridium (two to three times normal). Spikes in CO2 and many other elements. Rapid and severe ice build-up, then ice age ends in less than 20 years and today’s warm period begins. Worldwide volcanism. Nile River flood. Connecticut River flood. Lake Missoula flood. Lake Bonneville flood. Gulf of Mexico flood. St. Lawrence River flood. Worldwide tectonic uplift. Creation of the Carolina Bays.
from
No dramatic effects from a magnetic reversal? - Evolutionary Leaps ...a reply to a Sott article
