Self-Reversing Mineral Resolution (Laschamp Paleointensity)
mechanism
Skeptics said an ancient magnetic-field collapse was just a rock trick — new measurements say it really happened.
Who they are
A geophysics finding about the Laschamp event, based on how strong Earth's magnetic field was in the rock record.
What they do
It settled a doubt about whether an apparent ancient collapse of Earth's magnetic field was real or a false signal in the minerals.
How it works
Paleointensity measurements of about 8 microtesla at the Laschamp/Louchadiere sites confirmed the field genuinely collapsed, rather than the reading being a 'self-reversing mineral' chemical artifact.
Why it matters
It strengthens the Laschamp excursion as a solid, peer-reviewed reference point for what a real magnetic-field collapse looks like.
The engine's record — word for word
Paleointensity measurements (~8 microtesla at Laschamp/Louchadiere) resolved the self-reversing-mineral skepticism, confirming the Laschamp excursion is a real field collapse, not a chemical artifact. Strengthens the real-excursion comparator. [TIER GEOPHYSICS-PEER-REVIEW; Apex (a)] [Report #103 (ECDO)]
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