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Mysterious new substance possibly discovered inside Earth's core By Ben Turner, Live Science, February 2022 The planet's core could be a mushy mix of solid and liquid. New “hidden world” discovered in Earth's inner core By Joanna Thompson, Live Science, October 27, 2021 The core isn't a "boring blob of iron" after all. The paper is: Butler, R. and Tsuboi, S., 2021. Antipodal seismic reflections upon shear wave velocity structures within Earth's inner core. Physics of the Earth and Planetary Interiors, 321, no.106802 Yours, Paul H.
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Earth's Magnetic Field Almost Collapsed 565 Million Years Ago
Oxytropidoceras posted a topic in Fossil News
Earth's Magnetic Field Almost Collapsed 565 Million Years Ago Our planet's core probably started solidifying in the late Ediacaran period, which recharged the magnetic field in the nick of time. https://motherboard.vice.com/en_us/article/9kpywp/earths-magnetic-field-collapse-ediacaran-core-solidification https://www.newsweek.com/earth-magnetic-field-collapse-inner-core-solid-geodynamo-solar-wind-1307659 The (paywalled) papers are: Richard K. Bono, John A. Tarduno, Francis Nimmo & Rory D. Cottrell 2019. Young inner core inferred from Ediacaran ultra-low geomagnetic field intensity. Nature Geoscience 12, pages 143–147. https://www.nature.com/articles/s41561-018-0288-0 Peter Driscoll, Geodynamo recharged Nature Geoscience 12, pages 83–84 https://www.nature.com/articles/s41561-019-0301-2 It is strange how so many odd things occurred during the Ediacaran period. One question is how did this along with everything else did or did not affect evolution of plants and animals? Yours, Paul H.