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   Global Museum (globalmuseum@mastodon.online)'s status on Wednesday, 05-Mar-2025 12:53:31 JST Global Museum

   Scientists found an ancient kauri tree that captured the last collapse of Earth's magnetic field and it will happen again.
   A kauri tree buried for thousands of years in New Zealand has provided scientists with an unprecedented record of Earth's magnetic field during a near-reversal event.
   The ancient tree, unearthed during geothermal plant expansion in Ngāwhā, measures 65 feet long and eight feet in diameter.

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     Maxi 10x 💉 (frumble@chaos.social)'s status on Wednesday, 05-Mar-2025 12:53:30 JST Maxi 10x 💉

     in reply to

     @globalmuseum 42k years sounds rather extreme for wood. Can you provide a source?

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     Jon Sullivan (joncounts@mastodon.nz)'s status on Wednesday, 05-Mar-2025 12:54:06 JST Jon Sullivan

     in reply to

     • Maxi 10x 💉

     @frumble @globalmuseum Kauri have excellent wood and their logs do last for *ages* when buried in anoxic wetland conditions.

     Here's a newspaper link to the story of this tree.

     https://www.nzherald.co.nz/northern-advocate/news/ancient-northland-swamp-kauri-solves-42000-year-old-mystery/R3KTH5HHDBEWICCI3B63FXM2OM/

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