“Petrifaction is the result of a tree or tree-like plants having transitioned to stone by a mineralization process that often includes permineralization and replacement. The organic materials making up cell walls have been replicated with minerals (mostly a silicate, such as opal, chalcedony, or quartz).”
Theo_Belk on April 10th, 2020 at 01:50 UTC »
Agate. Not opal.
jdele11 on April 10th, 2020 at 03:03 UTC »
How do they know it's not 224 million?
ellieD on April 10th, 2020 at 04:36 UTC »
Google: Can trees turn into opals?
“Petrifaction is the result of a tree or tree-like plants having transitioned to stone by a mineralization process that often includes permineralization and replacement. The organic materials making up cell walls have been replicated with minerals (mostly a silicate, such as opal, chalcedony, or quartz).”
TIL!