A recent scientific research article has been quoted by the news as discovering ancient 'continents' on the bottom of earth's mantle. But how accurate is this really? Let's dig into the science behind the interior of the earth and decide if this piece of scientific journalism is nothing more than fake news on this episode of Rock Talk!


Sources:
News article: https://www.foxnews.com/science/mysterious-underground-continent-old-earth
Original journal: https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2019GC008437
Additional source: https://scitechdaily.com/research-finds-gigantic-masses-in-earths-mantle-untouched-for-more-than-4-billion-years/

Other info:
https://www.rsc.org/Education/Teachers/Resources/jesei/waves/home.htm
http://www.geo.mtu.edu/UPSeis/waves.html
http://hyperphysics.phy-astr.gsu.edu/hbase/Geophys/earthstruct.html