A chemical analysis of these stones provides some compelling early evidence. Source: https://www.livescience.com/jurassic-mantle-plume-lurking-under-africa.html
Tag: mantle
Fluid in superdeep diamonds may be from some of Earth’s oldest unchanged material
Primordial rock deep in the mantle and dating to just after Earth’s formation could yield insights about the planet’s formation and evolution Source: https://www.sciencenews.org/article/fluid-superdeep-diamonds-may-be-some-earths-oldest-unchanged-material4…