Scientists reveal evolutionary history of continent-sized regions in the deep mantle
A new study has revealed that two continent-sized regions in Earth's deep mantle have distinctive histories and resulting ...
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A blue miracle in the Eifel: How sapphires formed in volcanoes
Deep crustal rocks have more O-18 than melts from the Earth's mantle. As the age determinations show, the sapphires in the Eifel formed at the same time as the volcanism. In part, they inherited ...