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The biggest-ever sample of core material from Earth's mantle could have valuable clues into the origins of life
The upper mantle also wells up so that no gap opens ... This melting occurred as the mantle rose from deeper parts of the Earth towards the surface. The rocks reached the surface through a process ...
Nature1mon
Layer cake or plum pudding?
The findings from the upper mantle therefore require there to be complementary enriched material somewhere else. Second, several isotopically distinct components can be traced in volcanic rocks ...