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【地球科学】地球の深部70キロ超、海洋マントルに生物由来の炭素 [すらいむ★]
https://egg.5ch.net/test/read.cgi/scienceplus/1725979096/
https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcS6fr0cQ3UXq4wNMLF2hR-ksORjpvPcRZDPtryF2Rh5i-pDl6h3E6sHxTw&s=10.jpg