Middle Eocene bulk sediment, benthic and planktic foraminiferal stable isotop...
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Major ice sheets were permanently established on Antarctica approximately 34 million years ago, close to the Eocene/ Oligocene boundary, at the same time as a permanent...
约3400万年前，在接近始新世-渐新世（Eocene/Oligocene）界线的时期，巨型永久性冰盖便在南极洲（Antarctica）形成，与此同时正值一场永久性……
