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USGS CMG InfoBank: Dead Moon Live Earth

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Comment: 24:56 - 25:30 (00:34)
Source: Annenberg/CPB Resources - Earth Revealed - 14. Intrusive Igneous Rocks
Keywords: anorthosite, Moon, magma

Our transcription: The presence of very ancient anorthosite both on Earth and the Moon suggests that these worlds may once have been more similar in composition.
But Earth's interior, still geologically alive, has allowed our planet to continue evolving.
While the moon, now geologically dead, remains the same.
Indeed, the formation, ascent, and cooling of magma is one of the most significant agents of change in Earth's vast interior.

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