Last Updated:2025/11/20
The most recent of the Martian geologic epochs, from approximately 1.8 billion (1800 million) years ago (the end of the Hesperian epoch) to the present.
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Amazonian epoch
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Source Word
Amazonian epoch
Proper noun
Japanese Meaning
火星の地質時代のうち、最も新しい時代。約18億年前(ヘスペリア紀の終わり)から現在に至る期間を指す。
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