Last Updated
：2025/11/20
Paleoproterozoic
Proper noun
Japanese Meaning
（地質学）約25億年前から16億年前までの時代。大気中の酸素濃度が劇的に増加したことが特徴とされる時代。
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(geology) The era from 2,500 Ma to 1,600 Ma, marked by a dramatic increase in atmospheric oxygen.
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Paleoproterozoic
Paleoproterozoic rock formations preserve crucial evidence of Earth's oxygenation and early continental growth.
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Paleoproterozoic rock formations preserve crucial evidence of Earth's oxygenation and early continental growth.
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