hesperian-epoch

Proper noun

The second of the three Martian geologic epochs, approximately from 3,500 million years ago to 1,800 million years ago, marked by lava flows, preceded by the Noachian epoch, and followed by the Amazonian epoch.

Origin

Named for the Hesperia Planum

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"hesperian-epoch." YourDictionary, n.d. Web. 16 January 2019. <https://www.yourdictionary.com/hesperian-epoch>.

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hesperian-epoch. (n.d.). Retrieved January 16th, 2019, from https://www.yourdictionary.com/hesperian-epoch

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