Hesperian epoch

短语

释义与例句

name
  1. 1.

    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.

词源

Named for the Hesperia Planum

来源：wiktionary