Category
page 1Eratosthenian
Mare Nubium
lunar mare
Q170067
lunar mare in the far north of the Moon
Mare Smythii
lunar mare
Agrippa
lunar impact crater
Mare Vaporum
lunar mare
Theophilus
lunar crater
Eratosthenian
The Eratosthenian period in the lunar geologic timescale runs from 3.2 billion years ago to 1.1 billion years ago. It is named after the crater Eratosthenes, which displays characteristics typical of craters of this age, including a surface that is not significantly eroded by subsequent impacts, but which also does not possess a ray system. The massive basaltic volcanism of the Imbrian period tapered off and ceased during this long span of lunar time. The youngest lunar lava flows identified from orbital images are tentatively placed near the end of this period.
Mons Rümker
mountain on the Moon
Picard
Moon crater
Fabricius
lunar impact crater
Theon Senior
lunar impact crater
Theon Junior
lunar crater
Manilius
lunar impact crater
Horrocks
lunar impact crater
Werner
lunar impact crater
Sharonov
lunar crater
volcanism on the Moon
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