Lower Imbrian
Lower Imbrian Periods of Lunar geologic time : Pre-Nectarian - Nectarian - Lower Imbrian - Upper Imbrian - Eratosthenian - Copernician In the Lunar geologic ...
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Upper Imbrian
Upper Imbrian Periods of Lunar geologic time : Pre-Nectarian - Nectarian - Lower Imbrian - Upper Imbrian - Eratosthenian - Copernician In the Lunar geologic timescale, the Upper Imbrian epoch occurred between 3800 million years ...
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Geologic time scale
... to talk in terms of Upper/Late, Lower/Early and Middle parts of periods and ... Break up of Gondwana. 99.6±0.9 * Lower/Early 145.5 ± 4.0 Jurassic ... 0 Middle 175.6 ± 2.0 * Lower/Early 199.6 ± 0.6 Triassic ... 0 Middle 245.0 ± 1.5 Lower/Early 251.0 ± 0.4 * Paleozoic ... 0 Middle 311.7 ± 1.1 Lower/Early 318.1 ± 1.3 * ...
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Lunar geologic timescale
... Period : 3200 MY to 1100 MY Upper Imbrian Epoch : 3800 MY to 3200 MY Lower Imbrian Epoch : 3850 MY to 3800 MY Nectarian ... time scale was developed are basalts of Imbrian age. Samples from before and after this ... Nectarian materials. These deposits are called Pre-Imbrian age materials, which encompasses both time ...
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Geology of the Moon
... erosion due to weather, it has a lower gravity, and is cooled more rapidly than ... up to the end of the Upper Imbrian epoch, about 3,200 million years ago ... craters are formed when an impact excavates lower albedo material from beneath the surface, then ... of about 1200° C, and have a lower viscosity compared to basaltic magmas on the ... 12 returned to Earth with basalts of lower concentrations, which were dubbed "low titanium" ...
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Nectarian
... of Lunar geologic time : Pre-Nectarian - Nectarian - Lower Imbrian - Upper Imbrian - Eratosthenian - Copernician The Nectarian Period of the ... Moon. Hadean eon Cryptic Basin Groups Nectarian Lower Imbrian
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List of astronomical topics
... Dyson, Freeman E E-type asteroid Early Imbrian Earth Earth atmosphere Earth impacts Earth's ... Iapetus (moon) IAU Icy moon Ijiraq (moon) Imbrian Immanuel Kant Impact basin Impact event Inclination ... X-ray binaries Lowell Observatory Lowell, Percival [[ Lower Imbrian Lucky imaging Luminance Luminiferous aether Luminosity Luminosity ... States Naval Observatory Unmanned space mission Upper Imbrian Uppsala Astronomical Observatory Uppsala General Catalogue ...
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Eratosthenian
... of Lunar geologic time : Pre-Nectarian - Nectarian - Lower Imbrian - Upper Imbrian - Eratosthenian - Copernician The Eratosthenian period in the ... Period. The massive basaltic volcanism of the Imbrian period tapered off and ceased during this ...
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Category:Lunar geologic periods
... E Eratosthenian G Lunar geologic timescale L Lower Imbrian N Nectarian P Pre-Nectarian U Upper Imbrian
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Pre-Nectarian
... of Lunar geologic time : Pre-Nectarian - Nectarian - Lower Imbrian - Upper Imbrian - Eratosthenian - Copernician The Pre-Nectarian Period of ...
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