Nectarian

Nectarian
Nectarian
Chronology
−4500 — – −4000 — – −3500 — – −3000 — – −2500 — – −2000 — – −1500 — – −1000 — – −500 — – 0 —	Pre-Nectarian Nectarian Imbrian Eratosthenian Copernican Late Early
	Periods on the Lunar Geologic Timescale. Axis scale: Millions of years ago.;
Usage information
Celestial body	Earth's Moon
Time scale(s) used	Lunar geologic timescale
Definition
Chronological unit	Period

The Nectarian Period of the lunar geologic timescale was from 3.920 billion years ago to 3.850 billion years ago. It is the period during which the Nectaris Basin and other major basins were formed by large impact events. Ejecta from Nectaris form the upper part of the densely cratered terrain found in lunar highlands. The period ended with the formation of the Imbrium basin, which initiated the Imbrian Period.^[1] Magnetic anomalies found in some Nectarian Period basins suggest that the Moon possessed a core dynamo magnetic field at that time.^[2]

Millions of years before present

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[Liu_Guo_2018-1] Cite error: The named reference Liu_Guo_2018 was invoked but never defined (see the help page).

[Hood_2011-2] Cite error: The named reference Hood_2011 was invoked but never defined (see the help page).

[1]

[2]

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Nectarian

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