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Professional Paper 1386–A

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Chapter A–2 (Figure 28)

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Figure 28.—Geologic time scale from the beginning of the Hadean Eon (4+ Ga) to the present, showing subdivisions into eons, eras, periods, and epochs. Age of start and ending of each interval is modified from Orndorff and others (2007).

Figure 28. Geologic time scale from the beginning of the Hadean Eon (4+ Ga) to the present, showing subdivisions into eons, eras, periods, and epochs. Age of start and ending of each interval is modified from Orndorff and others (2007).


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