Civilization Timescale (per Don)Don created this chart using internet resources; it keeps things in perspective, especially regarding the competition between civilizations for mineral resources.
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Official Geologic Timescale The official Geologic Timescale can be obtained from the web addresses below:
http://www.stratigraphy.org/ICSchart/ChronostratChart2017-02.pdf https://www.geosociety.org/documents/gsa/timescale/timescl.pdf |
Simplified Geologic TimescaleFrom Encyclopedia Britannia
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Quickview Geologic TimescaleCreated quick view timescale
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