Is radiometric dating reliable yahoo

However, this force also increases drag substantially.

The primary defined divisions of time are eons, in sequence the Hadean, the Archean, the Proterozoic and the Phanerozoic.

Therefore, the second timeline shows an expanded view of the most recent eon.

In a similar way, the most recent era is expanded in the third timeline, and the most recent period is expanded in the fourth timeline.

Corresponding to eons, eras, periods, epochs and ages, the terms "eonothem", "erathem", "system", "series", "stage" are used to refer to the layers of rock that belong to these stretches of geologic time in Earth's history.

Geologists qualify these units as "early", "mid", and "late" when referring to time, and "lower", "middle", and "upper" when referring to the corresponding rocks.

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