Thursday 27 December 2012

System v Period

There seems to be a confusing mixing of chronologies with Carboniferous being both a Period and System. According to Wikipedia the TIME (geochronology) divisions are as follows:

Eon, era, period, epoch, age

The ROCK (chronostratigraphy) divisions which correspond to them are:

Eonthem, erathem, system, series, stage

Confusing....

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