timescales: Geological time scale from Harland et al., (2012)

Description Usage Format Source


This dataset provides the geological ages for the entire geological timescale from Gradstein (2012) along with the RGB colour values used in the current version.




A matrix of first and last datums along with RBG values for each geological time period.


Gradstein, F. M., Ogg, J. M., and Schmitz, M., 2012, A geologic time scale, Boston, USA, Elsevier.

geoscale documentation built on May 19, 2017, noon

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