Trempealeauan age

489.2 - 485.4 Ma

The definition of this interval in the timescale Cambrian of Britain is taken from the following source:

  • W. B. Harland, R. L. Armstrong, A. V. Cox, L. E. Craig, A. G. Smith and D. G. Smith. 1990. A Geologic Time Scale 1989. view

The bottom age has been interpolated based on the differences between the ages for international timescale boundaries quoted in the source and the currently accepted ages for those boundaries.

There are intervals in 9 timescales which overlap this one. show

This interval is used in the definition of 234 collections

A total of 452 collections with 2252 occurrences lie within this time span

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International Chronostratigraphic TimescaleCambrian of Britain
CambrianFurongianStage 10MerionethDolgellian/Trempealeauan485.4
Festiniogian489.2 *
Maentwrogian493.1 *
MiaolingianGuzhangianSt Davids497
Series 2Stage 4Caerfai509
Stage 3514
TerreneuvianStage 2521