Johvi age
453 - 450 Ma
The definition of this interval in the timescale Ordovician of the Baltic 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 top 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 7 timescales which overlap this one. show
This interval is no longer in current use
This interval is used in the definition of 127 collections
A total of 1849 collections with 14106 occurrences lie within this time span
| International Chronostratigraphic Timescale | Ordovician of the Baltic | ||||||
|---|---|---|---|---|---|---|---|
| Ordovician | Late Ordovician | Hirnantian | Harju | Porkuni | 443.8 | ||
| Katian | Pirgu | 445.2 | |||||
| Vormsi | 449.6 * | ||||||
| Nabala | Johvi † | 450 * | |||||
| Viru | Rakvere | 450.6 * | |||||
| Oandu | 452 * | ||||||
| Sandbian | Keila | Idavere † | 453 | ||||
| Haljala | 453.9 | ||||||
| Kukruse | 456.4 * | ||||||
| Uhaku | Aluoja † | 457.5 * | |||||
| Middle Ordovician | Darriwilian | 458.4 | |||||
| Lasnamagi | 458.9 * | ||||||
| Aseri | 460.4 * | ||||||
| Oeland | Kunda | 462.9 * | |||||
| Valaste †/Hunderum | 464.3 * | ||||||
| Volkhov | Langevoja †/Vaana/Saka | 467.1 * | |||||
| Dapingian | 467.3 | ||||||
| Billingen | 469.3 * | ||||||
| Early Ordovician | Floian | 470 | |||||
| Latorp † | 470.1 * | ||||||
| Hunneberg | 473.7 * | ||||||
| Tremadocian | 477.7 | ||||||
| Varangu | 481.3 * | ||||||
| Pakerort | 482.2 * | ||||||
| 485.4 * | |||||||
| 486.3 | |||||||
| 486.5 | |||||||