Harju epoch
450.6 - 443.8 Ma
The definition of this interval in the timescale Ordovician of the Baltic is taken from the following source:
- F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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 7 timescales which overlap this one. show
This interval is used in the definition of 14 collections
A total of 4612 collections with 31420 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 | |||||||