Ordovician of the Baltic

The interval definitions in this timescale are derived from the following sources:

  • F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
  • 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
  • B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view

There are 10 timescales which overlap this one. show

Interval boundaries marked with * have 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.

Interval names marked with † are no longer in current use.

This timescale is used in the definition of 3260 collections

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International Chronostratigraphic TimescaleOrdovician of the Baltic
OrdovicianLate OrdovicianHirnantianHarjuPorkuni443.1
KatianPirgu445.2
Vormsi449.5
NabalaJohvi †449.9
ViruRakvere450.5
Oandu451.8
SandbianKeilaIdavere †452.8
Haljala453.9
Kukruse456.8
UhakuAluoja †458
Middle OrdovicianDarriwilian458.2
Lasnamagi459.7
Aseri461.4
OelandKunda464.3
Valaste †/Hunderum465.9 *
VolkhovLangevoja †/Vaana/Saka469.1 *
Dapingian469.4
Early OrdovicianFloianBillingen471.3 *
Latorp †472.1 *
Hunneberg475.6 *
Tremadocian477.1
Varangu482.9 *
Pakerort483.8 *
486.4 *
486.85