Ärina Formation
Belongs to | Baltic lithostratigraphy (Ordovician) |
Type | lithostratigraphy |
Rank | Formation |
Scope | regional |
Status | formal standard |
Author | Grigelis |
Year | 1978 |
Etymon | Ärina, place in central Estonia |
Age (Ma) | Porkuni Stage |
Index | FIIÄ |
Alt. index | O3är |
Date changed | 2022-06-10 |
Locality | Type | From (m) | To (m) | Reference | Remarks | |
---|---|---|---|---|---|---|
Ärina | holostratotype | Männil, Ralf & Rõõmusoks, 1984 | outcrop [boulders?], Estonia |
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