Ärina Formation
General info
| 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 |
Stratotypes
| Locality | Type | From (m)1 | To (m)2 | Reference | Remarks |
|---|---|---|---|---|---|
| Ärina |
holostratotype
| Männil, Ralf & Rõõmusoks, 1984 | outcrop [boulders?], Estonia |
| Reference | Content | Year1 | Pages | Remarks |
|---|---|---|---|---|
| Hints, L. et al., 1993a |
1993
| |||
| Grigelis, 1978 (ed) |
1978
| |||
| Männil, Ralf & Rõõmusoks, 1984 |
1984
| |||
| Rõõmusoks, 1983 |
1983
| |||
| Rõõmusoks, 1991a |
1991
|
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