Stratigraphy
Jamaja Formation
| Belongs to | Baltic lithostratigraphy (Silurian) |
| Type | lithostratigraphy |
| Rank | Formation |
| Scope | regional |
| Status | formal standard |
| Author | Nestor |
| Year | 1987 |
| Etymon | Jämaja (Jamaja) village on Saaremaa Island, Estonia |
| Original locality | Ohesaare core |
| Age (Ma) | lower Silurian |
| Index | J2jm |
| Alt. index | S2jm |
| Date added | 2009-04-21 |
| Date changed | 2025-02-13 |
Locality | Type | From (m) | To (m) | Reference | Remarks | |
|---|---|---|---|---|---|---|
| Ohesaare borehole | holostratotype | 204.9 | 294.1 | Nestor, H., 1987a | Särghaua dep. |
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