Keila Stage
| Belongs to | Kurna Subseries |
| Type | chronostratigraphy |
| Rank | Stage |
| Original rank | Kegelshe Schicht |
| Scope | regional |
| Status | formal standard |
| Author | Schmidt |
| Year | 1881 |
| Etymon | Keila, town (E) |
| Original locality | Keila quarry |
| Age top (Ma) | 454.2 |
| Age base (Ma) | 456.2 |
| Age (Ma) | Upper Ordovician |
| Age reference | Cooper & Sadler, 2004 |
| Index | DII |
| Alt. index | O3KL |
| Date changed | 2022-11-14 |
Locality | Type | From (m) | To (m) | Reference | Remarks | |
|---|---|---|---|---|---|---|
| Keila quarry | holostratotype | Rõõmusoks, 1967a | ||||
| Pääsküla subsurface tunnels, full profile | boundary stratotype | Hints, O. & Nõlvak, 1999a | ||||
| Keila quarry borehole | hypostratotype | 0.2 | 12.9 | Põlma et al., 1988 |
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