lower Silurian
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Stratigraphy | Index | Index add'l | Type | Rank | Scope | Belongs to | Age (Ma) | Age | |||
---|---|---|---|---|---|---|---|---|---|---|---|
Base | Top | ||||||||||
Jamaja Formation | J2 | S2jm | lithostratigraphy | Formation | regional | Baltic lithostratigraphy (Silurian) | lower Silurian | ||||
Rīga Formation | J1R | S2rg | lithostratigraphy | Formation | regional | Baltic lithostratigraphy (Silurian) | lower Silurian | ||||
Riksu Formation | lithostratigraphy | Formation | regional | Baltic lithostratigraphy (Silurian) | lower Silurian | ||||||
Tõstamaa Group | lithostratigraphy | Group | regional | Baltic lithostratigraphy (Silurian) | lower Silurian |
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