Table T1. Lithologic description of sediments and rocks, including major and minor modifiers.
| Sediment class | Major modifiers | Principal names | Minor modifiers |
|---|---|---|---|
| Pelagic sediment | 1. Composition of pelagic grains present in major amounts | 1. Ooze | 1. Composition of pelagic and neritic grains present inminor amounts |
| 2. Texture of clastic grains present in majoramounts | 2. Chalk | 2.
Texture of clastic grains present in minor amounts |
|
| 3. Pelagic limestone | |||
| 4. Radiolarite | |||
| 5. Diatomite | |||
| 6. Spicule | |||
| 7. Porcellanite | |||
| 8. Chert | |||
| Siliciclastic sediment | 1. Composition of all grains present in majoramounts | 1. Gravel | 1. Composition of all grains present in minor amounts |
| 2. Grain fabric (gravels only) | 2. Sand | 2. Texture and composition of siliciclastic grains presentas matrix (for coarse-grained clastic sediments) | |
| 3. Grain shape (optional) | 3. Silt | ||
| 4. Sediment color (optional) | 4. Clay, etc. | ||
| Volcaniclastic sediment | 1. Composition of all volcaniclasts present in major amounts | 1. Breccia | 1. Composition of all volcaniclastics present in minoramounts |
| 2. Composition of all pelagic and neritic grains | 2. Lapilli | 2. Composition of all neritic and pelagic grains present inminor amounts | |
| 3. Texture of siliciclastic grains present in majoramounts | 3. Ash/tuff | 3. Texture of siliciclastic grains present in minor amounts | |
| 4. Volcanic, etc. |