Sample GAD-9
NavDat sample number 12143 · ANDESITE
Sample
| Sample ID | GAD-9 |
|---|---|
| Rock name | ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Comment | Medium gray, sparsely microporphyritic with olivine phenocrysts set in pilotaxitic matrix, dense. |
Location
| Latitude | 40.4483 |
|---|---|
| Longitude | -120.898 |
| State / province | California |
| Volcanic field | Walker Lane |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 3.4 | 3.2 | 3.6 |