Sample GAD-10
NavDat sample number 12149 · ANDESITE
Sample
| Sample ID | GAD-10 |
|---|---|
| Rock name | ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Comment | Dark gray, abundantly glomeroporphyritic and seriate on plagioclase phenocrysts with sparse clinopyroxene microphenocrysts set I intersertal matrix |
Location
| Latitude | 40.445 |
|---|---|
| Longitude | -120.357 |
| State / province | California |
| Volcanic field | Walker Lane |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 10.9 | 10.5 | 11.3 |