Sample 500
NavDat sample number 88004 · ANDESITE
Sample
| Sample ID | 500 |
|---|---|
| Rock name | ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Collected by | Hildreth and others |
| Comment | Extracaldera andesite-dacite dikes |
Location
| Latitude | 48.8237 |
|---|---|
| Longitude | -121.839 |
| Location | Chowder Ridge |
| State / province | Washington |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 1.155 | 1.025 | 1.285 |
Analyses
Whole rock
References
- Hildreth, Wes; Lanphere, Marvin A; Champion, Duane E; Fierstein, Judy (2004) Rhyodacites of Kulshan Caldera, north Cascades of Washington;post-caldera lavas that span the Jaramillo. Journal of Volcanology and Geothermal Research, vol.130, no.3-4,pp.227-264, 29 Feb 2004 doi:10.1016/S0377-0273(03)00290-7