Sample 201
NavDat sample number 88001 · GRANODIORITE
Sample
| Sample ID | 201 |
|---|---|
| Rock name | GRANODIORITE |
| Rock type | PLUTONIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Collected by | Hildreth and others |
| Comment | Non-por phyritic granodioritic to quartz-monzodioritic stock |
Location
| Latitude | 48.835 |
|---|---|
| Longitude | -121.789 |
| Location | Lake Ann |
| State / province | Washington |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 0.969 | 0.94 | 0.998 |
Analyses
No chemical analyses are stored for this sample.
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