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Sample I 227
NavDat sample number 8331 · GRANODIORITE
Sample
| Sample ID | I 227 |
|---|
| Rock name | GRANODIORITE |
|---|
| Rock type | PLUTONIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 44.2467 |
|---|
| Longitude | -114.885 |
|---|
| State / province | Idaho |
|---|
| Volcanic field | Idaho batholith, Atlanta Lobe |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 72.5 |
|
65.25 |
79.75 |
|
|
Analyses
Mineral
| Item | Value | Std. dev. | Unit | Method |
|---|
| DELTA_D | -166 | | | MS |
| D18O | 0.8 | | PERMILL | MS |
References
- Criss, R E; Lanphere, M A; Taylor, H P, Jr (1982) Effects of regional uplift, deformation, and meteoric-hydrothermal metamorphism on K-Ar ages of biotites in the southern half of the Idaho Batholith. JGR. Journal of Geophysical Research. B, vol.87, no.8, pp.7029-7046, 10 Aug 1982 doi:10.1029/JB087iB08p07029
