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Sample IG-38
NavDat sample number 7261 · GRANITE
Sample
| Sample ID | IG-38 |
|---|
| Rock name | GRANITE |
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| Rock type | PLUTONIC |
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| Composition | FELSIC |
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| Material | IGNEOUS |
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| Comment | granite contains feldspar megacrysts; date from regression which includes a monazite date |
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Location
| Latitude | 46.4928 |
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| Longitude | -114.368 |
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| Location | Bitterroot Mountains |
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| State / province | Montana |
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| Volcanic field | Idaho Batholith, Bitterroot Lobe/Dome |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 46.5 |
|
45.5 |
47.5 |
|
|
Analyses
No chemical analyses are stored for this sample.
References
- Bickford, M E; Chase, R B; Nelson, B K; Shuster, R D; Arruda, E C (1981) U-Pb studies of zircon cores and overgrowths, and monazite;implications for age and petrogenesis of the northeastern IdahoBatholith. Journal of Geology, vol.89, no.4, pp.433-457, Jul 1981 doi:10.1086/628607
