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Sample USGSDFN-81-2
NavDat sample number 19155 · GRANODIORITE
Sample
| Sample ID | USGSDFN-81-2 |
|---|
| Rock name | GRANODIORITE |
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| Rock type | PLUTONIC |
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| Composition | INTERMEDIATE |
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| Material | IGNEOUS |
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| Collected by | F. Fisher |
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| Comment | fine grained; age of intrusion considered to be 50 Ma; younger ages may reflect some annealing of fission-tracks |
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Location
| Latitude | 44.3833 |
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| Longitude | -110 |
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| Location | 60-m above Crock Mine; Park County |
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| State / province | Wyoming |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 38.9 |
|
32.5 |
45.3 |
|
|
Analyses
No chemical analyses are stored for this sample.
References
- Marvin, Richard F; Mehnert, Harald H; Naeser, Charles W; Zartman,Robert E (1989) U. S. Geological Survey radiometric ages; Compilation C; Part five;Colorado, Montana, Utah, and Wyoming. Isochron/West, vol.53, pp.14-19, Jun 1989
