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Sample USGSD-627-1
NavDat sample number 7975 · TRACHYANDESITE
Sample
| Sample ID | USGSD-627-1 |
|---|
| Rock name | TRACHYANDESITE |
|---|
| Rock type | VOLCANIC |
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| Composition | INTERMEDIATE |
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| Material | IGNEOUS |
|---|
| Comment | plagioclase, quenched augite-pigeonite, skeletal olivine, biotite, opaques, and possibly some glass |
|---|
Location
| Latitude | 45.6056 |
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| Longitude | -112.817 |
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| Location | overlies an ash bed; Beaverhead County |
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| State / province | Montana |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 46.1 |
|
44.5 |
47.7 |
|
|
Analyses
No chemical analyses are stored for this sample.
