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Sample KW-2-72
NavDat sample number 4102 · BASALT
Sample
| Sample ID | KW-2-72 |
|---|
| Rock name | BASALT |
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| Rock type | VOLCANIC |
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| Composition | MAFIC |
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| Material | IGNEOUS |
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| Collected by | K.L. Wier |
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| Comment | grayish-black; small pyroxene and olivine phenocrysts; finer-grained groundmass mainly of plagioclase and pyroxene and iron oxide; same flow as KW-3-72 |
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Location
| Latitude | 45.0628 |
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| Longitude | -112.256 |
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| Location | Madison County |
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| State / province | Montana |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 4.2 |
|
4 |
4.4 |
|
|
Analyses
No chemical analyses are stored for this sample.
