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Sample PM-19
NavDat sample number 31325 · DACITE
Sample
| Sample ID | PM-19 |
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| Rock name | DACITE |
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| Rock type | VOLCANIC |
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| Composition | FELSIC |
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| Material | IGNEOUS |
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| Comment | Porphyritic/glomeroporphyritic dacite with large plagioclase, augite, and hypersthene grains in a hyalopilitic groundmass composed mostly of brown glass and minor amounts of plagioclase laths and Fe-Ti oxdies. |
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Location
| Latitude | 44.3409 |
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| Longitude | -120.534 |
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| State / province | Oregon |
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| Formation | Clarno Formation |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 45.6 |
|
37.4 |
53.8 |
|
|
