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Sample YU-PZA34a
NavDat sample number 2967 · RHYOLITE
Sample
| Sample ID | YU-PZA34a |
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| Rock name | RHYOLITE |
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| Rock type | VOLCANIC |
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| Composition | FELSIC |
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| Material | IGNEOUS |
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| Collected by | Pansze, Arthur J |
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| Comment | fine-grained, porphyritic; 15% phenocrysts of biotite, sanidine, plagioclase, and quartz in groundmass of alternatingf vitric and felsitic layers |
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Location
| Latitude | 42.9895 |
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| Longitude | -116.815 |
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| Location | from brecciated exogenous dome of fine-grained rhyolite porphyry; Owyhee County |
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| State / province | Idaho |
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| Volcanic field | upper rhyolite unit |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 19.7 |
|
19.4 |
20 |
|
|
Analyses
No chemical analyses are stored for this sample.
