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Sample 4
NavDat sample number 4646 · RHYOLITE
Sample
| Sample ID | 4 |
|---|
| 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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| Comment | strongly banded; phenocrysts of biotite, quartz, oligoclase, and sanidine; matrix of microgranular and micrographic intergrowths of quartz and kaolinized feldspar traversed by sanidine and/or oligoclase microliths |
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Location
| Latitude | 39.2079 |
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| Longitude | -121.788 |
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| Location | rhyolite dome on E margin of andesitic core |
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| State / province | California |
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| Volcanic field | Sutter Buttes |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 1.89 |
|
1.701 |
2.079 |
|
|
Analyses
No chemical analyses are stored for this sample.
