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Sample 9
NavDat sample number 4651 · DACITE
Sample
| Sample ID | 9 |
|---|
| 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 | phenocrysts of plagioclase, hornblende, and biotite in cryptofelsite groundmass traversed by abundant microliths of oligoclase |
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Location
| Latitude | 39.1907 |
|---|
| Longitude | -121.821 |
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| Location | dacite fragments close to base of middle member of Rampart formation; valley due S of South Butte |
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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 |
|---|
| 1.66 |
|
1.494 |
1.826 |
|
|
Analyses
No chemical analyses are stored for this sample.
