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Sample USGSM-856-32
NavDat sample number 2894 · DACITE
Sample
| Sample ID | USGSM-856-32 |
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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 light-reddish-gray dacite with phenocrysts of plagioclase, biotite, and hornblende in a fine-grained groundmass. This sample and sample USGSM-BH32 are from the upper flow unit or dacite of the Silver Hill Volcanic Series. |
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Location
| Latitude | 38.2055 |
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| Longitude | -118.997 |
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| Location | Mono County, CA |
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| State / province | California |
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| Volcanic field | Bodie Mining District and Bodie Hills Volcanic Field |
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| Location comment | old quarry, just N of railroad grade |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 9.1 |
|
8.8 |
9.4 |
|
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Analyses
No chemical analyses are stored for this sample.
