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Sample USGSM-BH6
NavDat sample number 2905 · RHYOLITE
Sample
| Sample ID | USGSM-BH6 |
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| Rock name | RHYOLITE |
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| Rock type | PLUTONIC |
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| Composition | FELSIC |
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| Material | IGNEOUS |
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| Comment | Light-gray porphyritic rhyolite with phenocrysts of quartz, biotite, plagioclase and minor sanidine in a glassy, partly devitrified groundmass. Originally mapped as part of Mt. Biedeman Formation due to lithologic similarity to rhyolites included with that formation. This plug is one of two intruding tuff breccias of the Willow Springs Formation and pre-Tertiary rocks Chesterman, 1968. It is part of a series of younger intrusive rhyolites emplaced after the main volcanism of the Bodie Hills. |
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Location
| Latitude | 38.1651 |
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| Longitude | -119.15 |
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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 | at junction of Clearwater Road with Cinnabar Canyon, 8 mi WSW of Bodie townsite |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 5.9 |
|
5.7 |
6.1 |
|
|
Analyses
No chemical analyses are stored for this sample.
