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Sample BH-1
NavDat sample number 54391 · VITROPHERE
Sample
| Sample ID | BH-1 |
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| Rock name | VITROPHERE |
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| Rock type | VOLCANIC |
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| Composition | FELSIC |
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| Material | IGNEOUS |
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| Comment | Beacon Hill, Norden, California [SE1/4, NW1/4, SE1/4, SE1/4, Sec. 17, T17N, R15E], southeast side of hill. Upper and lwer phases of the Nine Hill Tuff. Partially welded, pumiceaous basal vitrophyre. Tuff is 25 m thick. Lithophysal zone about 7 m above vitrophyre; overlain by congomerate and about 20 m of quartz-biotite vitric unwelded buff tuff. |
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Location
| Latitude | 39.3215 |
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| Longitude | -120.332 |
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| State / province | California |
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| Location comment | Nine Hill |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 23.3 |
|
22.7 |
23.9 |
|
|
