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Sample USGSM-11549-1
NavDat sample number 3064 · PYROCLASTIC-FLOW
Sample
| Sample ID | USGSM-11549-1 |
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| Rock name | PYROCLASTIC-FLOW |
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| Rock type | VOLCANIC |
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| Composition | FELSIC |
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| Material | IGNEOUS |
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| Collected by | F.J. Kleinhampl, U.S. Geological Survey |
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| Comment | The fraction breccia is the oldest postore unit in the Tonopah district. The age of 17 m.y. places an upper limit and the previous one sample no. 83 places a lower limit of 20.4 m.y. on the time of mineralization. Age of mineralization at Tonopah has been estimated as 19.1 m.y. based on a single date on adularia from one of the veins Bonham and others, 1972, this issue. |
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Location
| Latitude | 38.0606 |
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| Longitude | -117.227 |
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| Location | San Antonio Mountains |
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| State / province | Nevada |
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| Formation | Fraction breccia |
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| Location comment | at Heller Butte; Nye County, NV |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 17.3 |
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17 |
17.6 |
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Analyses
No chemical analyses are stored for this sample.
