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Sample TFR2-1
NavDat sample number 7146 · TUFF
Sample
| Sample ID | TFR2-1 |
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| Rock name | TUFF |
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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 | H.F. Bonham, Nevada Bureau of Mines and Geology, and R.P. Ashley and M.L. Silberman, U.S. Geological Survey. |
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| Comment | Tonopah Summit Member, Fraction Tuff. The Tonopah Summit Member of the Fraction Tuff is hydrothermally altered in virtually all exposures in the Tonopah area. The K-Ar ages on this unit may reflect heating by younger rhyolite intrusions. The Tonopah Summit Member is believed to be between 18 and 19 m.y. old, based on stratigraphic relations and radiometric dating of overlying and underlying units Bonham and Garside, 1979, p.55 |
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Location
| Latitude | 37.9594 |
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| Longitude | -117.247 |
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| Location | Esmeralda Co., NV |
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| State / province | Nevada |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 16.5 |
|
16 |
17 |
|
M.L. Silberman and E.H. McKee, U.S. Geological Survey. |
Analyses
No chemical analyses are stored for this sample.
