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Sample USGS-D2404B
NavDat sample number 4963 · TUFF
Sample
| Sample ID | USGS-D2404B |
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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 | A.H. Cogbill, Northwestern Univ. |
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| Comment | The ages obtained for samples 7 and 8 of this paper agree with those of Gilbert and others 1968 from unit 9. However, it appears that the biotite age for this tuff sample is too old. Since the stratigraphic assignment of this sample seems indisputable, the determined age may have been caused by sample contamination, excess argon, or analytical error. Unit 9 is also known, informally, as the tuff of Candelaria Junction. |
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Location
| Latitude | 38.1669 |
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| Longitude | -118.162 |
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| Location | Mineral County |
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| State / province | Nevada |
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| Volcanic field | Mina-Candelaria Region |
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| Location comment | Candelaria Hills |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 24.6 |
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23.7 |
25.5 |
|
R.F. Marvin, H.H. Mehnert, and V.M. Merritt, U.S. Geological Survey |
Analyses
No chemical analyses are stored for this sample.
