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Sample USGSD-B-64
NavDat sample number 6242 · TUFF
Sample
| Sample ID | USGSD-B-64 |
|---|
| 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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| Comment | rhyolitic ash-flow tuff with quartz and sanidine phenocrysts, interbedded with rhyodacite flows; age appears too young if recently mapped stratigraphic relationships are correct |
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Location
| Latitude | 44.4983 |
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| Longitude | -114.277 |
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| Location | N slope of John Gulch; Custer County |
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| State / province | Idaho |
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| Volcanic field | Challis Volcanics |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 42.8 |
|
41.8 |
43.8 |
|
|
Analyses
No chemical analyses are stored for this sample.
