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Sample SQ21
NavDat sample number 6680 · LATITE
Sample
| Sample ID | SQ21 |
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| Rock name | LATITE |
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| Rock type | VOLCANIC |
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| Composition | INTERMEDIATE |
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| Material | IGNEOUS |
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| Collected by | E.C. Bingler |
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| Comment | Sample of hornblende-biotite quartz latite, moderately welded, devitrified, crystal tuff. Both biotite and hornblende are oxidized and partially replaced by fine-grained, opaque, non-titanium oxide and chlorite. These concordant ages agree within analytical uncertainty with a date of 27.2 +/- 1.1 m.y. on biotite reported by Proffett and Proffett 1976 from the type area of the Singatse Tuff. Previously reported ages of 28.5 +/- 1.1 m.y. by Bingler 1972 on biotite and 31.7 +/- 1.8 m.y. by Proffett and Proffett 1976 on hornblende are equal to or greater than most dates from the underlying Mickey Pass Tuff and are almost certainly too old. |
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Location
| Latitude | 38.8533 |
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| Longitude | -118.855 |
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| Location | Mineral County |
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| State / province | Nevada |
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| Volcanic field | Northern Wassuck Range |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 26.3 |
|
25.5 |
27.1 |
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Analyses
No chemical analyses are stored for this sample.
