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Sample UE7F-1979.2
NavDat sample number 84400 · PYROCLASTIC-FALL
Sample
| Sample ID | UE7F-1979.2 |
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| Rock name | PYROCLASTIC-FALL |
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| Rock type | VOLCANIC |
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| Composition | FELSIC |
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| Material | IGNEOUS |
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| Comment | Sample is moderate pink dry and light red wet zeolitic nonwelded tuff, 3 m above base of 30-m thick ash flow, just below transition to partially welded above. Lithics and phenocrysts of feldspar and quartz are common, and biotite is scarce to common. From thin section butt, abundant pumices to 6 mm are white to grayish pink, some with pale red haloes; a 3 mm pale yellowish brown pumice occurs near corner of butt. |
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Location
| Latitude | 37.0887 |
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| Longitude | -116.049 |
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| State / province | NEVADA |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 14.27 |
|
14.28 |
14.26 |
|
|
Analyses
Whole Rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| BAO | 717.338 | | PPM | XRF |
| BA | 642.5 | | PPM | XRF |
| CE2O3 | 161.167 | | PPM | XRF |
| FE2O3 | 1.48 | | WT% | XRF |
| LA2O3 | 92.8357 | | PPM | XRF |
| NB2O5 | 58.3227 | | PPM | XRF |
| ND2O3 | 59.8571 | | PPM | XRF |
| RB2O | 192.581 | | PPM | XRF |
| SRO | 189.451 | | PPM | XRF |
| Y2O3 | 48.3836 | | PPM | XRF |
| ZNO | 92.9557 | | PPM | XRF |
| ZN | 74.68 | | PPM | XRF |
| ZRO2 | 384.032 | | PPM | XRF |
| ZR | 284.3 | | PPM | XRF |
