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Sample UE7F-2015
NavDat sample number 84402 · PYROCLASTIC-FALL
Sample
| Sample ID | UE7F-2015 |
|---|
| Rock name | PYROCLASTIC-FALL |
|---|
| Rock type | VOLCANIC |
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| Composition | FELSIC |
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| Material | IGNEOUS |
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| Comment | Sample, described from thin section butt, is pale reddish brown zeolitic poorly sorted nonwelded tuff with common to abundant white pumice, mostly 1 to 3 mm. Felsic phenocrysts are common, lithics to 1 mm are scarce to common, and scarce mafics include pseudomorphic clinopyroxene, biotite observed as a single black grain, and pseudomorphic olivine. |
|---|
Location
| Latitude | 37.0887 |
|---|
| Longitude | -116.049 |
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| State / province | NEVADA |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 14.29 |
|
14.3 |
14.28 |
|
|
Analyses
Whole Rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| BAO | 233.121 | | PPM | XRF |
| BA | 208.8 | | PPM | XRF |
| CE2O3 | 160.464 | | PPM | XRF |
| FE2O3 | 1.64 | | WT% | XRF |
| LA2O3 | 99.0279 | | PPM | XRF |
| NB2O5 | 83.9006 | | PPM | XRF |
| ND2O3 | 66.6569 | | PPM | XRF |
| RB2O | 171.038 | | PPM | XRF |
| SRO | 107.687 | | PPM | XRF |
| Y2O3 | 49.9964 | | PPM | XRF |
| ZNO | 131.691 | | PPM | XRF |
| ZN | 105.8 | | PPM | XRF |
| ZRO2 | 359.448 | | PPM | XRF |
| ZR | 266.1 | | PPM | XRF |
