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Sample B-138
NavDat sample number 3809 · RHYOLITE
Sample
| Sample ID | B-138 |
|---|
| Rock name | RHYOLITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
| Comment | Elevation 7840'; white-cored pumice from lowest exposure of partially-welded rimrock |
|---|
Location
| Latitude | 37.8343 |
|---|
| Longitude | -118.737 |
|---|
| State / province | California |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 0.76 |
|
0.759 |
0.761 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 74.24 | | WT% | WET |
| MGO | 0.16 | | WT% | WET |
| CAO | 0.71 | | WT% | WET |
| NA2O | 3.13 | | WT% | WET |
| K2O | 5.07 | | WT% | WET |
| H2O | 1.32 | | WT% | WET |
| H2O_MINUS | 0.24 | | WT% | WET |
