Sample B-109
NavDat sample number 3807 · TUFF
Sample
| Sample ID | B-109 |
|---|---|
| Rock name | TUFF |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | Elevation 4450'; prominent ledge in mid-slope. Poorly welded upper portion of lower cooling unit, rich in pumice. Colluvium mantels thick non-welded base. |
Location
| Latitude | 37.4509 |
|---|---|
| Longitude | -118.399 |
| 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 |
|---|---|---|---|---|
| CAO | 0.59 | WT% | WET | |
| NA2O | 3.77 | WT% | WET | |
| K2O | 4.74 | WT% | WET | |
| H2O | 2.22 | WT% | WET | |
| TOTAL | 98.35 | WT% | WET | |
| AL2O3 | 11.64 | WT% | INAA | |
| FEO | 0.56 | WT% | INAA | |
| MNO | 0.03 | WT% | INAA | |
| SIO2 | 74.42 | WT% | XRF | |
| TIO2 | 0.07 | WT% | XRF | |
| MGO | 0.07 | WT% | XRF | |
| H2O_MINUS | 0.24 | WT% | WET | |
| LA | 19.5 | PPM | INAA | |
| CE | 45.6 | PPM | INAA | |
| ND | 18.4 | PPM | INAA | |
| SM | 3.58 | PPM | INAA | |
| EU | 0.046 | PPM | INAA | |
| TB | 0.57 | PPM | INAA | |
| DY | 3.7 | PPM | INAA | |
| YB | 2.63 | PPM | INAA | |
| LU | 0.33 | PPM | INAA | |
| RB | 181 | PPM | INAA | |
| CS | 5.6 | PPM | INAA | |
| BA | 10 | PPM | INAA | |
| TH | 20.49 | PPM | INAA | |
| U | 6.6 | PPM | INAA | |
| SC | 2.99 | PPM | INAA | |
| HF | 3.72 | PPM | INAA | |
| TA | 2.09 | PPM | INAA | |
| CR | 2.5 | PPM | INAA | |
| CO | 0.43 | PPM | INAA | |
| ZN | 0.23 | PPM | INAA | |
| MN | 254 | PPM | INAA | |
| W | 3.3 | PPM | INAA | |
| SB | 1.3 | PPM | INAA |