Sample AC2
NavDat sample number 54534 · TUFF
Sample
| Sample ID | AC2 |
|---|---|
| Rock name | TUFF |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | Alpine Co., California, lower phase. 60m SW of Elephant Rock. (NW 1/4, NW 1/4, SW 114, Sec. 23,T7NRl9E). low mound of poorly outcropping densely welded devitrified tuff with Small-scale columnar jointing. |
Location
| Latitude | 39.903 |
|---|---|
| Longitude | -119.993 |
| State / province | California |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 31.1 | 29.2 | 33 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 75.7 | WT% | XRF | |
| TIO2 | 0.17 | WT% | XRF | |
| AL2O3 | 13.55 | WT% | XRF | |
| FEO | 1.15 | WT% | XRF | |
| MNO | 0.03 | WT% | XRF | |
| MGO | -0.4 | WT% | XRF | |
| CAO | 0.34 | WT% | XRF | |
| NA2O | 4.28 | WT% | XRF | |
| K2O | 5.02 | WT% | XRF | |
| P2O5 | -0.07 | WT% | XRF | |
| ZN | 44 | PPM | XRF | |
| GA | 23 | PPM | XRF | |
| RB | 218 | PPM | XRF | |
| SR | 13 | PPM | XRF | |
| Y | 28 | PPM | XRF | |
| ZR | 379 | PPM | XRF | |
| NB | 32 | PPM | XRF | |
| CS | -5 | PPM | XRF | |
| BA | 101 | PPM | XRF | |
| PB | 29 | PPM | XRF | |
| TH | 30 | PPM | XRF | |
| LA | 32 | PPM | XRF | |
| CE | 66 | PPM | XRF | |
| PR | -8 | PPM | XRF | |
| ND | 26 | PPM | XRF | |
| SM | -8 | PPM | XRF |