Sample 218
NavDat sample number 8627 · PYROCLASTIC FALL
Sample
| Sample ID | 218 |
|---|---|
| Rock name | PYROCLASTIC FALL |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | Porphyritic |
Location
| Latitude | 20.6861 |
|---|---|
| Longitude | -103.553 |
| Location | Cliff on south side of A. Arena Grande |
| State / province | Jalisco |
| Location comment | Tala Tuff |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 0.1 | 0.085 | 0.105 |
Analyses
Mineral
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 74.33 | WT% | WET | |
| SIO2 | 66.6 | WT% | EPMA | |
| TIO2 | 0.13 | WT% | WET | |
| AL2O3 | 11.29 | WT% | WET | |
| AL2O3 | 19.3 | WT% | EPMA | |
| FE2O3 | 1.59 | WT% | WET | |
| FE2O3 | 0.21 | WT% | EPMA | |
| FEO | 0.23 | WT% | WET | |
| MNO | 0.05 | WT% | WET | |
| MGO | 0.05 | WT% | WET | |
| CAO | 0.25 | WT% | WET | |
| CAO | 0.14 | WT% | EPMA | |
| NA2O | 3.74 | WT% | FPHOT | |
| NA2O | 6.68 | WT% | EPMA | |
| K2O | 4.64 | WT% | FPHOT | |
| K2O | 7.21 | WT% | EPMA | |
| H2O_PLUS | 3.85 | WT% | PENFIELD | |
| F | 0.09 | WT% | SIE | |
| CL | 0.11 | WT% | SIE | |
| TOTAL | 100.29 | WT% | WET | |
| TOTAL | 100.1 | WT% | EPMA | |
| SC | 0.92 | PPM | INAA | |
| CO | 0.7 | PPM | INAA | |
| ZN | 110 | PPM | XRF | |
| RB | 165 | PPM | XRF | |
| Y | 52 | PPM | XRF | |
| ZR | 482 | PPM | XRF | |
| NB | 67 | PPM | XRF | |
| SB | 0.4 | PPM | INAA | |
| CS | 4.1 | PPM | INAA | |
| LA | 64 | PPM | INAA | |
| CE | 136 | PPM | INAA | |
| ND | 54 | PPM | INAA | |
| SM | 11.5 | PPM | INAA | |
| EU | 0.06 | PPM | INAA | |
| GD | 9.3 | PPM | INAA | |
| TB | 1.57 | PPM | INAA | |
| TM | 0.8 | PPM | INAA | |
| YB | 6 | PPM | INAA | |
| LU | 0.87 | PPM | INAA | |
| HF | 12.7 | PPM | INAA | |
| TA | 3.73 | PPM | INAA | |
| PB | 19 | PPM | XRF | |
| TH | 18.2 | PPM | INAA | |
| U | 6 | PPM | INAA | |
| RB87_SR86 | 327.5 | TIMS | ||
| SR87_SR86 | 0.70458 | TIMS | ||
| ND143_ND144 | 0.512899 | TIMS | ||
| E_ND | 5.1 | TIMS |