Sample 31-Mar
NavDat sample number 11274 · ANDESITE
Sample
| Sample ID | 31-Mar |
|---|---|
| Rock name | ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
Location
| Latitude | 39.3594 |
|---|---|
| Longitude | -120.055 |
| Location | Boca Ridge Formation Lavas |
| State / province | California |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 2.8 | 2.52 | 3.08 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 54.65 | WT% | XRF | |
| TIO2 | 1.18 | WT% | XRF | |
| AL2O3 | 17.65 | WT% | XRF | |
| FEO | 7.04 | WT% | XRF | |
| MNO | 0.135 | WT% | XRF | |
| MGO | 4.89 | WT% | XRF | |
| CAO | 8.03 | WT% | XRF | |
| NA2O | 3.15 | WT% | XRF | |
| K2O | 2.39 | WT% | XRF | |
| P2O5 | 0.54 | WT% | XRF | |
| TOTAL | 99.91 | WT% | XRF | |
| V | 167 | PPM | INAA | |
| CR | 284 | PPM | INAA | |
| NI | 116 | PPM | XRF | |
| RB | 68 | PPM | XRF | |
| SR | 701 | PPM | XRF | |
| Y | 25 | PPM | XRF | |
| ZR | 224 | PPM | XRF | |
| NB | 16 | PPM | XRF | |
| BA | 993 | PPM | XRF | |
| LA | 43 | PPM | INAA | |
| CE | 76 | PPM | INAA | |
| ND | 28 | PPM | INAA | |
| SM | 6 | PPM | INAA | |
| EU | 1.46 | PPM | INAA | |
| DY | 3.33 | PPM | INAA | |
| YB | 1.98 | PPM | INAA | |
| LU | 0.2 | PPM | INAA | |
| U | 1.69 | PPM | INAA | |
| TH | 4.58 | PPM | INAA | |
| TA | 1.33 | PPM | INAA | |
| HF | 5.17 | PPM | INAA |