Sample DS87-019
NavDat sample number 45902 · ANDESITE
Sample
| Sample ID | DS87-019 |
|---|---|
| Rock name | ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
Location
| Latitude | 37.882 |
|---|---|
| Longitude | -106.958 |
| Location | NW of Bulldog Mountain |
| State / province | COLORADO |
| Formation | Rat Creek or late flow of SR cycle? Caldera Cycle, andesite of Bristol Head |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 31.5 | 28 | 35 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| ZN | 86 | PPM | XRF | |
| RB | 79 | PPM | XRF | |
| SR | 973 | PPM | XRF | |
| Y | 23 | PPM | XRF | |
| ZR | 273 | PPM | XRF | |
| NB | 18 | PPM | XRF | |
| PB | 23 | PPM | XRF | |
| TH | 8 | PPM | XRF | |
| BA | 1544 | PPM | XRF | |
| LA | 54 | PPM | XRF | |
| CE | 101 | PPM | XRF | |
| ND | 47 | PPM | XRF | |
| CS | 1.62 | PPM | INAA | |
| RB | 75.1 | PPM | INAA | |
| BA | 1590 | PPM | INAA | |
| SR | 1030 | PPM | INAA | |
| TH | 4.6 | PPM | INAA | |
| U | 1.7 | PPM | INAA | |
| LA | 53 | PPM | INAA | |
| CE | 109 | PPM | INAA | |
| ND | 52.4 | PPM | INAA | |
| SM | 9.75 | PPM | INAA | |
| EU | 2.26 | PPM | INAA | |
| GD | 7.31 | PPM | INAA | |
| TB | 0.898 | PPM | INAA | |
| HO | 0.89 | PPM | INAA | |
| TM | 0.299 | PPM | INAA | |
| YB | 1.85 | PPM | INAA | |
| LU | 0.275 | PPM | INAA | |
| TA | 0.8 | PPM | INAA | |
| ZR | 254 | PPM | INAA | |
| HF | 6.01 | PPM | INAA | |
| SB | 0.074 | PPM | INAA | |
| SC | 13.1 | PPM | INAA | |
| CR | 35.2 | PPM | INAA | |
| CO | 21.8 | PPM | INAA | |
| NI | 17 | PPM | INAA | |
| ZN | 103 | PPM | INAA |