Sample 1010
NavDat sample number 12916 · ANDESITE
Sample
| Sample ID | 1010 |
|---|---|
| Rock name | ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
Location
| Latitude | 45.2179 |
|---|---|
| Longitude | -110.23 |
| Location | Independence volcanic suite |
| State / province | Montana |
| Volcanic field | HAB high-magnesium andesite to banakite early phase |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 92 | 90 | 94 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 59.2 | WT% | DCP | |
| TIO2 | 0.61 | WT% | DCP | |
| AL2O3 | 15 | WT% | DCP | |
| FEOT | 5.8 | WT% | DCP | |
| MNO | 0.1 | WT% | DCP | |
| MGO | 6.37 | WT% | DCP | |
| CAO | 6.17 | WT% | DCP | |
| NA2O | 4.07 | WT% | DCP | |
| K2O | 1.9 | WT% | DCP | |
| P2O5 | 0.45 | WT% | DCP | |
| H2O_PLUS | 0.55 | WT% | DCP | |
| H2O_MINUS | 0.32 | WT% | DCP | |
| CO2 | 0.01 | WT% | DCP | |
| TOTAL | 100.9 | WT% | DCP | |
| NI | 62 | PPM | DCP | |
| CR | 319 | PPM | DCP | |
| RB | 62 | PPM | DCP | |
| CS | 0.95 | PPM | DCP | |
| SR | 954 | PPM | DCP | |
| BA | 1350 | PPM | DCP | |
| PB | 11.1 | PPM | DCP | |
| U | 1.22 | PPM | DCP | |
| TH | 3.09 | PPM | DCP | |
| ZR | 105 | PPM | DCP | |
| HF | 2.77 | PPM | DCP | |
| TA | 0.2 | PPM | DCP | |
| LA | 27.4 | PPM | DCP | |
| CE | 55.9 | PPM | DCP | |
| ND | 21.1 | PPM | DCP | |
| SM | 3.89 | PPM | DCP | |
| EU | 1.15 | PPM | DCP | |
| GD | 4.31 | PPM | DCP | |
| DY | 2.17 | PPM | DCP | |
| Y | 12.8 | PPM | DCP | |
| YB | 1.11 | PPM | DCP | |
| RB87_SR86 | 0.172 | MS-ID | ||
| SR87_SR86 | 0.70537 | TIMS | ||
| SM147_ND144 | 0.111 | MS-ID | ||
| ND143_ND144 | 0.51157 | TIMS | ||
| PB206_PB204 | 16.626 | TIMS | ||
| PB207_PB204 | 15.432 | TIMS | ||
| PB208_PB204 | 36.908 | TIMS |
References
- Meen, James K; Eggler, David H (1987) Petrology and geochemistry of the Cretaceous Independence Volcanic Suite, Absaroka Mountains, Montana; clues to the composition of the Archean sub-Montanan mantle; with Suppl. Data 87-10. Geological Society of America Bulletin, vol.98, no.2, pp.238-247, Feb 1987 doi:10.1130/0016-7606(1987)98<238:PAGOTC>2.0.CO;2