← Search
Sample LC81-659
NavDat sample number 19957 · RHYOLITE
Sample
| Sample ID | LC81-659 |
|---|
| Rock name | RHYOLITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 40.5244 |
|---|
| Longitude | -121.476 |
|---|
| Location | Lassen phase, Rockland sequence |
|---|
| State / province | California |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 0.4 |
|
0.36 |
0.44 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 73.49 | | WT% | XRF |
| AL2O3 | 13.91 | | WT% | XRF |
| FE2O3 | 0.43 | | WT% | XRF |
| FEO | 1.56 | | WT% | XRF |
| MGO | 0.87 | | WT% | XRF |
| CAO | 1.96 | | WT% | XRF |
| NA2O | 3.98 | | WT% | XRF |
| K2O | 3.35 | | WT% | XRF |
| TIO2 | 0.28 | | WT% | XRF |
| P2O5 | 0.08 | | WT% | XRF |
| MNO | 0.05 | | WT% | XRF |
| RB | 88 | | PPM | XRF |
| SR | 220 | | PPM | XRF |
| BA | 849 | | PPM | XRF |
| Y | 15 | | PPM | XRF |
| ZR | 135 | | PPM | XRF |
| NB | 8 | | PPM | XRF |
| PB | 14.8 | | PPM | XRF |
| SR87_SR86 | 0.70402 | | | MS |
| PB206_PB204 | 18.946 | | | MS |
| PB207_PB204 | 15.604 | | | MS |
| PB208_PB204 | 38.591 | | | MS |
| ND143_ND144 | 0.512819 | | | MS |
| TOTAL | 99.87 | | WT% | XRF |
References
- Muffler, L J Patrick (prefacer) (1990) Stratigraphic, lithologic, and major element geochemical constraintson magmatic evolution at Lassen volcanic center, California. Journal of Geophysical Research, vol.95, no.B12, pp.19,651-19,669, 10Nov 1990
