Sample 14-May
NavDat sample number 31680 · BASALT
Sample
| Sample ID | 14-May |
|---|---|
| Rock name | BASALT |
| Rock type | VOLCANIC |
| Composition | MAFIC |
| Material | IGNEOUS |
| Comment | Flows, dikes, and plugs of olivine-phyric alkali basalt that locally contain mantle xenoliths. |
Location
| Latitude | 36.25 |
|---|---|
| Longitude | -113.833 |
| Location | Grand Wash Trough |
| State / province | Arizona |
| Volcanic field | Lake Mead area |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 5.45 | 3.99 | 6.9 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 48.81 | WT% | ICP | |
| AL2O3 | 14.95 | WT% | ICP | |
| FEO | 11.73 | WT% | ICP | |
| CAO | 8.64 | WT% | ICP | |
| MGO | 7.14 | WT% | ICP | |
| NA2O | 3.22 | WT% | ICP | |
| K2O | 1.57 | WT% | ICP | |
| TIO2 | 1.54 | WT% | ICP | |
| MNO | 0.16 | WT% | ICP | |
| P2O5 | 0.43 | WT% | ICP | |
| CR | 256 | PPM | INAA | |
| CO | 39.52 | PPM | INAA | |
| SC | 23.91 | PPM | INAA | |
| V | 215 | PPM | INAA | |
| HF | 3.24 | PPM | INAA | |
| TH | 2.78 | PPM | INAA | |
| LA | 19.21 | PPM | INAA | |
| CE | 44.26 | PPM | INAA | |
| EU | 1.33 | PPM | INAA | |
| YB | 2.28 | PPM | INAA | |
| LU | 0.24 | PPM | INAA | |
| SR | 378.36 | PPM | MS-ID | |
| RB | 8.06 | PPM | MS-ID | |
| ND | 17.89 | PPM | MS-ID | |
| ND143_ND144 | 0.512716 | MS | ||
| SR87_SR86_INITIAL | 0.7044 | MS | ||
| PB206_PB204 | 18.127 | MS | ||
| PB207_PB204 | 15.509 | MS | ||
| PB208_PB204 | 37.895 | MS |
References
- Feuerbach, Dan L; Smith, Eugene I; Walker, J D; Tangeman, J A (1993) The role of the mantle during crustal extension; constraints from geochemistry of volcanic rocks in the Lake Mead area, Nevada and Arizona. Geological Society of America Bulletin, vol.105, no.12, pp.1561-1575, Dec 1993 doi:10.1130/0016-7606(1993)105<1561:TROTMD>2.3.CO;2