Sample YAB 45-124
NavDat sample number 31664 · BASALT
Sample
| Sample ID | YAB 45-124 |
|---|---|
| Rock name | BASALT |
| Rock type | VOLCANIC |
| Composition | MAFIC |
| Material | IGNEOUS |
| Comment | Alkali basalt forms a small cylindrical vent. Amphibole megacrysts are common. |
Location
| Latitude | 36.0769 |
|---|---|
| Longitude | -114.596 |
| Location | Petroglyph Wash |
| State / province | Arizona |
| Volcanic field | Lake Mead area |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 4.3 | 3.87 | 4.73 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 45.5 | WT% | ICP | |
| AL2O3 | 16.89 | WT% | ICP | |
| FEO | 10.04 | WT% | ICP | |
| CAO | 8.53 | WT% | ICP | |
| MGO | 5.94 | WT% | ICP | |
| NA2O | 4.78 | WT% | ICP | |
| K2O | 2.2 | WT% | ICP | |
| TIO2 | 2.52 | WT% | ICP | |
| MNO | 0.19 | WT% | ICP | |
| P2O5 | 0.77 | WT% | ICP | |
| CO | 28 | PPM | INAA | |
| SC | 17.4 | PPM | INAA | |
| V | 192 | PPM | INAA | |
| HF | 6.98 | PPM | INAA | |
| TH | 12.05 | PPM | INAA | |
| TA | 5.68 | PPM | INAA | |
| LA | 85.5 | PPM | INAA | |
| CE | 140.9 | PPM | INAA | |
| SM | 8.9 | PPM | INAA | |
| EU | 2.4 | PPM | INAA | |
| YB | 2.1 | PPM | INAA | |
| LU | 0.4 | PPM | INAA | |
| SR | 820 | PPM | AAS | |
| RB | 64 | PPM | AAS | |
| BA | 880 | PPM | AAS | |
| NI | 70 | PPM | AAS | |
| NB | 84 | PPM | XRF |
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