Sample KT82-15
NavDat sample number 31687 · BASALT
Sample
| Sample ID | KT82-15 |
|---|---|
| Rock name | BASALT |
| Rock type | VOLCANIC |
| Composition | MAFIC |
| Material | IGNEOUS |
| Comment | 60 km³ stratovolcano composed of shoshonite, latite, trachydacite, and trachyte lava. Volcano is cut by a radial dike system. |
Location
| Latitude | 36.1667 |
|---|---|
| Longitude | -114.6 |
| Location | Hamblin-Cleopatra Volcano |
| State / province | Nevada |
| Volcanic field | Lake Mead area |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 12.85 | 11.5 | 14.2 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 56.43 | WT% | ICP | |
| AL2O3 | 16.36 | WT% | ICP | |
| FEO | 6.76 | WT% | ICP | |
| CAO | 6.56 | WT% | ICP | |
| MGO | 3.43 | WT% | ICP | |
| NA2O | 3.98 | WT% | ICP | |
| K2O | 1.31 | WT% | ICP | |
| TIO2 | 2.47 | WT% | ICP | |
| MNO | 0.1 | WT% | ICP | |
| P2O5 | 0.49 | WT% | ICP | |
| CR | 47 | PPM | INAA | |
| CO | 20.65 | PPM | INAA | |
| SC | 14.06 | PPM | INAA | |
| V | 147 | PPM | INAA | |
| HF | 6.76 | PPM | INAA | |
| TH | 10.46 | PPM | INAA | |
| TA | 2.75 | PPM | INAA | |
| LA | 65.23 | PPM | INAA | |
| CE | 114.03 | PPM | INAA | |
| SM | 7.75 | PPM | INAA | |
| EU | 1.89 | PPM | INAA | |
| YB | 1.73 | PPM | INAA | |
| SR | 432.85 | PPM | MS-ID | |
| RB | 45.83 | PPM | MS-ID | |
| ND | 45.08 | PPM | MS-ID | |
| ND143_ND144 | 0.51239 | MS | ||
| SR87_SR86_INITIAL | 0.70442 | MS | ||
| PB206_PB204 | 17.971 | MS | ||
| PB207_PB204 | 15.515 | MS | ||
| PB208_PB204 | 38.344 | 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