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Sample 78-218
NavDat sample number 31681 · BASALT
Sample
| Sample ID | 78-218 |
|---|
| Rock name | BASALT |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | MAFIC |
|---|
| Material | IGNEOUS |
|---|
| Comment | Andesite-dacite stratovolcano surrounded by a field of dacite domes and a basalt shield. |
|---|
Location
| Latitude | 36.0833 |
|---|
| Longitude | -114.833 |
|---|
| Location | River Mountains |
|---|
| State / province | Nevada |
|---|
| Volcanic field | Lake Mead area |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 12.75 |
|
12.1 |
13.4 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 47.1 | | WT% | ICP |
| AL2O3 | 14.5 | | WT% | ICP |
| FEO | 10.9 | | WT% | ICP |
| CAO | 11.2 | | WT% | ICP |
| MGO | 6.3 | | WT% | ICP |
| NA2O | 2.8 | | WT% | ICP |
| K2O | 1.8 | | WT% | ICP |
| TIO2 | 1.2 | | WT% | ICP |
| MNO | 0.1 | | WT% | ICP |
| P2O5 | 1 | | WT% | ICP |
| SC | 29.6 | | PPM | INAA |
| HF | 8.1 | | PPM | INAA |
| TH | 13.2 | | PPM | INAA |
| TA | 1.5 | | PPM | INAA |
| LA | 107.6 | | PPM | INAA |
| CE | 242.4 | | PPM | INAA |
| SM | 15.5 | | PPM | INAA |
| EU | 3.9 | | PPM | INAA |
| YB | 2.1 | | PPM | INAA |
| LU | 0.4 | | PPM | INAA |
| ND | 98.57 | | PPM | MS-ID |
| ND143_ND144 | 0.51221 | | | MS |
| SR87_SR86_INITIAL | 0.708954 | | | MS |
| PB206_PB204 | 18.299 | | | MS |
| PB207_PB204 | 15.605 | | | MS |
| PB208_PB204 | 38.699 | | | MS |
