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Sample 1025
NavDat sample number 55244 · DACITE
Sample
| Sample ID | 1025 |
|---|
| Rock name | DACITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 29.75 |
|---|
| Longitude | -104.5 |
|---|
| Location | Chinati Mts. |
|---|
| State / province | Texas |
|---|
| Country | United States |
|---|
| Location comment | Texas |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 32 |
|
28.8 |
35.2 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 63.7 | | WT% | XRF |
| RB | 277 | | PPM | XRF |
| SR | 456 | | PPM | XRF |
| SR87_SR86 | 0.70538 | | | UNKNOWN |
| SR87_SR86 | 0.70465 | | | UNKNOWN |
References
- Cameron, Kenneth L; Cameron, M (1985) Rare earth element, 87Sr/86Sr, and 143Nd/144Nd compositions of Cenozoic orogenic dacites from Baja California, northwestern Mexico, and adjacent West Texas; evidence for the predominance of a subcrustal component. Contributions to Mineralogy and Petrology, vol.91, no.1, pp.1-11, 1985 doi:10.1007/BF00429422
