Sample H87-157
NavDat sample number 30642 · RHYOLITE
Sample
| Sample ID | H87-157 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
Location
| Latitude | 30.6167 |
|---|---|
| Longitude | -103.733 |
| Location | Davis Mtns |
| State / province | TEXAS |
| Formation | Star Mountain Fm, lower flow |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 37.9 | 34.11 | 41.69 |
Analyses
MINERAL
References
- James, Eric William; Henry, Christopher D (1993) Southeastern extent of the North American Craton in Texas and northern Chihuahua as revealed by Pb isotopes; with Suppl. Data 9310. Geological Society of America Bulletin, vol.105, no.1, pp.116-126, Jan 1993 doi:10.1130/0016-7606(1993)105<0116:SEOTNA>2.3.CO;2