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Sample O 38
NavDat sample number 39054 · DACITE
Sample
| Sample ID | O 38 |
|---|
| Rock name | DACITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
| Comment | Post caldera andesitic, dacitic, or rhyolitic lavas |
|---|
Location
| Latitude | 28.228 |
|---|
| Longitude | -108.047 |
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| Location | Tomochic volcanic center |
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| State / province | CHIHUAHUA |
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| Formation | Tmag |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 30 |
|
28.5 |
31.5 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SR87_SR86 | 0.7089 | | | MS |
| PB206_PB204 | 18.492 | | | MS |
| PB207_PB204 | 15.581 | | | MS |
| PB208_PB204 | 38.788 | | | MS |
References
- Luhr, James F; Aranda-Gomez, Jose J; Housh, Todd B (1995) San Quintin volcanic field, Baja California Norte, Mexico; geology, petrology, and geochemistry. Journal of Geophysical Research, B, Solid Earth and Planets, vol.100, no.6, pp.10,353-10,380, 10 Jun 1995 doi:10.1029/95JB00037
