← Search
Sample D-1
NavDat sample number 7159 · DACITE
Sample
| Sample ID | D-1 |
|---|
| Rock name | DACITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
| Collected by | H.F. Bonham, Nevada Bureau of Mines and Geology, and M.L. Silberman, U.S. Geological Survey. |
|---|
| Comment | Porphyritic biotite-hornblende dacite or andesite, Divide Andesite. Plagioclase is vermicular; the biotite and hornblende ages are believed to be near to the age of emplacement. |
|---|
Location
| Latitude | 37.9872 |
|---|
| Longitude | -117.167 |
|---|
| Location | Esmeralda Co., NV |
|---|
| State / province | Nevada |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 17 |
|
16.2 |
17.8 |
|
M.L. Silberman, U.S. Geological Survey. |
Analyses
No chemical analyses are stored for this sample.
