← Search
Sample 91-170
NavDat sample number 36187 · PYROCLASTIC-FALL
Sample
| Sample ID | 91-170 |
|---|
| Rock name | PYROCLASTIC-FALL |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
| Comment | from volcanics rocks at Hall Creek in Sage Creek Basin; contains rounded pumice fragments and scattered broken crystals of qtz, feldspar, and bio; interstitial spaces filled with calcite cement, which also appears to have replaced some of the glassy matrix |
|---|
Location
| Latitude | 44.7722 |
|---|
| Longitude | -112.622 |
|---|
| State / province | Montana |
|---|
| Volcanic field | Challis Volcanic Group |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 45.54 |
|
45.43 |
45.65 |
|
|
Analyses
No chemical analyses are stored for this sample.
