← Search
Sample S92-H273
NavDat sample number 37034 · ANDESITE
Sample
| Sample ID | S92-H273 |
|---|
| Rock name | ANDESITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
| Comment | Outcrop of thick lava flow exposed in headwall 200 m NW of Boulder Lake. Normal-polarity. Seriate plagioclase-rich, two-yroxene andesite with rare olivine surrounded by fine-grained opaque minerals and pyroxene; groundmass is holocrystalline with traces of oxidation. |
|---|
Location
| Latitude | 45.2592 |
|---|
| Longitude | -121.57 |
|---|
| State / province | Oregon |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 1.71 |
|
1.63 |
1.79 |
|
|
Analyses
No chemical analyses are stored for this sample.
