Analytical method: EPMA
| Technique | EPMA |
|---|---|
| Material | WHOLE ROCK |
| Mineral | none |
| Comment | analyses done on ground mass |
| Institution | STANFORD UNIVERSITY, DEPARTMENT OF GEOPHYSICS, STANFORD, CA 94305-2215, USA |
| Reference | Fridrich, Christopher John (1987) The Grizzly Peak Cauldron, Colorado; structure and petrology of a deeply dissected resurgent ash-flow caldera. |