Analytical method: INAA
| Technique | INAA |
|---|---|
| Material | WHOLE ROCK |
| Mineral | none |
| Reference | Ratte, James C; Steven, Thomas A (1967) Ash flows and related volcanic rocks associated with the Creede Caldera, San Juan Mountains, Colorado. U. S. Geological Survey Professional Paper. Pages H1-H58. 1967. |