Analytical method: RAPID_ROCK
| Technique | RAPID_ROCK |
|---|---|
| Material | WHOLE ROCK |
| Mineral | none |
| Institution | USGS DENVER, DENVER, CO, USA |
| Reference | Hoblitt, R P; Crandell, D R; Mullineaux, D R (1980) Mount St. Helens eruptive behavior during the past 1,500 yr. Geology Boulder. 8; 11, Pages 555-559. 1980. |