Analytical method: EPMA
| Technique | EPMA |
|---|---|
| Material | WHOLE ROCK |
| Mineral | none |
| Institution | STANFORD UNIVERSITY, DEPARTMENT OF GEOPHYSICS, STANFORD, CA 94305-2215, USA |
| Reference | Loomis, Karen B (1992) New K-Ar ages from tuffs in the Etchegoin Formation, San Joaquin Basin, California. Isochron/West, vol.58, pp.3-7, Mar 1992 |