Analytical method: UNKNOWN
| Technique | UNKNOWN |
|---|---|
| Material | WHOLE ROCK |
| Mineral | none |
| Institution | Personal Communication |
| Reference | Edwards, George; McLaughlin, William A (1972) Shell list No. 1; K/Ar and Rb/Sr Age Determinations of California, Nevada and Utah rocks and minerals. Isochron/West, vol.3, pp.1-7, 1972 |