| Technique | SPEC |
|---|
| Material | WHOLE ROCK |
|---|
| Mineral | none |
|---|
| Reference | Banks, N G; Dockter, R D; Silberman, M L; Naeser, C W (1978) Radiometric ages of some Cretaceous and Tertiary volcanic and intrusive rocks in South-central Arizona. Journal of Research of the U. S. Geological Survey, vol.6, no.4, pp.439-445, Aug 1978 |
|---|
