| Technique | INAA |
| Material | WHOLE ROCK |
| Mineral | none |
| Reference | Hammersley, L; DePaolo, Donald J (2006) Isotopic and geophysical constraints on the structure and evolution of the Clear Lake volcanic system. Journal of Volcanology and Geothermal Research, vol.153, no.3-4, pp.331-356, 15 May 2006 |