| Technique | UNKNOWN |
| Material | WHOLE ROCK |
| Mineral | none |
| Reference | Bonini, Jennifer A; Baldwin, Suzanne L (1998) Mesozoic metamorphic and middle to late Tertiary magmatic events on Magdalena and Santa Margarita islands, Baja California Sur, Mexico; implications for the tectonic evolution of the Baja California continental borderland. Geological Society of America Bulletin, vol.110, no.8, pp.1094-1104, Aug 1998 |