Analytical method: UNKNOWN

Technique	UNKNOWN
Material	WHOLE ROCK
Mineral	none
Institution	Unknown, Unknown, USA
Reference	Garcia, Palomo A; Macias, J L; Tolson, G; Valdez, G; Mora, J C (2002) Volcanic stratigraphy and geological evolution of the Apan region, east-central sector of the Trans-Mexican volcanic belt. Geofisica Internacional. 41; 2, Pages 133-150. 2002.

Samples analysed with this method