Analytical method: UNKNOWN

Technique	UNKNOWN
Material	WHOLE ROCK
Mineral	none
Institution	Unknown, Unknown, USA
Reference	Espindola, J M; Macias, J L; Tilling, R I; Sheridan, M F (2000) Volcanic history of El Chichon Volcano Chiapas, Mexico during the Holocene, and its impact on human activity. Bulletin of Volcanology. 62; 2, Pages 90-104. 2000.

Samples analysed with this method