Analytical method: K-AR

Technique	K-AR
Material	WHOLE ROCK
Mineral	none
Institution	U.S. GEOLOGICAL SURVEY, DENVER, COLORADO 80225, USA
Reference	Obradovich, John D; Mutschler, Felix E; Bryant, Bruce Potassium-argon ages bearing on the igneous and tectonic history of the Elk mountains and vicinity, Colorado; a preliminary report. Geological Society of America Bulletin, vol.80, no.9, pp.1749-1756, 1969

Samples analysed with this method