Sample 133M

NavDat sample number 37958 · DACITE

Sample

Sample ID	133M
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	p (age code)

Location

Latitude	41.6
Longitude	-121.7
Location	Medicine Lake Volcano
State / province	California

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
0.83		0.01	1.64	Pleistocene

Analyses

WHOLE ROCK, MINERAL

Item	Value	Std. dev.	Unit	Method
D18O	5.7		PERMILL	MS
SIO2	69.7		WT%	XRF

References

Adami, L. H.; Hildreth, W. H.; Donnelly-Nolan, J. M. (1996) Oxygen isotope analyses of 166 rock samples from Medicine Lake Volcano, California. Open-File Report - U. S. Geological Survey. 1996.