Sample 797-19E

NavDat sample number 13853

Sample

Sample ID	797-19E
Rock type	VOLCANIC
Material	IGNEOUS

Location

Latitude	45.5417
Longitude	-114.413
State / province	Montana
Volcanic field	Challis epizonal plutonics and volcanics

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
34		33.3	34.7

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
RB	31.27		PPM	XRF
SR	135.9		PPM	XRF
SR87_SR86	0.72124			TIMS
D18O	6.3		PERMILL	MS
DELTA_D	-145			MS

References

Criss, Robert E; Fleck, Robert J (1987) Petrogenesis, geochronology, and hydrothermal systems of the northern Idaho Batholith and adjacent areas based on (super 18?O/ (super 16?O, D/H, (super 87?Sr/ (super 86?Sr, K-Ar, and (super 40?Ar/ (super 39?Ar studies. U. S. Geological Survey Professional Paper, Report: P 1436, pp.95-137, 1987