Sample 797-19G

NavDat sample number 13855

Sample

Sample ID	797-19G
Rock type	PLUTONIC
Material	IGNEOUS

Location

Latitude	45.5433
Longitude	-114.443
State / province	Montana
Volcanic field	Challis epizonal plutonics and volcanics

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
50		45	55

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
RB	251.1		PPM	XRF
SR	59.91		PPM	XRF
SR87_SR86	0.718			TIMS
D18O	9.8		PERMILL	MS
DELTA_D	-126			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