Sample SC2a(2)

NavDat sample number 130743 · GRANOPHYRE

Sample

Sample ID	SC2a(2)
Rock name	GRANOPHYRE
Rock type	VOLCANIC
Material	IGNEOUS
Collected by	Saleeby and others
Comment	Quartz-albite granophyre screen

Location

Latitude	39.3617
Longitude	-121.317
State / province	California

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
161		144.9	177.1

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
PB206_PB204	5425			MS
ND143_ND144	0.512297			MS
SR87_SR86	0.703083			MS
U	0.0201		PPM	MS-ID
PB	0.00044		PPM	MS-ID
SR	0.02085		PPM	MS-ID

References

Saleeby, Jason B; Shaw, H F; Niemeyer, S; Moores, E M; Edelman, S H (1989) U/Pb, Sm/Nd and Rb/Sr geochronological and isotopic study of northernSierra Nevada ophiolitic assemblages, California. Contributions to Mineralogy and Petrology, vol.102, no.2, pp.205-220,1989 doi:10.1007/BF00375341