Sample FR1b(2)

NavDat sample number 130771 · GRANOPHYRE

Sample

Sample ID	FR1b(2)
Rock name	GRANOPHYRE
Material	METAMORPHIC
Collected by	Saleeby and others
Comment	Partially recrystallized quartz-albite granophyre

Location

Latitude	40.0117
Longitude	-121.165
State / province	California

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
257		231.3	282.7

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
PB206_PB204	153.8			MS
ND143_ND144	0.512272			MS
SR87_SR86	0.704215			MS
U	0.1583		PPM	MS-ID
PB	0.00484		PPM	MS-ID
SR	0.04541		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