Sample W5 WR

NavDat sample number 21050 · DIORITE

Sample

Sample ID	W5 WR
Alternate ID	5
Rock name	DIORITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS
Comment	Hwy. 180 E of Squaw Valley and 1.9 km W of Mill Creek bridge

Location

Latitude	36.7483
Longitude	-119.228
Location	Sierra Nevada Batholith
State / province	California

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
145		130.5	159.5

Analyses

Mineral

Item	Value	Std. dev.	Unit	Method
PB	9.91		PPM	MS-ID
U	0.96		PPM	MS-ID
TH	2.67		PPM	MS-ID
RB	28.76		PPM	MS-ID
SR	112.8		PPM	MS-ID
SR87_SR86	0.70732			MS-ID
PB206_PB204	18.665			MS-ID
PB207_PB204	15.574			MS-ID
PB208_PB204	38.347			MS-ID

References

Chen, J H; Tilton, G R (1991) Applications of lead and strontium isotopic relationships to the petrogenesis of granitoid rocks, central Sierra Nevada Batholith, California. Geological Society of America Bulletin, vol.103, no.4, pp.439-447, Apr 1991 doi:10.1130/0016-7606(1991)103<0439:AOLASI>2.3.CO;2