Sample W5 PL

NavDat sample number 21051 · DIORITE

Sample

Sample ID	W5 PL
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	1.93		PPM	MS-ID
U	0.058		PPM	MS-ID
TH	0.382		PPM	MS-ID
RB	20.22		PPM	MS-ID
SR	187		PPM	MS-ID
SR87_SR86	0.70614			MS-ID
PB206_PB204	18.721			MS-ID
PB207_PB204	15.609			MS-ID
PB208_PB204	38.512			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