Sample W21 WR

NavDat sample number 21049 · GABBRO

Sample

Sample ID	W21 WR
Alternate ID	4
Rock name	GABBRO
Rock type	PLUTONIC
Composition	MAFIC
Material	IGNEOUS
Comment	Pine Flat road, 1 km N of Hwy. 180

Location

Latitude	36.7583
Longitude	-119.238
Location	Sierra Nevada Batholith
State / province	California

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
100		90	110

Analyses

Mineral

Item	Value	Std. dev.	Unit	Method
PB	2.81		PPM	MS-ID
U	0.23		PPM	MS-ID
TH	0.84		PPM	MS-ID
RB	7.1		PPM	MS-ID
SR	481.1		PPM	MS-ID
SR87_SR86	0.70462			MS-ID
PB206_PB204	18.822			MS-ID
PB207_PB204	15.599			MS-ID
PB208_PB204	38.472			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