Sample W4 WR

NavDat sample number 21052 · DIORITE

Sample

Sample ID	W4 WR
Alternate ID	6
Rock name	DIORITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS
Comment	Hwy. 180, 3.2 km N of Dunlap

Location

Latitude	36.77
Longitude	-119.12
Location	Sierra Nevada Batholith
State / province	California

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
111		99.9	122.1

Analyses

Mineral

Item	Value	Std. dev.	Unit	Method
PB	13.8		PPM	MS-ID
U	3		PPM	MS-ID
TH	10		PPM	MS-ID
PB206_PB204	19.12			MS-ID
PB207_PB204	15.588			MS-ID
PB208_PB204	38.698			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