Sample MA2 WR

NavDat sample number 21116 · GRANODIORITE

Sample

Sample ID	MA2 WR
Alternate ID	67
Rock name	GRANODIORITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS
Comment	of Benton Range, Gaspipe Spring, 11 km SE Mono Lake, 0.4 km W of BM7974, Hwy. 120

Location

Latitude	37.8933
Longitude	-118.847
Location	Sierra Nevada Batholith
State / province	California

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
217		195.3	238.7

Analyses

Mineral

Item	Value	Std. dev.	Unit	Method
PB	11.1		PPM	MS-ID
U	2.04		PPM	MS-ID
TH	12.7		PPM	MS-ID
PB206_PB204	19.524			MS-ID
PB207_PB204	15.696			MS-ID
PB208_PB204	39.371			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