Sample SQ12 KF

NavDat sample number 21091 · GRANODIORITE

Sample

Sample ID	SQ12 KF
Alternate ID	42
Rock name	GRANODIORITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS
Comment	of the Big Meadow pluton Ross 1958, Hwy. 198, near Stoney Creek Campground, 0.4 km W of Stony Creek

Location

Latitude	36.6667
Longitude	-118.835
Location	Sierra Nevada Batholith
State / province	California

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
98		88.2	107.8

Analyses

Mineral

Item	Value	Std. dev.	Unit	Method
PB	17.5		PPM	MS-ID
U	0.15		PPM	MS-ID
TH	0.17		PPM	MS-ID
PB206_PB204	19.184			MS-ID
PB207_PB204	15.684			MS-ID
PB208_PB204	38.909			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