Sample SQ48 WR

NavDat sample number 21092 · GRANODIORITE

Sample

Sample ID	SQ48 WR
Alternate ID	43
Rock name	GRANODIORITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS
Comment	of the Big Meadow pluton Ross 1958, about 0.4 km E of Heart Meadow Campground N of Big Meadow Creek

Location

Latitude	36.7233
Longitude	-118.807
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	17.2		PPM	MS-ID
U	6.22		PPM	MS-ID
TH	20.9		PPM	MS-ID
RB	45.1		PPM	MS-ID
SR	216.8		PPM	MS-ID
SR87_SR86	0.70765			MS-ID
PB206_PB204	19.428			MS-ID
PB207_PB204	15.647			MS-ID
PB208_PB204	39.066			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