Sample 68M15 WR

NavDat sample number 21100 · GRANODIORITE

Sample

Sample ID	68M15 WR
Alternate ID	48
Rock name	GRANODIORITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS
Comment	of Sugarloaf, 3.2 km S of Roaring River Falls Moore 1978

Location

Latitude	36.7533
Longitude	-118.613
Location	Sierra Nevada Batholith
State / province	California

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
88		79.2	96.8

Analyses

Mineral

Item	Value	Std. dev.	Unit	Method
PB	12.2		PPM	MS-ID
U	7.25		PPM	MS-ID
TH	27.4		PPM	MS-ID
PB206_PB204	19.375			MS-ID
PB207_PB204	15.644			MS-ID
PB208_PB204	39.365			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