Sample Y-721

NavDat sample number 32592 · GRANITE

Sample

Sample ID	Y-721
Rock name	GRANITE
Rock type	PLUTONIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	37.565
Longitude	-119.617
Location	Yosemite Valley
State / province	California
Pluton	El Capitan Granite

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
102		91.8	112.2

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	73.7		WT%	RAPID_ROCK
TIO2	0.26		WT%	RAPID_ROCK
AL2O3	14.1		WT%	RAPID_ROCK
FE2O3	0.68		WT%	RAPID_ROCK
FEO	1.2		WT%	RAPID_ROCK
MNO	0.03		WT%	RAPID_ROCK
MGO	0.68		WT%	RAPID_ROCK
CAO	2.1		WT%	RAPID_ROCK
NA2O	3.7		WT%	RAPID_ROCK
K2O	3.2		WT%	RAPID_ROCK
P2O5	0.12		WT%	RAPID_ROCK

References

Bateman, Paul C; Dodge, Franklin C W; Bruggman, Peggy E (1984) Major oxide analyses, CIPW norms, modes, and bulk specific gravities of plutonic rocks from the Mariposa 1 degrees by 2 degrees sheet, central Sierra Nevada, California. Open-File Report - U. S. Geological Survey, Report: OF 84-0162, 59 pp., 1984