Sample K-18-64

NavDat sample number 32575 · GRANITE

Sample

Sample ID	K-18-64
Rock name	GRANITE
Rock type	PLUTONIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	37.885
Longitude	-119.833
Location	Yosemite Valley
State / province	California
Pluton	El Capitan Granite - Double Rock pluton

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	71.8		WT%	RAPID_ROCK
TIO2	0.33		WT%	RAPID_ROCK
AL2O3	14.2		WT%	RAPID_ROCK
FE2O3	0.94		WT%	RAPID_ROCK
FEO	1.6		WT%	RAPID_ROCK
MNO	0.03		WT%	RAPID_ROCK
MGO	0.59		WT%	RAPID_ROCK
CAO	1.7		WT%	RAPID_ROCK
NA2O	3		WT%	RAPID_ROCK
K2O	4.7		WT%	RAPID_ROCK
P2O5	0.08		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