Sample 92PS-U122

NavDat sample number 59837 · ANDESITE

Sample

Sample ID	92PS-U122
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.175
Longitude	-122.56
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
37		33.3	40.7

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	58.72		WT%	XRF
TIO2	1.08		WT%	XRF
AL2O3	17.32		WT%	XRF
FEOT	6.62		WT%	XRF
MNO	0.1		WT%	XRF
MGO	4.2		WT%	XRF
CAO	6.71		WT%	XRF
NA2O	4.02		WT%	XRF
K2O	0.97		WT%	XRF
P2O5	0.26		WT%	XRF
TOTAL	99.36		WT%	XRF
LOI	1.45		WT%	XRF
BA	215		PPM	XRF
LA	-30		PPM	XRF
CE	33		PPM	XRF
RB	15		PPM	XRF
SR	490		PPM	XRF
Y	16		PPM	XRF
ZR	196		PPM	XRF
NB	11		PPM	XRF

References

du, Bray Edward A; John, David A; Sherrod, David R; Evarts, Russell C; Conrey, Richard M; Lexa, Jaroslav (2006) Geochemical database for volcanic rocks of the western Cascades, Washington, Oregon, and California. U. S. Geological Survey Data Series. 2006.