Sample 92PS-U277

NavDat sample number 59857 · ANDESITE

Sample

Sample ID	92PS-U277
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.1758
Longitude	-122.547
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	59.01		WT%	XRF
TIO2	1.62		WT%	XRF
AL2O3	16.4		WT%	XRF
FEOT	7.73		WT%	XRF
MNO	0.15		WT%	XRF
MGO	2.56		WT%	XRF
CAO	6.3		WT%	XRF
NA2O	4.26		WT%	XRF
K2O	1.42		WT%	XRF
P2O5	0.53		WT%	XRF
TOTAL	99.06		WT%	XRF
LOI	1.3		WT%	XRF
BA	460		PPM	XRF
LA	36		PPM	XRF
CE	81		PPM	XRF
RB	40		PPM	XRF
SR	360		PPM	XRF
Y	38		PPM	XRF
ZR	305		PPM	XRF
NB	22		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.