Sample 92PS-U202

NavDat sample number 59840 · ANDESITE

Sample

Sample ID	92PS-U202
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.2219
Longitude	-122.554
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	58.18		WT%	XRF
TIO2	1.07		WT%	XRF
AL2O3	19.36		WT%	XRF
FEOT	5.82		WT%	XRF
MNO	0.11		WT%	XRF
MGO	2.7		WT%	XRF
CAO	7.19		WT%	XRF
NA2O	4.44		WT%	XRF
K2O	0.88		WT%	XRF
P2O5	0.25		WT%	XRF
TOTAL	99.36		WT%	XRF
LOI	0.93		WT%	XRF
BA	205		PPM	XRF
LA	-30		PPM	XRF
CE	43		PPM	XRF
RB	16		PPM	XRF
SR	480		PPM	XRF
Y	21		PPM	XRF
ZR	178		PPM	XRF
NB	-10		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.