Sample 93PS-U281

NavDat sample number 59858 · ANDESITE

Sample

Sample ID	93PS-U281
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.1606
Longitude	-122.602
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	62.35		WT%	XRF
TIO2	0.87		WT%	XRF
AL2O3	17.04		WT%	XRF
FEOT	5.04		WT%	XRF
MNO	0.08		WT%	XRF
MGO	3.18		WT%	XRF
CAO	6.17		WT%	XRF
NA2O	3.89		WT%	XRF
K2O	1.15		WT%	XRF
P2O5	0.22		WT%	XRF
TOTAL	99.85		WT%	XRF
LOI	1.61		WT%	XRF
BA	270		PPM	XRF
LA	-30		PPM	XRF
CE	61		PPM	XRF
RB	18		PPM	XRF
SR	485		PPM	XRF
Y	15		PPM	XRF
ZR	194		PPM	XRF
NB	12		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.