Sample 93PS-U320

NavDat sample number 59728 · ANDESITE

Sample

Sample ID	93PS-U320
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.1583
Longitude	-122.506
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	62.95		WT%	XRF
TIO2	0.85		WT%	XRF
AL2O3	17.06		WT%	XRF
FEOT	5.32		WT%	XRF
MNO	0.08		WT%	XRF
MGO	2.71		WT%	XRF
CAO	5.83		WT%	XRF
NA2O	3.9		WT%	XRF
K2O	1.1		WT%	XRF
P2O5	0.22		WT%	XRF
TOTAL	99.09		WT%	XRF
LOI	2		WT%	XRF
BA	255		PPM	XRF
LA	-30		PPM	XRF
CE	32		PPM	XRF
RB	15		PPM	XRF
SR	420		PPM	XRF
Y	13		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.