Sample 92TO-B11

NavDat sample number 59949 · ANDESITE

Sample

Sample ID	92TO-B11
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.3178
Longitude	-122.667
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
36		32.4	39.6

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	57.26		WT%	XRF
TIO2	1.52		WT%	XRF
AL2O3	16.43		WT%	XRF
FEOT	8.45		WT%	XRF
MNO	0.16		WT%	XRF
MGO	3.76		WT%	XRF
CAO	7.48		WT%	XRF
NA2O	3.95		WT%	XRF
K2O	0.69		WT%	XRF
P2O5	0.3		WT%	XRF
TOTAL	99.61		WT%	XRF
LOI	0.71		WT%	XRF
BA	275		PPM	XRF
LA	-30		PPM	XRF
CE	48		PPM	XRF
RB	21		PPM	XRF
SR	370		PPM	XRF
Y	29		PPM	XRF
ZR	196		PPM	XRF
NB	15		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.