Sample 93TO-B74

NavDat sample number 59983 · ANDESITE

Sample

Sample ID	93TO-B74
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.3597
Longitude	-122.588
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	57.27		WT%	XRF
TIO2	1.24		WT%	XRF
AL2O3	18.68		WT%	XRF
FEOT	6.51		WT%	XRF
MNO	0.09		WT%	XRF
MGO	2.98		WT%	XRF
CAO	7.83		WT%	XRF
NA2O	3.88		WT%	XRF
K2O	1.26		WT%	XRF
P2O5	0.27		WT%	XRF
TOTAL	99.99		WT%	XRF
LOI	1.32		WT%	XRF
BA	270		PPM	XRF
LA	-30		PPM	XRF
CE	55		PPM	XRF
RB	29		PPM	XRF
SR	470		PPM	XRF
Y	23		PPM	XRF
ZR	196		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.