Sample 92PS-U157B

NavDat sample number 59701 · ANDESITE

Sample

Sample ID	92PS-U157B
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.094
Longitude	-122.557
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	57.75		WT%	XRF
TIO2	1.38		WT%	XRF
AL2O3	17.44		WT%	XRF
FEOT	7.48		WT%	XRF
MNO	0.13		WT%	XRF
MGO	3.31		WT%	XRF
CAO	6.79		WT%	XRF
NA2O	4.22		WT%	XRF
K2O	1.01		WT%	XRF
P2O5	0.49		WT%	XRF
TOTAL	99.8		WT%	XRF
LOI	1.49		WT%	XRF
BA	225		PPM	XRF
LA	-30		PPM	XRF
CE	53		PPM	XRF
RB	12		PPM	XRF
SR	450		PPM	XRF
Y	19		PPM	XRF
ZR	255		PPM	XRF
NB	22		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.