Sample 90CG-A220

NavDat sample number 59890 · BASALTIC-ANDESITE

Sample

Sample ID	90CG-A220
Rock name	BASALTIC-ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.2125
Longitude	-122.37
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
34		30.6	37.4

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	56.65		WT%	XRF
TIO2	1.16		WT%	XRF
AL2O3	16.27		WT%	XRF
FEOT	8		WT%	XRF
MNO	0.14		WT%	XRF
MGO	5.04		WT%	XRF
CAO	8.01		WT%	XRF
NA2O	3.36		WT%	XRF
K2O	1.12		WT%	XRF
P2O5	0.24		WT%	XRF
TOTAL	100.39		WT%	XRF
LOI	1.61		WT%	XRF
BA	235		PPM	XRF
LA	-30		PPM	XRF
CE	46		PPM	XRF
RB	25		PPM	XRF
SR	370		PPM	XRF
Y	31		PPM	XRF
ZR	200		PPM	XRF
NB	19		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.