Sample 92PS-U220

NavDat sample number 59842 · BASALTIC-ANDESITE

Sample

Sample ID	92PS-U220
Rock name	BASALTIC-ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.2197
Longitude	-122.621
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	54.36		WT%	XRF
TIO2	1.6		WT%	XRF
AL2O3	16.52		WT%	XRF
FEOT	10		WT%	XRF
MNO	0.16		WT%	XRF
MGO	4.36		WT%	XRF
CAO	8.54		WT%	XRF
NA2O	3.55		WT%	XRF
K2O	0.66		WT%	XRF
P2O5	0.24		WT%	XRF
TOTAL	99.78		WT%	XRF
LOI	0.64		WT%	XRF
BA	170		PPM	XRF
LA	-30		PPM	XRF
CE	-30		PPM	XRF
RB	18		PPM	XRF
SR	400		PPM	XRF
Y	23		PPM	XRF
ZR	134		PPM	XRF
NB	10		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.