Sample 93PS-U310

NavDat sample number 59862 · ANDESITE

Sample

Sample ID	93PS-U310
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.1278
Longitude	-122.615
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	57.34		WT%	XRF
TIO2	1.73		WT%	XRF
AL2O3	16.22		WT%	XRF
FEOT	8.49		WT%	XRF
MNO	0.17		WT%	XRF
MGO	3.47		WT%	XRF
CAO	7.53		WT%	XRF
NA2O	3.94		WT%	XRF
K2O	0.58		WT%	XRF
P2O5	0.54		WT%	XRF
TOTAL	99.79		WT%	XRF
LOI	2.7		WT%	XRF
BA	325		PPM	XRF
LA	32		PPM	XRF
CE	90		PPM	XRF
RB	28		PPM	XRF
SR	540		PPM	XRF
Y	35		PPM	XRF
ZR	280		PPM	XRF
NB	21		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.