Sample 93PS-U287

NavDat sample number 59859 · ANDESITE

Sample

Sample ID	93PS-U287
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.1514
Longitude	-122.605
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	62.86		WT%	XRF
TIO2	1.07		WT%	XRF
AL2O3	17.1		WT%	XRF
FEOT	5.59		WT%	XRF
MNO	0.1		WT%	XRF
MGO	1.97		WT%	XRF
CAO	5.05		WT%	XRF
NA2O	4.47		WT%	XRF
K2O	1.45		WT%	XRF
P2O5	0.34		WT%	XRF
TOTAL	99.4		WT%	XRF
LOI	1.42		WT%	XRF
BA	335		PPM	XRF
LA	-30		PPM	XRF
CE	56		PPM	XRF
RB	30		PPM	XRF
SR	360		PPM	XRF
Y	24		PPM	XRF
ZR	275		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.