Sample 92PS-U142

NavDat sample number 59839 · ANDESITE

Sample

Sample ID	92PS-U142
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.195
Longitude	-122.524
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	59.53		WT%	XRF
TIO2	1.61		WT%	XRF
AL2O3	16.8		WT%	XRF
FEOT	6.89		WT%	XRF
MNO	0.16		WT%	XRF
MGO	2.38		WT%	XRF
CAO	5.6		WT%	XRF
NA2O	4.25		WT%	XRF
K2O	2.31		WT%	XRF
P2O5	0.47		WT%	XRF
TOTAL	99.41		WT%	XRF
LOI	1.4		WT%	XRF
BA	490		PPM	XRF
LA	-30		PPM	XRF
CE	79		PPM	XRF
RB	57		PPM	XRF
SR	320		PPM	XRF
Y	36		PPM	XRF
ZR	395		PPM	XRF
NB	25		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.