Sample 92PS-U140B

NavDat sample number 59838 · ANDESITE

Sample

Sample ID	92PS-U140B
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.1942
Longitude	-122.506
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	60.53		WT%	XRF
TIO2	0.99		WT%	XRF
AL2O3	16.87		WT%	XRF
FEOT	6.2		WT%	XRF
MNO	0.11		WT%	XRF
MGO	3.69		WT%	XRF
CAO	6.07		WT%	XRF
NA2O	3.76		WT%	XRF
K2O	1.5		WT%	XRF
P2O5	0.27		WT%	XRF
TOTAL	98.97		WT%	XRF
LOI	2		WT%	XRF
BA	325		PPM	XRF
LA	-30		PPM	XRF
CE	52		PPM	XRF
RB	35		PPM	XRF
SR	355		PPM	XRF
Y	21		PPM	XRF
ZR	210		PPM	XRF
NB	15		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.