Sample 93-TO-A10A

NavDat sample number 59990 · DACITE

Sample

Sample ID	93-TO-A10A
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	breccia

Location

Latitude	46.2681
Longitude	-122.508
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
36		32.4	39.6

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	69.42		WT%	XRF
TIO2	0.65		WT%	XRF
AL2O3	14.91		WT%	XRF
FEOT	3.92		WT%	XRF
MNO	0.07		WT%	XRF
MGO	1.23		WT%	XRF
CAO	3.49		WT%	XRF
NA2O	3.61		WT%	XRF
K2O	2.52		WT%	XRF
P2O5	0.17		WT%	XRF
TOTAL	99.55		WT%	XRF
LOI	1.17		WT%	XRF
BA	590		PPM	XRF
LA	39		PPM	XRF
CE	39		PPM	XRF
RB	42		PPM	XRF
SR	370		PPM	XRF
Y	16		PPM	XRF
ZR	178		PPM	XRF
NB	17		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.