Sample 93-ER-A148

NavDat sample number 60023 · DACITE

Sample

Sample ID	93-ER-A148
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	breccia

Location

Latitude	46.3244
Longitude	-122.451
State / province	Oregon

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
34		30.6	37.4

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	64.41		WT%	XRF
TIO2	0.98		WT%	XRF
AL2O3	16.2		WT%	XRF
FEOT	4.5		WT%	XRF
MNO	0.18		WT%	XRF
MGO	1.24		WT%	XRF
CAO	6.62		WT%	XRF
NA2O	4.82		WT%	XRF
K2O	0.75		WT%	XRF
P2O5	0.29		WT%	XRF
TOTAL	99.73		WT%	XRF
LOI	1.74		WT%	XRF
BA	245		PPM	XRF
LA	-30		PPM	XRF
CE	46		PPM	XRF
RB	22		PPM	XRF
SR	460		PPM	XRF
Y	23		PPM	XRF
ZR	220		PPM	XRF
NB	14		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.