Sample 93-ER-A195A

NavDat sample number 60026 · DACITE

Sample

Sample ID	93-ER-A195A
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	breccia

Location

Latitude	46.3339
Longitude	-122.469
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	64.2		WT%	XRF
TIO2	0.88		WT%	XRF
AL2O3	16.56		WT%	XRF
FEOT	4.62		WT%	XRF
MNO	0.09		WT%	XRF
MGO	1.29		WT%	XRF
CAO	4.71		WT%	XRF
NA2O	4.9		WT%	XRF
K2O	2.5		WT%	XRF
P2O5	0.25		WT%	XRF
TOTAL	99.31		WT%	XRF
LOI	1.61		WT%	XRF
BA	245		PPM	XRF
LA	-30		PPM	XRF
CE	31		PPM	XRF
RB	30		PPM	XRF
SR	405		PPM	XRF
Y	22		PPM	XRF
ZR	215		PPM	XRF
NB	11		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.