Sample 99LC-Q428

NavDat sample number 48328 · BASALTIC-ANDESITE

Sample

Sample ID	99LC-Q428
Rock name	BASALTIC-ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.8603
Longitude	-122.623
State / province	Washington

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	54.86		WT%	XRF
TIO2	1.76		WT%	XRF
AL2O3	16.42		WT%	XRF
FEOT	8.81		WT%	XRF
MNO	0.16		WT%	XRF
MGO	4.53		WT%	XRF
CAO	8.58		WT%	XRF
NA2O	3.45		WT%	XRF
K2O	1.07		WT%	XRF
P2O5	0.35		WT%	XRF
TOTAL	99.68		WT%	XRF
BA	237		PPM	XRF
LA	44		PPM	XRF
CE	60		PPM	XRF
RB	13		PPM	XRF
SR	335		PPM	XRF
Y	32		PPM	XRF
ZR	209		PPM	XRF
NB	15		PPM	XRF

References

Evarts, Russell C; Dinterman-Philip (compiler); Block-Jessica (compiler) (2004) Geologic map of the Ridgefield Quadrangle, Clark and Cowlitz Counties, Washington. Scientific Investigations Map. 2004.