Sample 89-058

NavDat sample number 22289 · BASALTIC-ANDESITE

Sample

Sample ID	89-058
Rock name	BASALTIC-ANDESITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	46.4253
Longitude	-121.803
State / province	Washington

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
26		19	33

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	55.96		WT%	XRF
TIO2	1.73		WT%	XRF
AL2O3	15.77		WT%	XRF
FEO	10.7		WT%	XRF
MNO	0.19		WT%	XRF
MGO	3.25		WT%	XRF
CAO	7.34		WT%	XRF
NA2O	3.89		WT%	XRF
K2O	0.89		WT%	XRF
P2O5	0.28		WT%	XRF

References

Swanson, Donald A (1991) Geologic map of the Tower Rock Quadrangle, southern Cascade Range, Washington. Open-File Report - U. S. Geological Survey. 1991.