Sample CG-45

NavDat sample number 12070 · ANDESITE

Sample

Sample ID	CG-45
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	45.5374
Longitude	-122.238
State / province	_NULL_

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
21		17	25

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	57.57		WT%	XRF
TIO2	0.99		WT%	XRF
AL2O3	18.22		WT%	XRF
FEOT	7.13		WT%	XRF
MNO	0.19		WT%	XRF
MGO	4.35		WT%	XRF
CAO	7.99		WT%	XRF
NA2O	2.01		WT%	XRF
K2O	1.35		WT%	XRF
P2O5	0.2		WT%	XRF
TOTAL	99.82		WT%	XRF

References

Tolan, Terry Leo (1982) The stratigraphic relationships of the Columbia River Basalt Group in the lower Columbia River Gorge of Oregon and Washington.