Sample PHA93614

NavDat sample number 43508 · ANDESITE

Sample

Sample ID	PHA93614
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS
Comment	Dike to Andesite of Member B

Location

Latitude	44.9311
Longitude	-120.41
State / province	Oregon
Formation	John Day Formation

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
38.7		38.2	39.2

Analyses

Whole Rock

Item	Value	Std. dev.	Unit	Method
SIO2	55.01		WT%	XRF
AL2O3	14.17		WT%	XRF
TIO2	2.369		WT%	XRF
FEO	11.38		WT%	XRF
MNO	0.186		WT%	XRF
CAO	6.65		WT%	XRF
MGO	2.77		WT%	XRF
K2O	0.82		WT%	XRF
NA2O	3.87		WT%	XRF
P2O5	0.511		WT%	XRF
TOTAL	97.74		WT%	XRF
NI	9		PPM	XRF
CR	21		PPM	XRF
SC	37		PPM	XRF
V	199		PPM	XRF
BA	455		PPM	XRF
RB	60		PPM	XRF
SR	195		PPM	XRF
ZR	233		PPM	XRF
Y	53		PPM	XRF
NB	23.5		PPM	XRF
GA	24		PPM	XRF
TH	6		PPM	XRF

References

Bestland, E A; Hammond, P E; Blackwell, D L S; Keys, M A; Retallack, GJ; Stimac, J (2002) Geologic framework of the Clarno Unit, John Day Fossil Beds NationalMonument, central Oregon. Open File Report - State of Oregon, Department of Geology and MineralIndustries, Report: O-02-03, 1 disc, 2002