Sample PHA91607

NavDat sample number 43507 · ANDESITE

Sample

Sample ID	PHA91607
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS
Comment	Andesite of Member B

Location

Latitude	44.9381
Longitude	-120.405
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	58.17		WT%	XRF
AL2O3	13.93		WT%	XRF
TIO2	1.624		WT%	XRF
FEO	10.74		WT%	XRF
MNO	0.179		WT%	XRF
CAO	5.56		WT%	XRF
MGO	1.62		WT%	XRF
K2O	1.63		WT%	XRF
NA2O	3.71		WT%	XRF
P2O5	0.59		WT%	XRF
TOTAL	97.75		WT%	XRF
NI	3		PPM	XRF
CR	7		PPM	XRF
SC	31		PPM	XRF
V	98		PPM	XRF
BA	598		PPM	XRF
RB	82		PPM	XRF
SR	184		PPM	XRF
ZR	244		PPM	XRF
Y	57		PPM	XRF
NB	24.8		PPM	XRF
GA	26		PPM	XRF
TH	8		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