Sample PHA94055

NavDat sample number 43510 · TUFF

Sample

Sample ID	PHA94055
Rock name	TUFF
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	White Tuff at base of Member A

Location

Latitude	44.9206
Longitude	-120.453
State / province	Oregon
Formation	John Day Formation

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
40.95		39.2	42.7

Analyses

Whole Rock

Item	Value	Std. dev.	Unit	Method
SIO2	66.57		WT%	XRF
AL2O3	16.11		WT%	XRF
TIO2	0.2		WT%	XRF
FEO	2.47		WT%	XRF
MNO	0.09		WT%	XRF
CAO	3.63		WT%	XRF
MGO	2.33		WT%	XRF
K2O	0.88		WT%	XRF
NA2O	1		WT%	XRF
P2O5	0.035		WT%	XRF
TOTAL	93.32		WT%	XRF
NI	19		PPM	XRF
CR	1		PPM	XRF
SC	0		PPM	XRF
V	47		PPM	XRF
BA	1779		PPM	XRF
RB	15		PPM	XRF
SR	188		PPM	XRF
ZR	297		PPM	XRF
Y	90		PPM	XRF
NB	34.8		PPM	XRF
GA	30		PPM	XRF
TH	20		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