Sample PHA95610

NavDat sample number 43513 · TUFF

Sample

Sample ID	PHA95610
Rock name	TUFF
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	White Tuff of Member F

Location

Latitude	44.9375
Longitude	-120.416
State / province	Oregon
Formation	John Day Formation

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
35.9		33.6	38.2

Analyses

Whole Rock

Item	Value	Std. dev.	Unit	Method
SIO2	71.43		WT%	XRF
AL2O3	11.34		WT%	XRF
TIO2	0.14		WT%	XRF
FEO	0.7		WT%	XRF
MNO	0.024		WT%	XRF
CAO	2.43		WT%	XRF
MGO	0.07		WT%	XRF
K2O	1.22		WT%	XRF
NA2O	2.49		WT%	XRF
P2O5	0.02		WT%	XRF
TOTAL	89.86		WT%	XRF
NI	10		PPM	XRF
CR	0		PPM	XRF
SC	6		PPM	XRF
V	18		PPM	XRF
BA	3940		PPM	XRF
RB	26		PPM	XRF
SR	1174		PPM	XRF
ZR	275		PPM	XRF
Y	50		PPM	XRF
NB	17.1		PPM	XRF
GA	18		PPM	XRF
TH	16		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