Sample PHA93615

NavDat sample number 43512 · TUFF

Sample

Sample ID	PHA93615
Rock name	TUFF
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	White Tuff in Upper Member A

Location

Latitude	44.9358
Longitude	-120.404
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	69.33		WT%	XRF
AL2O3	12.52		WT%	XRF
TIO2	0.167		WT%	XRF
FEO	1.18		WT%	XRF
MNO	0.023		WT%	XRF
CAO	2.18		WT%	XRF
MGO	0.6		WT%	XRF
K2O	4.24		WT%	XRF
NA2O	1.38		WT%	XRF
P2O5	0.034		WT%	XRF
TOTAL	91.65		WT%	XRF
NI	12		PPM	XRF
CR	6		PPM	XRF
SC	6		PPM	XRF
V	0		PPM	XRF
BA	1787		PPM	XRF
RB	90		PPM	XRF
SR	614		PPM	XRF
ZR	219		PPM	XRF
Y	75		PPM	XRF
NB	27.3		PPM	XRF
GA	24		PPM	XRF
TH	13		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