Sample 36

NavDat sample number 63227 · PYROCLASTIC-FLOW

Sample

Sample ID	36
Alternate ID	9-85-2A
Rock name	PYROCLASTIC-FLOW
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Collected by	W.A. Duffield, C.R. Bacon
Comment	unwelded, pumiceous ash flow tuff in the Coso area

Age (Ma)	Error	Min	Max	Geologic age	Dated by
0.9		0	1.8

Item	Value	Unit	Method
SIO2	77.04	WT%	EPMA
AL2O3	12.66	WT%	EPMA
FE2O3T	0.56	WT%	EPMA
MGO	0.02	WT%	EPMA
MNO	0.07	WT%	EPMA
CAO	0.74	WT%	EPMA
BAO	0	WT%	EPMA
TIO2	0.04	WT%	EPMA
NA2O	3.07	WT%	EPMA
K2O	5.79	WT%	EPMA
CL	0	WT%	EPMA
SC	2.48	PPM	NAA
MN	484	PPM	NAA
ZN	23	PPM	NAA
RB	228	PPM	NAA
CS	10.7	PPM	NAA
LA	6.2	PPM	NAA
CE	15.8	PPM	NAA
ND	7	PPM	NAA
SM	0.99	PPM	NAA
EU	0.99	PPM	NAA
TB	0.16	PPM	NAA
DY	1.34	PPM	NAA
YB	1.67	PPM	NAA
LU	0.26	PPM	NAA
HF	3.6	PPM	NAA
TA	1.59	PPM	NAA
TH	16.5	PPM	NAA
U	7.75	PPM	NAA